Absorption Chillers
www.AbsorptionChillers.com

Absorption Chillers &  Adsorption Chillers  For  Cogeneration,  Trigeneration 
Demand Side Management,  Solar Trigeneration  &  Waste Heat Recovery Applications

What Is An Absorption Chiller and How Does It Work?

Absorption chillers use heat instead of mechanical energy to provide cooling. A thermal compressor consists of an absorber, a generator, a pump, and a throttling device, and replaces the mechanical vapor compressor.

In the chiller, refrigerant vapor from the evaporator is absorbed by a solution mixture in the absorber. This solution is then pumped to the generator. There the refrigerant re-vaporizes using a waste steam heat source. The refrigerant-depleted solution then returns to the absorber via a throttling device. The two most common refrigerant/ absorbent mixtures used in absorption chillers are water/lithium bromide and ammonia/water.

Compared with mechanical chillers, absorption chillers have a low coefficient of performance (COP = chiller load/heat input). However, absorption chillers can substantially reduce operating costs because they are powered by low-grade waste heat. Vapor compression chillers, by contrast, must be motor- or engine-driven.

Low-pressure, steam-driven absorption chillers are available in capacities ranging from 100 to 1,500 tons. Absorption chillers come in two commercially available designs: single-effect and double-effect. Single-effect machines provide a thermal COP of 0.7 and require about 18 pounds of 15-pound-per-square-inch-gauge (psig) steam per ton-hour of cooling.

Double-effect machines are about 40% more efficient, but require a higher grade of thermal input, using about 10 pounds of 100- to 150-psig steam per ton-hour.

A single-effect absorption machine means all condensing heat cools and condenses in the condenser. From there it is released to the cooling water. A double-effect machine adopts a higher heat efficiency of condensation and divides the generator into a high-temperature and a low-temperature generator.

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Clean Power Generation Solutions

Our "Integrated" CHP Systems (Cogeneration and Trigeneration) Plants 
Have Very  High Efficiencies, Low Fuel Costs & Low Emissions

The Effective Heat Rate is Approximately 
4100 btu/kW & System Efficiency is 92% Plant.

The CHP System below is Rated at 900 kW and Features:
(2) Natural Gas Engines @ 450 kW each on one Skid with Optional 
Selective Catalytic Reduction system that removes Nitrogen Oxides to "non-detect."

Our CHP Systems may be the best solution for your company's economic and environmental sustainability as we "upgrade" natural gas to clean power with our clean power generation solutions.

Our Emissions Abatement solutions reduce Nitrogen Oxides to "non-detect" which means our Trigeneration energy systems can be installed and operated in most EPA non-attainment regions!

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History of the Brayton Cycle,  Carnot Cycle,  Cheng Cycle,
Graz Cycle,  Kalina Cycle, Organic Rankine Cycle,  Rankine Cycle 
and Waste Heat Recovery

What is the Brayton Cycle?

Gas turbines operate on the principal of the Brayton Cycle, which is defined as a constant pressure cycle, with four basic operations which it accomplishes simultaneously and continuously for an uninterrupted flow of power.

Background Information and History of Rudolph Diesel and Sadi Carnot

Rudolph Diesel was educated at the predecessor school to the Technical University of Munich, Germany. In 1878, he was introduced to the work of Sadi Carnot, who theorized that an engine could achieve much higher efficiency than the steam engines of the day. Carnot envisioned a cycle in which a gas is compressed, heated, allowed to expand, and then cooled. After the gas is cooled, the cycle begins anew. Mechanical energy is used to compress the gas and thermal energy to heat it. In turn, expansion of the gas yields mechanical energy, and its cooling yields thermal energy. The net result is conversion of thermal energy to mechanical energy.

Diesel sought to apply Carnot’s theory to the internal combustion engine. The efficiency of the Carnot Cycle increases with the compression ratio—the ratio of gas volume at full expansion to its volume at full compression. Nicklaus Otto invented an internal combustion engine in 1876 that was the predecessor to the modern gasoline engine. Otto’s engine mixed fuel and air before their introduction to the cylinder, and a flame or spark was used to ignite the fuel-air mixture at the appropriate time. However, air gets hotter as it is compressed, and if the compression ratio is too high, the heat of compression will ignite the fuel prematurely. The low compression ratios needed to prevent premature ignition of the fuel-air mixture limited the efficiency of the Otto engine.

Rudolph Diesel wanted to build an engine with the highest possible compression ratio. He introduced fuel only when combustion was desired and allowed the fuel to ignite on its own in the hot compressed air. Diesel’s engine achieved an efficiency higher than that of the Otto engine and much higher than that of the steam engine. It also eliminated the trouble-prone electric-spark ignition system. Diesel received a patent in 1893 and demonstrated a workable engine in 1897. Today, diesel engines are classified as “compression-ignition” engines, and Otto engines are classified as “spark-ignition” engines.

What is the Carnot Cycle?

The Carnot Cycle has been described as being the most efficient thermal cycle possible, wherein there are no heat losses, and consisting of four reversible processes, two isothermal and two adiabatic. It has also been described as a cycle of expansion and compression of a reversible heat engine that does work with no loss of heat.

What is the Cheng Cycle?

The Cheng Cycle is a highly flexible and efficient method of optimizing a cogeneration plant, and more specifically a combined cycle power plant, which also provides a high amount of flexibility in the power and thermal energy output.

For a Cheng Cycle to be implemented, a gas turbine and waste heat boiler or heat recovery steam generator (HRSG) is required.  The gas turbine is updated to accept steam injection - the steam being "superheated steam" which is capable of handling up to 20% of the exhaust flow from the gas turbine. The saturated steam as well as the superheated steam, is generated from the waste heat boiler or heat recovery steam generator. 

When the Cheng Cycle is in 100% power mode, all of the steam that is produced by the "waste heat" from the gas turbine, is "recycled" through the gas turbine.  In cogeneration plants, the Cheng Cycle system is set-up so that steam may be used for process application and-or recycled back to the gas turbine. A duct burner is placed between the gas turbine and the waste heat boiler or the heat recovery steam generator (HRSG) which increases the total amount of steam output generated by the plant.

What is the Graz Cycle?

