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Steam Turbine Repairs
www.SteamTurbineRepairs.com

Steam Turbine Repair - The Leading Resource for Steam Turbine Repair

What is steam turbine repairs?

Steam Turbine Repairs is the leading site and resource for steam turbine repair.  We buy, sell and repair steam turbines, heat recovery steam generators, waste heat boilers, waste heat recovery boilers and gas turbines for cogeneration and trigeneration applications at our client's locations. 

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What is "Cogeneration"?

Did you know that 10% of our nation's electricity now comes from "cogeneration" plants?

And because cogeneration is so efficient, it saves its customers up to 40% on their energy expenses, and provides even greater savings to our environment through significant reductions in fuel usage and much lower greenhouse gas emissions.

Cogeneration - also known as “combined heat and power” (CHP), cogen, district energy, total energy, and combined cycle, is the simultaneous production of heat (usually in the form of hot water and/or steam) and power, utilizing one primary fuel such as natural gas, or a renewable fuel, such as Biomethane, B100 Biodiesel, or Synthesis Gas.

Cogeneration technology is not the latest industry buzz-word being touted as the solution to our nation's energy woes. Cogeneration is a proven technology that has been around for over 120 years!

Our nation's first commercial power plant was a cogeneration plant that was designed and built by Thomas Edison in 1882 in New York. Our nation's first commercial power plant was called the "Pearl Street Station."

What is "Trigeneration"?

Trigeneration is the simultaneous production of three forms of energy - typically, Cooling, Heating and Power - from only one fuel input. Put another way, our trigeneration power plants produce three different types of energy for the price of one.  

Trigeneration energy systems can reach overall system efficiencies of 86% to 93%.  Typical "central" power plants, that do not need the heat generated from the combustion and power generation process, are only about 33% efficient.

Trigeneration Diagram & Description
Trigeneration Power Plants' Have the Highest System Efficiencies and are 
About 300 % More Efficient than Typical Central Power Plants

Trigeneration plants are installed at locations that can benefit from all three forms of energy.  These types of installations that install trigeneration energy systems are called "onsite power generation" also referred to as "decentralized energy."   

One of our company's principal's first experience with the design and development of a trigeneration power plant was the trigeneration power plant installation at Rice University in 1987 where our trigeneration development team started out by conducting a "cogeneration" feasibility study.  The EPC contractor that Rice University selected installed the trigeneration power which included a 4.0 MW Ruston gas turbine power plant, along with waste heat recovery boilers and Absorption Chillers.  A "waste heat recovery boiler" captures the heat from the exhaust of the gas turbine.  From there, the recovered energy was converted to chilled water - originally from (3) Hitachi Absorption Chillers - 2 were rated at 1,000 tons each, and the third Hitachi Absorption Chiller was rated at 1,500 tons. The Hitachi Absorption Chillers were replaced shortly after their installation by the EPC company.  The first trigeneration plant at Rice University was so successful, they added a second 5.0 MW trigeneration plant so today, Rice University is now generating about 9.0 MW of electricity, and also producing the cooling and heating the university needs from the trigeneration plant and circulating the trigeneration energy around its campus.

Trigeneration Chart
Trigeneration's "Super-Efficiency" compared 
with other competing technologies
As you can see, there is No Competition for Trigeneration!

Our trigeneration power plants are the ideal onsite power and energy solution for customers that include:  Data Centers, Hospitals, Universities, Airports, Central Plants, Colleges & Universities, Dairies, Server Farms, District Heating & Cooling Plants, Food Processing Plants, Golf/Country Clubs, Government Buildings, Grocery Stores, Hotels, Manufacturing Plants, Nursing Homes, Office Buildings / Campuses, Radio Stations, Refrigerated Warehouses, Resorts, Restaurants, Schools, Server Farms, Shopping Centers, Supermarkets, Television Stations, Theatres and Military Bases.

At about 86% to 93% net system efficiency, our trigeneration power plants are about 300% more efficient at providing energy than your current electric utility. That's because the typical electric utility's power plants are only about 33% efficient - they waste 2/3 of the fuel in generating electricity in the enormous amount of waste heat energy that they exhaust through their smokestacks.

Trigeneration is defined as the simultaneous production of three energies: Cooling, Heating and Power.  Our trigeneration energy systems use the same amount of fuel in producing three energies that would normally only produce just one type of energy. This means our customers that have our trigeneration power plants have significantly lower energy expenses, and a lower carbon footprint.

Our New "Integrated" Trigeneration Plants Have 
Very High Efficiencies & Low Fuel Costs

The Effective Heat Rate is Approximately 
4050 btu/kW & System Efficiency is 92% Plants Have 
Very High Efficiencies & Low Fuel Costs

Pictures (below) of a Cogeneration Plant Presently Being Built for New Customer.  

This Cogeneration Plant 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 onsite trigeneration power and energy system can be an ideal solution for customers wanting increased power reliability and decreased energy and environmental costs.  A few of the types of buildings and businesses that would benefit from an onsite trigeneration plant include the following:

• Airports

• Casinos

• Central Plants

• Colleges & Universities

• Dairies

• Data Centers 

• District Heating & Cooling plants

• Food Processing Plants

• Golf/Country Clubs

• Government Buildings and Facilities 

• Grocery Stores

• Hospitals 

• Hotels

• Manufacturing Plants

• Military Bases

• Nursing Homes 

• Office Buildings / Campuses

• Radio Stations

• Refrigerated Warehouses 

• Resorts 

• Restaurants 

• Schools

• Server Farms

• Shopping centers 

• Supermarkets 

• Television Stations

• Theatres

Waste Heat Recovery in Cogeneration and 
Trigeneration power and energy systems

In most cogeneration and trigeneration power and energy systems, the exhaust gas from the electric generation equipment is ducted to a heat exchanger to recover the thermal energy in the gas. These heat exchangers are air-to-water heat exchangers, where the exhaust gas flows over some form of tube and fin heat exchange surface and the heat from the exhaust gas is transferred to make hot water or steam. The hot water or steam is then used to provide hot water or steam heating and/or to operate thermally activated equipment, such as an absorption chiller for cooling or a desiccant dehumidifer for dehumidification.

Many of the waste heat recovery technologies used in building co/trigeneration systems require hot water, some at moderate pressures of 15 to 150 psig. In the cases where additional steam or pressurized hot water is needed, it may be necessary to provide supplemental heat to the exhaust gas with a duct burner.

In some applications air-to-air heat exchangers can be used. In other instances, if the emissions from the generation equipment are low enough, such as is with many of the microturbine technologies, the hot exhaust