The Graz Cycle is the only thermodynamic combustion cycle that allows for the retention and capture of carbon dioxide emissions from the combustion of fossil fuels.

The Graz Cycle burns fossil fuel along with pure oxygen thereby enabling for the cost-effective separation of the carbon dioxide emissions from the combustion process through condensation. The additional expense for supplying the oxygen for the combustion process - and requirements for an air separation unit, are compensated, in part, through the increase in cycle efficiencies that exceed 65%. The combined efficiency of the Graz Cycle equals of exceeds the thermodynamic performance of other serious contenders in Carbon Capture and Sequestration (CCS).

The Graz Cycle is the thermodynamic cycle that provides for a "zero emission power plant" which also has the highest available efficiencies using gas turbines. The Graz Cycle has also been heralded as a "zero emission" power plant.

In practice, net electrical cycle efficiencies for Graz Cycle power plants have exceeded 65% - which is far higher than typical of state-of-the-art combined cycle plants.

According to the DOE web site, the Graz Cycle consists of a high temperature Brayton cycle and a low temperature Rankine cycle with a Heat Recovery Steam Generator. The Graz Cycle is an oxy-fuel power cycle with the capability of retaining all the combustion generated CO2 for further use. Its cycle configuration aims at highest efficiency by reducing the heat extraction in the condenser to a minimum. A thermodynamic investigation of the Graz Cycle fired with natural gas (CH4) shows a net efficiency of 52.5%, if the efforts for oxygen supply and CO2 compression to liquefaction are considered. If synthesis gas can be used from an external synthesis gas plant at 500°C, efficiencies can rise up to 56%. Studies indicate that further efficiency improvements and simplification of the cycle are possible.

What is the Kalina Cycle?

The Kalina Cycle was invented by Alexander Kalina, a Russian engineer, which he first demonstrated in the mid 1960's.

The Kalina Cycle is different from the Rankine Cycle in that the Kalina Cycle uses a water and ammonia solution in low temperature Waste Heat Recovery applications, such as geothermal power plants.  This increases the thermodynamic efficiency and power output. 

While few Kalina Cycle plants have been built to date, reports of the technology's efficiency may exceed that of the Organic Rankine Cycle and represent an exciting development in Waste Heat Recovery.

What is the Organic Rankine Cycle?

A Rankine Cycle is a closed circuit steam cycle. (Also - see Rankine Cycle). 

An Organic Rankine Cycle uses a heated chemical instead of steam as found in the Rankine Cycle.

Chemicals used in the Organic Rankine Cycle include freon, butane, propane, ammonia, and the new environmentally-friendly" refrigerants. 


Why use a chemical refrigerant? 

A refrigerant boils at a temperature below the temperature of frozen ice. Solar heat, for example, of only 150 degrees Fahrenheit from a typical rooftop solar hot water heater, will furiously boil a refrigerant. The resulting high-pressure refrigerant vapor is then piped to an organic Rankine Cycle engine. 


Why is it called "organic"? 

"Organic" is a term used in chemistry to describe a class of chemicals that includes Freon and most of the other common refrigerants.

What is the Rankine Cycle?

The Rankine Cycle is a thermodynamic cycle used to generate electricity in many power stations, and is the real-world approach to the Carnot Cycle. Superheated steam is generated in a boiler, and then expanded in a steam turbine. The steam turbine drives a generator, to convert the work into electricity. The remaining steam is then condensed and recycled as feed-water to the boiler. A disadvantage of using the water-steam mixture is that superheated steam has to be used, otherwise the moisture content after expansion might be too high, which would erode the turbine blades.

What is Stack Gas?

Stack gas also known as flue gas and "wasted heat," is the heat, passes through or "escapes" through a chimney or smokestack. Typically, stack gas begins with the combustion in a boiler of a fossil fuel, such as natural gas, diesel or coal. 

What is Waste Heat Recovery?

There are more than 500,000 smokestacks in the U.S. that are "wasting" heat, an untapped resource that can be converted to energy with Waste Heat Recovery technologies.

About 10% of these 500,000 smokestacks represent about 75% of the available wasted heat which has a stack gas exit temperature above 500 degrees F. which could generate approximately 50,000 megawatts of electricity annually and an annual market of over $75 billion in gross revenues before tax incentives and greenhouse gas emissions credits.

Waste Heat Recovery technologies represent the least cost solution which provides the greatest return on investment, than any other possible green energy technology or "carbon free energy" opportunity! 

Typical Waste Heat Recovery Installation

Many processes, especially in industrial applications, produce large amounts of excess heat – i.e., heat beyond what can be efficiently used in the process.  Waste Heat Recovery methods attempt to extract some of the energy as work that otherwise would be wasted.  

Typical methods of recovering heat in industrial applications include direct heat recovery to the process itself, recuperators, regenerators, and waste heat boilers.  In many applications – especially those with low-temperature waste heat streams, such as automotive applications – the economic benefits of waste heat recovery do not justify the cost of the recovery systems.  Innovative, affordable methods that are highly efficient, applicable to low-temperature streams, and/or suitable for use with corrosive or “dirty” wastes could expand the number of viable applications of waste heat recovery, as well as improve the performance of existing applications.  Our focus is on the development of innovative Waste Heat Recovery processes and techniques that are (1) more efficient than conventional methods, yet still cost-effective; and (2) applicable to waste streams from which heat cannot be recovered easily with conventional methods.

Turning to cooling, air conditioning systems consume approximately 10% of the energy used in U.S. buildings and are key contributors to peak demand.  Consequently, improving the energy efficiency of air conditioning systems would substantially reduce overall energy consumption and enhance grid reliability.  For example, compressors require cooling to dissipate the heat produced during compression and could benefit from improved surface heat transfer – innovative designs could increase the available heat-transfer area or materials enhancement could increase the heat flux between the hot and cool sides of a heat exchanger.  Similarly, a reduction in the requirement for condenser cooling could provide significant energy savings if more-efficient, cost-effective technologies were developed.  

This is where we believe waste heat recovery integrated with our Solar Trigeneration energy systems represents a unique opportunity for commercial and industrial clients. 

Industrial Waste Heat Recovery

Waste Heat Recovery from exit gases can significantly increase the energy efficiency of industrial processes.  Energy can be recovered from flue and stack gases, vent gases, and combustion gases at a variety of temperatures at large-scale industrial plants (chemical plants, petroleum refineries, biorefineries, pulp and paper mills, etc.).

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Is an Absorption Chiller or a Geothermal Heat Pump the Best Choice for You?

Absorption Chillers may be worth considering if your site requires cooling, and if at least one of the following applies:

• You have a combined heat and power CHP) unit and cannot use all of the available heat, or if you are considering a new CHP plant

• Waste heat is available

• A low-cost source of fuels is available

• Your boiler efficiency is low due to a poor load factor

• Your site has an electrical load limit that will be expensive to upgrade

• Your site needs more cooling, but has an electrical load limitation that is expensive to overcome, and you have an adequate supply of heat.

In short, absorption cooling may fit when a source of free or low-cost heat is available, or if objections exist to using conventional refrigeration. Essentially, the low-cost heat source displaces higher-cost electricity in a conventional chiller.

In Practice

In a plant where low-pressure steam is currently being vented to the atmosphere, a mechanical chiller with a COP of 4.0 is used 4,000 hours a year to produce an average 300 tons of refrigeration. The plant's cost of electricity is $0.05 a kilowatt-hour. 

An absorption unit requiring 5,400 lbs/hr of 15-psig steam could replace the mechanical chiller, providing annual electrical cost savings of:

Annual Savings = 300 tons x (12,000 Btu/ton / 4.0) x 4,000 hrs/yr x $0.05/kWh x kWh/3,413 Btu = $52,740

Actions You Can Take

Determine the cost-effectiveness of displacing a portion of your cooling load with a waste steam absorption chiller by taking the following steps:

• Conduct a plant survey to identify sources and availability of waste steam

• Determine cooling load requirements and the cost of meeting those requirements with existing mechanical chillers or new installations

• Obtain installed cost quotes for a waste steam absorption chiller

• Conduct a life cycle cost analysis to determine if the waste steam absorption chiller meets your company's cost-effectiveness criteria.

Absorption Chiller Refrigeration Cycle

The basic cooling cycle is the same for the absorption and electric chillers. Both systems use a low-temperature liquid refrigerant that absorbs heat from the water to be cooled and converts to a vapor phase (in the evaporator section). The refrigerant vapors are then compressed to a higher pressure (by a compressor or a generator), converted back into a liquid by rejecting heat to the external surroundings (in the condenser section), and then expanded to a low- pressure mixture of liquid and vapor (in the expander section) that goes back to the evaporator section and the cycle is repeated.

The basic difference between the electric chillers and absorption chillers is that an electric chiller uses an electric motor for operating a compressor used for raising the pressure of refrigerant vapors and an absorption chiller uses heat for compressing refrigerant vapors to a high-pressure. The rejected heat from the power-generation equipment (e.g. turbines, microturbines, and engines) may be used with an absorption chiller to provide the cooling in a CHP system.

The basic absorption cycle employs two fluids, the absorbate or refrigerant, and the absorbent. The most commonly fluids are water as the refrigerant and lithium bromide as the absorbent. These fluids are separated and recombined in the absorption cycle. In the absorption cycle the low-pressure refrigerant vapor is absorbed into the absorbent releasing a large amount of heat. The liquid refrigerant/absorbent solution is pumped to a high-operating pressure generator using significantly less electricity than that for compressing the refrigerant for an electric chiller. Heat is added at the high-pressure generator from a gas burner, steam, hot water or hot gases. The added heat causes the refrigerant to desorb from the absorbent and vaporize. The vapors flow to a condenser, where heat is rejected and condense to a high-pressure liquid. The liquid is then throttled though an expansion valve to the lower pressure in the evaporator where it evaporates by absorbing heat and provides useful cooling. The remaining liquid absorbent, in the generator passes through a valve, where its pressure is reduced, and then is recombined with the low-pressure refrigerant vapors returning from the evaporator so the cycle can be repeated.

Absorption chillers are used to generate cold water (44°F) that is circulated to air handlers in the distribution system for air conditioning.

"Indirect-fired" absorption chillers use steam, hot water or hot gases steam from a boiler, turbine or engine generator, or fuel cell as their primary power input. Theses chillers can be well suited for integration into a CHP system for buildings by utilizing the rejected heat from the electric generation process, thereby providing high operating efficiencies through use of otherwise wasted energy.

"Direct-fired" systems contain natural gas burners; rejected heat from these chillers can be used to regenerate desiccant dehumidifiers or provide hot water.

Commercially absorption chillers can be single-effect or multiple-effect. The above schematic refers to a single-effect absorption chiller. Multiple-effect absorption chillers are more efficient and discussed below.

Multiple-Effect Absorption Chillers

In a single-effect absorption chiller, the heat released during the chemical process of absorbing refrigerant vapor into the liquid stream, rich in absorbent, is rejected to the environment. In a multiple-effect absorption chiller, some of this energy is used as the driving force to generate more refrigerant vapor. The more vapor generated per unit of heat or fuel input, the greater the cooling capacity and the higher the overall operating efficiency.

A double-effect chiller uses two generators paired with a single condenser, absorber, and evaporator. It requires a higher temperature heat input to operate and therefore they are limited in the type of electrical generation equipment they can be paired with when used in a CHP System.

Triple-effect chillers can achieve even higher efficiencies than the double-effect chillers. These chillers require still higher elevated operating temperatures that can limit choices in materials and refrigerant/absorbent pairs. Triple-effect chillers are under development by manufacturers working in cooperation with the U.S. Department of Energy.

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Solar Trigeneration ^sm
www.SolarTrigeneration.com

We Do Solar Right ^sm

We install our Solar Trigeneration^sm Energy Systems, for qualified commercial businesses, as well as  cities, schools and government facilities with our Zero Up-front Cost program.

For some customers - based on their present location, utility company and electric rate - we are able to reduce their electric rate by 10%. Even more for other customers.  Solar Trigeneration^sm Energy System!

We provide the answers to your questions about solar power and energy!

Does your; business, city, school, or electric utility want a more sustainable solar power and energy solution?

Are you interested in transforming your facility, campus or building(s) to "Net Zero Energy"™ buildings?

Does your city or school have a problem with rising electricity and energy expenses, but not have the financial resources to provide the necessary updates and upgrades to make your buildings more efficient?

Maybe you have already decided to go solar, but you have a lot of questions, and don't know where to start.  Call us, we have the answers to your solar questions.

What is the optimum solar solution?  There are hundreds of companies in the solar power and energy industry.....  Who do you call to help you with these questions to help you make the right decisions?

There's still more questions, that you may not have thought about..... which solar technology do you go with, and what is the return on investment? 

Are there any solar rebates, refunds, tax credits or other incentives available?

What about investors that might be interested in owning/operating and maintaining our solar energy system under a Power Purchase Agreement?

You have numerous questions and need the answers to help in the decision-making process regarding the solar power and energy system you want to install.  These decisions will have a long-lasting impact as the solar energy system that you install at your business or facility will probably be generating clean power for the next 40 to 50 years, if not longer!  So, the decisions that you need to make now regarding your solar energy system will be a decision that will be either a long-term asset or a liability, depending on the equipment you select and who you choose to install it. 

We can help cities, schools and commercial (and large residential) customers make the switch to solar!

And now, with our no up-front cost for our Solar Trigeneration^sm Energy System, we can also transform your building(s) to a "Net Zero Energy Building"™ and many times, actually REDUCE your present energy expenses by 10%, and possibly more!

Examples of buildings/facilities where our Solar Trigeneration^sm Energy Systems would benefit, include; universities, churches, data centers, shopping centers, schools, radio/television stations, food processing, warehouses, new real estate developments and subdivisions, and electric utilities - practically any commercial facility can be upgraded to one of our "pollution free power" systems featuring one of our solar energy systems,  including our Solar Trigeneration^sm system!

Call or email us, we can provide these answers. We are focused on providing the optimum solar energy systems for our clients. This begins with an initial review of your past 12 months energy/electrical bills. The next step would include a site visit which may include a Demand Side Management study and/or a Solar Feasibility Study which determines the optimum solar energy system for your facility or location.  Once the optimum solar solution(s) are determined, we then have a blueprint to proceed that could include our installing one of our Solar Cogeneration or Solar Trigeneration energy systems.  Or for a city, real estate development or subdivision, or an electric utility, one of our utility scale power plants which might be a Concentrating Photovoltaic, Concentrating Solar Power or High Concentration Photovoltaic power plants.

What is "Net Zero Energy?"

Net Zero Energy - when applied to a home or commercial building, simply means that the home or buildings generates as much power and energy as they consume, when measured on a monthly or annual basis, and with an onsite, renewable energy system, such as our Solar Trigeneration Energy System. 

What is a Net Zero Energy Building^sm?

A Net Zero Energy Building produces as much energy as it uses over the course of a year. Net Zero Energy Buildings are very energy efficient. The remaining low energy needs are typically met with on-site renewable energy. 

First of all, understand that there is no such thing as a "zero energy building!" EVERY building uses energy, or you may as well be in a cave!  

The important considerations are, 

1.  How efficient is the building?  

2.  How much energy does the building use, and how efficiently is it used?  

3.  How much "carbon free energy" or "pollution free power" is generated by the buildings' own onsite renewable energy system?

4.  What are the utility company's prices for the excess power generated and sent to the grid? 
(see: Net Energy Metering)

5.  How difficult is it to interconnect the renewable energy system of the building with the utility company's powerlines/electric grid?   

At the heart of a Net Zero Energy Building is the idea that any building can meet its energy requirements from low-cost, locally available, nonpolluting, renewable sources, like our Solar Trigeneration Energy Systems. Our Solar Trigeneration Energy Systems are the idea whose time has come, to make Net Zero Energy Buildings commonplace.

Solar Trigeneration Energy Systems Provide All of the Cooling, Heating & Power, for Any Size Building, with only the Energy of the Sun. Solar Trigeneration Energy Systems Provide Simultaneous  Cooling, Heating & Power whether it is 12 Noon, or 12 Midnight,  and can do so, WITHOUT Connection to the electric grid!

The Diagram Below Shows How Our Solar Trigeneration Energy System Works, 
for Heating and Cooling a Building (next to the Solar Thermal Collectors, are the PV Panels, that generate the Electricity).

Our Solar Trigeneration^sm Energy System
provides "Cooling, Heating & Power" for your business,
or home with the free energy of the sun!

What is Net Energy Metering?

Net energy metering is used to measure a customer's total electric consumption against that customer's total on-site electric generation.  When a customer's onsite generation of power exceeds the amount that they use, the customer's solar energy system (or other renewable energy system) exports the extra electricity to the grid.  When the power requirements of the customer exceeds their onsite generation of power, the customer imports the electricity they need from electric grid. The customer pays the electric company for any extra power they use over the amount they generate - OR -  the customer receives a credit or refund from the electric company if they exported more power to the grid, than what they consumed.  

Renewable Energy Is Necessary for Net Zero Energy Buildings

Much focus is placed on energy efficiency as the most cost-effective way to reduce energy use in commercial buildings. However, consumption can be reduced only so much. There is a point at which the cost of adding efficiency measures is higher than that of using renewable energy such as thin film photovoltaics and other solar energy systems. 

Aggressive energy efficiency strategies can reduce a building's energy consumption by 50% to 70%. Renewable energy technologies must be used to reach the goal of a net-zero energy building (NZEB).

Supply-Side Technologies

Various supply-side renewable energy technologies are available for Net Zero Energy Buildings. Supply-side technologies, often called energy producers, collect natural energy and transform it into a useful form. Examples of these technologies include PV, solar hot water, wind, hydroelectric, and biofuels.

Ranking of Energy Options

All renewable sources are favorable over conventional energy sources such as coal and natural gas; however, the U.S. Department of Energy recommends the following ranking for these options (the lower numbers are preferable):

This hierarchy is weighted toward renewable technologies within the building footprint and site. Rooftop PV and solar water heating are the most applicable supply-side technologies for Net Zero Energy Buildings. Other supply-side technologies such as parking lot-based wind or solar energy systems may be available.

The goal in developing the ranking was to encourage technologies that:

• Minimize overall environmental impact by encouraging energy-efficient building designs and reducing transportation and conversion losses

• Will be available over the lifetime of the building

• Are widely available and have high replication potential for future Net Zero Energy Buildings.

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Solar Trigeneration^sm
www.SolarTrigeneration.com

Now, Your Business Can Have Our Solar Trigeneration™ 
Energy System, installed for No Up-Front Costs!

Through an affiliated partner company, we are now installing our Solar Trigeneration™ Energy Systems, for qualified commercial businesses, nationwide, with Zero up-front costs.

Some customers may even see a decrease in their energy expenses by as much as 10% to 20% with our Zero up-front cost Solar Trigeneration™ Energy System!

To qualify for our no up-front cost Solar Trigeneration Energy Systems, businesses must:

• Have a good credit rating

• Agree to buy all of the energy generated from the Solar Trigeneration™ Energy System through a 20 year Power Purchase Agreement

• Other conditions may apply, depending on location, state or utility company you are presently buying power from.

We expect ALL of our customers will be very happy knowing that the clean, green, renewable power they are using is: 

• More reliable than the electricity from the power company.

• Saving the environment by reducing Greenhouse Gas Emissions and helping reverse Climate Change and Global Warming.

• Generated from their own reliable Solar Power System on their roofs.

• Saving Money!  At today's published electric rates at Southern California Edison, TXU, Reliant and Centerpoint, most of our customers will also enjoy a SAVINGS on their present electric bills by as much as 10% from what they are now paying for their electricity from the electric utility.

• Under warranty.

• At the end of the Power Purchase Agreement, the Solar Trigeneration™ Energy System is then offered for sale to our customers, for $1.00.  And then their energy savings really start to add up as the power and electricity generated from their Solar Trigeneration™ Energy System is free!

Our "Solar Trigeneration^sm" Power and Energy Systems
Generate Carbon Free Energy and Pollution Free Power
Which is Sustainable, Clean, Renewable and Affordable

Solar Energy Systems provides cooler, cleaner, greener power and energy project development services.  Our Solar Energy Systems are an environmentally-friendly and economically-superior choice to expensive natural gas and electricity. Additionally, our renewable energy technologies generate "green tags" or a Renewable Energy Credit.  

We provide Solar Power and Energy systems that we refer to as "EcoGeneration" solutions that produce cooler, cleaner, greener power and energy for our customers and our environment. Unlike most companies, we are equipment supplier/vendor neutral. This means we help our clients select the best equipment for their specific application. This approach provides our customers with superior performance, decreased operating expenses and increased return on investment. 

Our company provides turn-key project solutions that include all or part of the following: 

• Engineering and Economic Feasibility Studies 

• Project Design, Engineering & Permitting

• Project Construction

• Project Funding & Financing Options

• Shared/Guaranteed Savings program with no capital requirements. 

• Project Commissioning 

• Operations & Maintenance 

• Green Tag/Renewable Energy Credit Application, and Marketing

Net Zero Energy Buildings^sm
www.NetZeroEnergyBuildings.com

The Audubon Nature Center Installs Solar Trigeneration  System
Making this one of the World's First "Net Zero Energy Buildings"
at Their New Facility in Los Angeles, California

NO CONNECTION TO THE ELECTRIC UTILITY!

The Solar Trigeneration  Provides All of their Facility's (5000 sq.ft.)
Cooling, Heating and Power Requirements - at 12 noon or 12 midnite,
WITHOUT ANY CONNECTION to the Electric Utility
with our Solar Trigeneration Energy System!  

The Sun Powers the Audubon Nature Center's Solar Trigeneration  
System at Debs Park in Los Angeles. The Audubon Nature Center's 
building is one of the world's first "Net Zero Energy Buildings." 
The Solar Trigeneration System Consists of a 10 Ton "Solar 
Absorption Cooling" System Matched with a Solar Electric 
Power System and a Solar Water Heating System

By:  Monty Goodell, MBA
www.SolarTrigeneration.com
Los Angeles, California

There is now a better, more efficient, “pollution free power” and "carbon free energy" solution for cooling, heating and powering homes and commercial buildings where solar energy is available. It's called Solar Trigeneration.

Solar Trigeneration is defined as the simultaneous generation of cooling, heating and power with only the free solar energy from the sun providing the "fuel". 

Solar Trigeneration is now a reality at the Audubon Center at Debs Park several miles from downtown Los Angeles and is one of the world's first "Net Zero Energy Buildings." Net Zero Energy Buildings." Net Zero Energy Buildings."

The Audubon Nature Center is totally powered by the sun’s energy and our Solar Trigeneration energy system!

The 5,300 square foot building operates entirely “grid-free” and without any electric connections to the electric grid, or natural gas connections – a truly sustainable power and energy solution. 

Best of all, the Audubon Center doesn’t rely on the over-burdened electric grid or even natural gas.  Therefore, the Audubon Nature Center NEVER receives an electric bill or natural gas bill.... ever!

The Audubon Nature Center's 5,000 square foot office and conference facility is powered by a Solar Trigeneration system that features a 25-kilowatt solar electric power system where the energy is stored in a bank of batteries. The Center is cooled by a 10-ton solar absorption cooling system powered by an array of very efficient solar heat pipe vacuum tube thermal collectors.  The collectors heat the water to temperatures of 200+ degree F stored in a 1,200 gallon insulated tank, another type of inexpensive battery. The Solar Trigeneration system at the Audubon not only provides the air-conditioning in the summer but also heats the building in the winter, and provides the hot water for the kitchen and bathrooms. 

Absorption chillers, and cooling with solar energy with an absorption chiller are not new technologies.  In fact, absorption chiller technology is over 70 years old.  The first refrigerators were powered by propane gas to run the absorption chillers that used ammonia as a refrigerant.  Electricity and the electric compression chiller gained popularity only because of the convenient “plug and play” appliance and relatively cheap electric rates.  Electricity is no longer economically, or environmentally “cheap.”

History of Cogeneration and Trigeneration

Few people realize that the world's first commercial power plant, designed and built by Thomas Edison, was a cogeneration power plant that was first opened on Pearl Street, in Lower Manhattan, New York.  That was in 1882!  Edison not only generated, and sold electricity in the several blocks surrounding his "Pearl Street Station" but he also sold the hot water that was also generated from the cogeneration plant. The fuel Edison used for generating the electricity and hot water (cogeneration) came from "pulverized coal." The Pearl Street Station provided 110 volts of "direct current" power to 59 customers in lower Manhattan, around his Pearl Street laboratory. 

Cogeneration is the simultaneous production of heat and power. 

Trigeneration is the simultaneous production of cooling, heating and power.

Our company, in partnership with the Renewable Energy Institute and our affiliated partners, have perfected "Solar Cogeneration" and "Solar Trigeneration" which are the "heart" of our Net Zero Energy Buildings.

Unlike traditional cogeneration and trigeneration power plants that are fueled by natural gas - and Thomas Edison's cogeneration plant, which was fueled with pulverized coal, our Solar Cogeneration and Solar Trigeneration energy systems are fueled with the energy of the sun!  And, while natural gas is a "cleaner" fuel, it still has its problems in that it is a limited resource and generates greenhouse gas emissions.  Natural gas also have had extreme price swings and has a history of price volatility.  Natural gas prices have gone from a high of $17.00/mmbtu to a recent low of under $3.00/mmbtu.  

Regarding pulverized coal, yes, it's cheap in terms of the cost of generating electricity, but too many people forget about the "externalities" of pulverized coal that is not reflected in the "cheap" costs of generating electricity from pulverized coal.  These costs not accounted for are the huge environmental cost relating to the use of pulverized coal.  Pound for pound, pulverized coal and coal fired power plants generate more greenhouse gas emissions than any other fossil fuel.  There are also the costs related to the health and safety issues of the miners that mine the coal.  And, the costs to the environment in terms of the ever-increasing amounts of mercury that are "dumped" into the environment from coal fired power plants, is also not reflected in the "cheap" price of generating power from pulverized coal.

Unlike the problems inherently found with the use of fossil fuels, Solar Cogeneration and Solar Trigeneration have no such problems. 

And talk about "cheap" costs of generating power and energy, there is nothing cheaper than free!!!!  

The owners of the Audubon Nature Center never receive any monthly natural gas or electric bills!

And the owners of the Audubon Nature Center will never have to account for their greenhouse gas emissions, or comply with the ever-increasing regulations related to greenhouse gas emissions and the pending Cap and Trade laws..... thanks to our  Solar Trigeneration energy system!

Solar Trigeneration is an EcoGeneration solution.  EcoGeneration refers to a power and energy system that uses the “natural” energy or fuel that is available for a specific site or location. Such energy or fuel includes, solar, wind, BioMethane, geothermal, and ocean power, including ocean tidal and ocean thermal energy conversion. For example, in the desert areas of the Southwestern U.S. , there is an abundance of solar energy. Therefore, home-owners and business owners in this part of the country should seriously consider an EcoGeneration system (“ecogen system”) that optimizes the opportunities available through solar energy

Today, the cause of the summer peak electric demand, electric supply problems, and black-outs, are the result of the energy crisis in California, primarily attributed to the air conditioning load. Over 40 percent of the electricity generated every day goes is used for air conditioning.  At this time of year, the electric utilities are forced to turn on all of their power plants to generate the “peak” demands required by the customers, primarily for air-conditioning.  This means that all of the efficient power plants, the inefficient power plants, along with all of the “peaking” power plants have to run to generate the electricity needed. The high cost of meeting the peak demand is passed on to the consumers with rates of $.20+ per kWh during the summer months. For fixed income seniors living in desert communities, they are already forced to conserve on energy, food, water, and other necessities of life. 

Greater Demands on California’s Limited Electric Supply, Lack of New Electric Power Supplies, and This Summer’s Heat Wave are Compounding the Problem Leading to the “Perfect Electric Storm”

Many people will remember the movie “The Perfect Storm” from several years ago, when several storms came together in the northeastern part of the U.S. to produce a deadly and catastrophic “perfect” storm. Today, a different type of “perfect storm” is brewing in California. The storm that’s looming on the horizon in California is a “perfect electric storm” wherein the supply of electricity from the electric utility company’s power plants are unable to keep-up with the demand – meaning a black-out, or loss of electricity, like the black-outs from previous years, and like the northeastern black-out from 2003.

The most likely time of year for a black-out in California, unfortunately, is the summer, when air-conditioners are running at the maximum, and placing the maximum load on California’s electricity supply.  Should such a black-out occur in the desert areas of California, where daily high temperatures routinely reach 110 degrees and higher, and where a significant percentage of the population is comprised of retired and senior citizens, and should the black-out be prolonged, a number of deaths will be the likely outcome. People, and especially the elderly, simply cannot tolerate prolonged high temperatures

How Do We Prevent the “Perfect Electric Storm” from Occurring in California and Other Regions in the U.S.?

Another major concern is how do we prevent the “Perfect Electric Storm” from happening, like the Northeast Blackout several summers ago, especially for people living in the desert?  California ’s energy authorities are warning of a possible energy crisis during the hot summer months, due to the excessive and prolonged summer temperatures where demand increases by over 40 percent.  Compounding the problem is the rising demand for electricity due to population growth and the limited transmission capacity in some areas in the region.  According to the California Energy Commission, the State must build three natural gas-fired 500-megawatt peaking power plants, every year, just to keep up with the growing demands of electricity. Failure to keep up with demand means The problem is getting worse due to the population growth in the Inland Empire , Coachella Valley and Antelope Valley. The projected power gap for the coming summers remains bleak.

Governor Schwarzenegger’s “Million Solar Roofs” program and the passage of the 2005 Federal Energy Act will be the foundation to create a “Perfect Solar Storm” to trigger the Solar Economy throughout California. 

With the threat of California’s seniors and elderly dying from heat exhaustion due to power outages, black-outs, rolling black-outs and the rising costs of electricity and natural gas, combined with the continuing impact of global warming, the perfect solution is to create a Solar Revolution by cooling, heating and powering the desert with solar energy and technologies like Solar Cogeneration or Solar Trigeneration.

For more information about Solar Energy Systems, such as Solar Cogeneration or Solar Trigeneration, call/email the Renewable Energy Institute

The Audubon Center's new Solar Trigeneration power and energy system
makes this building a "Net Zero Energy Building"

The Audubon's Roof showing the Solar Thermal Collectors, part of the 
Solar Trigeneration power and energy system

The heart of the Audubon's Solar Trigeneration power and energy system
provides "free heating, cooling and domestic hot water," a "net zero energy building."

The hot water from the Solar Thermal Collectors on the roof of the Audubon is 
pumped here for producing the building's heating, cooling and domestic hot water.
Hot water is stored in the tank on the left for overnight.
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How we make and distribute electricity is changing! 

The electric power generation, transmission and distribution system (the electric "grid") is changing and evolving from the electric grid of the 19th and 20th centuries, which was inefficient, highly-polluting, very expensive and “dumb.”  

The "old" way of generating and distributing energy resembles this slide:

The carbon clock tracks total carbon dioxide emissions in metric tons since 1750.

Since 1750, humans have emitted over 5 trillion pounds of carbon dioxide into the atmosphere. Roughly half of this has ended up in the oceans where it is beginning to damage the coral reefs. The other half is still in the atmosphere and causing global warming. Each pound of CO2 takes up as much space as a 500 pound person.

The formula (which should be good for a year or two) is:
C(t) = 2.58 ×1012 + 1240×t, where t is seconds since the start of 2007.

C is tonnes (metric tons) of carbon dioxide emissions.
2205 x C gives pounds of carbon dioxide emissions.

That comes to over 43 billion tons/year or over 86 trillion pounds/year.

Carbon dioxide (2) = 1 carbon atom with 2 oxygen atoms.
Carbon has relative weight 12 and Oxygen 16.
So it takes only 12 pounds of carbon to make 12+16+16 = 44 pounds of CO2. 

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Greenhouse Gas Emissions  
Linked to the Loss of Polar Bears

Photo courtesy of Alaska Image Library. U.S. Fish and Wildlife Service

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Hubbert's Peak Oil Predictions Now Proving True?

Marion King Hubbert was a geologist and scientist who worked at Shell Oil company's research lab in Houston, Texas.  Hubbert made several important contributions to geology, geophysics and petroleum geology.  Hubbert is most recognized for the "Hubbert Curve" and " Hubbert Peak Theory" which is now referred to as " Peak Oil. 

Hubbert's life work determined that the world has a finite amount of petroleum that can be produced.  (Similarly, there is a finite amount of coal.) Many scientists and engineers believe we have reached Hubbert's "peak oil" limit.  Hubbert's espouses that when 50% of domestic crude oil production has been reached, that there will be such significant upward demand on prices of the limited supplies of oil production, that the U.S. economy will experience severe economic, social, and political turmoil.

Hubbert's Peak Oil predictions have proven to be true and this is validated as the U.S. in the early 1970's produced about 60% of its' oil demand and imported 40%.  That equation has flipped since then, because our domestic oil production has been on the decline since 1970, so now, due to our declining domestic oil production, we have to import 60% of our oil supplies, to meet our country's oil/energy demands.

The Next Oil Shock Could be the "mother" of All Oil Shocks

How severe our economic calamity and next "oil shock" will depend upon a number of factors, including when this occurs, as well as the following:

1.  the dependence of the individual country upon its own crude oil production to meet its energy needs and to subsidize consumer imports; 

2.  the rate of relative decline in crude oil production; 

3.  the degree of difficulty encountered in replacing missing energy inputs; 

4.  the degree to which our country had prepared in advance for this inevitable geological and economic calamity.

Examples of past "oil shocks" and the economic and political calamities that followed:

United States: Our peak crude oil production of domestic oil occurred in 1970; the first "oil shock" and oil crisis followed in 1973 with the Arab/OPEC Oil Embargo.

Iran: Their peak crude oil production occurred in 1974; They had their islamic revolution 1979 that overturned government and replaced it with radical islam.

Soviet Union: Their peak crude oil production was in 1989; what happened next? 
Their country disintegrated and the collapse of the Soviet Union followed in 1991. 

Indonesia: Their peak crude oil production was in 1991; their financial and government crisis followed in 1997.

Iraq: Iraq's crude oil production was in 1989; they then invaded Kuwait (for their oil) in 1991.

Using Mr. Hubbert's predictions, that beginning around 2000  we would see peak (global) oil production, then, if the country's not weaning themselves off of their oil addiction, and had not begun making the switch to renewable energy, that the negative economic and political calamities would soon follow, including ever-increasing prices of energy that is from fossil fuels. 

Now is the time to begin weaning ourselves off of fossil fuels and making the transition to and increasing the use of renewable energy. If you don't believe in climate change, or global warming, GREAT! Join us in the switch to renewable energy and a fossil-free economy!

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America's "Clear and Present Danger"

America Has INCREASED its' Dependence on Foreign 
Sources of Energy by 50% Since 1973.

America is even more "addicted" to foreign oil today, than we were in 1973 - 1974 when OPEC, Saudi Arabia and other suppliers from the Middle-East  stopped selling us their fossil fuels, and created a significant blow to our economy.

This Means that 65% of America's Energy Supplies are Now Imported from Suppliers from Foreign Countries.  

Simply put, about 65% of the gasoline in your car's gas tank, comes from a foreign country.

EVERY day, the U.S. must IMPORT over 13 million bbls of oil from foreign countries and foreign suppliers to meet demand. 

At $80/barrel of oil, this also means that $1,040,000,000.00 American Dollars leave our country, EVERY DAY, to foreign countries/suppliers of our fossil fuels, to pay for the energy we need. 

That's $1 Billion EVERY day leaving our economy, and going to support a foreign country's economy. 

Talk about our foreign trade deficit..... nearly $400 Billion each year, leaves our country to pay for our oil addiction and the energy we need.  To be exact, that's $379,600,000,000.00 American Dollars.

This is NOT acceptable.

America needs to quickly transition to Energy Independence. 

Renewable Energy is the Only Way America Can Achieve Energy Independence. 

Millions of new and sustainable American jobs would be created here at home, if we would end our addiction to foreign fossil fuels, and quickly transition to an economy based on renewable energy and renewable fuels, produced here in the U.S.A. 

The good news is that today, America already has all of the Renewable Energy Resources and Renewable Energy Technologies needed to make American Energy Independence a reality. 

According to Monty Goodell, Founder and Chairman of the Renewable Energy Institute, "our increased dependence and reliance on foreign energy supplies represents a Clear and Present Danger to our national security, our economy, and the lives and livelihood of every American. Energy - including the energy we use from imported fossil fuels, is the very "lifeblood" of the American economy as it is for every industrialized country.  An economy dies without it's lifeblood of energy. This Clear and Present Danger we face is far more serious than the problems related to greenhouse gas emissions.  And while greenhouse gas emissions are very serious issue, in the long-term, pales in comparison to America's vital national security interests and America's economic stability in the short term.  For this reason alone, America needs to transition away from its addiction to foreign energy supplies. And America's abundant renewable energy resources such as the energy we receive from the sun, and renewable energy technologies such as concentrated solar power (CSP) plants - can supply 100% of America's power requirements with a concentrating solar power plant measuring 75 miles by 75 miles, located in the Southwest U.S.  By generating America's power from concentrating solar power plants, America resolves its' short-term Clear and Present Danger as it relates to importing its energy from foreign countries, and the long-term problems relating to greenhouse gas emissions."

Continuing, Mr. Goodell states that "too many Americans have forgotten what happened to us in 1973, when the Arabs and OPEC brought the United States economy to a screeching halt during the OPEC Oil Embargo.  This happened because they (mainly the country of Saudi Arabia) disagreed with our foreign policy and is the reason why they "turned off the tap" of our need for their oil supplies. When Saudi Arabia and OPEC stopped the vital flow of oil to our country in 1973, they caused an "oil shock" that severely and negatively impacted our economy. 

Mr. Goodell's question for us to ponder is, "do these countries who sell us 60% of our daily energy requirements, like us and our foreign policy, or might they leverage our addiction to their fossil fuels, and turn off the tap to make us adjust or revise our foreign policy??  Like any addict, America's foreign policy may be held hostage to its addiction, and in this case, our addiction to foreign oil, may over-ride our national interests."

Have American's forgotten the gas shortages and long lines at 
their gas stations to get gas during the Arab Oil Embargo of 1973? 

"Apparently so."  Mr. Goodell states that "in 1973, America was 'addicted' and 'over the barrel' of foreign oil to the amount of 40%.  Forty percent of our energy 'needs' in 1973 came from countries - many of which didn't like us then, and I'm afraid, many of them still don't.  The difference between 1973 and today - is that today we receive 50% MORE foreign oil now than we did in 1973.  And now we know about the problems relating to greenhouse gas emissions that we didn't know then.  America needs to change course, and change course now, in terms of its' energy supplies and how we keep America's economy strong, without the threat of being held hostage to a middle-east tyrant or regime, that could once again, turn on us, and turn off our supply of foreign oil." 

Remember ????

"Sadly, most Americans have forgotten the long lines of people waiting in their cars - lined up and waiting for gasoline at their nearby gas station, with lines that were many blocks long.  And, after waiting 4-5 hours, many even waiting overnight in many places, to finally take their turn to fill up their car with gasoline, only to find that the gas station had run out of gas." 

"Let me Repeat.... That was 1973 when we imported 40% of our daily energy requirements in the form of crude oil from overseas, and from foreign countries - and many of these from countries that don't like us.

Today, over 35 years later, America has yet to learn the lesson.  We cannot continue our reliance on energy from foreign countries that supply us with 60% of the crude oil that our refineries use as a feedstock for producing gasoline and diesel fuel for our cars and trucks comes from overseas.

America is "over the barrel" and it's not our barrel, but the barrels of oil that we are addicted by and owned by other countries.  Why have we not learned the lessons we needed to learn in 1973 when we were cut-off from the vital energy supplies we need? 

Countries like China, are growing rapidly, and have an insatiable need for crude oil. China, with their booming economy, is increasingly growing in its clout and control over international supplies of crude oil - whether they do this through their ability to buy as much oil as they need on a daily basis, or whether they simply but American drilling rigs, technology, and explore and produce oil and gas from their own fields. China, is buying large amounts of oil for their country, and causing upward pricing on declining supplies. What happens if Russia, with all of their oil and natural gas, along with China and Venezuela, with or without the help of OPEC, decided to NOT sell oil to us????

To be sure, greenhouse gas emissions are a problem, and to some, greenhouse gas emissions are also a Clear and Present Danger, but not to the extent that it presents an imminent Clear and Present Danger. 

America's reliance for 60% of our energy "needs" coming from foreign suppliers is un-acceptable.

The "driver" to get America to begin reducing and eliminating fossil fuel use should be our nation's national security and the welfare and safety of its citizens. And this can all begin with developing and investing in our own renewable energy resources and renewable energy technologies, let's start by putting solar on every rooftop that has a clear and unobstructed view of the Southern sky. See www.RooftopPV.com  or  www.DistributedPV.com  for more information.  Let's create incentives begin with adopting a national "Feed In Tariff" as Germany did in 1990. 

We simply do NOT have the luxury of time on our hands.  We need to end our dependence and reliance on foreign fossil fuels, especially from countries that don't like us! We need to rapidly begin expanding renewable energy resources and renewable energy technologies from our vast and abundant renewable energy resources, such as; solar, solar energy systems, solar cogeneration, solar trigeneration, "solar on every roof," along with; Biomass Gasification, B100 Biodiesel, Biomethane, E100 Ethanol (from cellulosic, agricultural waste, sugar cane, etc., and NOT from corn), Geothermal Power Plants, Natural Wastewater Treatment, Synthesis Gas, Waste To Energy, Waste To Fuel and Wind Power Generation where it makes economic and environmental sense."   

For more information, call or email:

Our following EcoGeneration technologies, including our Biomethane, B100 Biodiesel and Synthesis Gas Fuels Generated from our "Waste to Fuel" technologies are Carbon Free Energy and Pollution Free Power solutions that will:

* forever change the way energy is generated and used.

* eliminate or greatly reduce our customer's electric demand charges and electric expenses.

* slow, stop and eventually reverse climate change by reducing and then eliminating anthropogenic greenhouse gas emissions - of which carbon dioxide emissions makes up 80% of all greenhouse gas emissions.

* reduce and eventually eliminate the use of coal and other fossil fuels.

* reduce the need for inefficient and expensive central power plants owned by utility companies. 

* promote energy independence.

* end America's dependence on oil from OPEC and other countries in the Middle-East, Venezuela and end our need for importing natural gas from Russia.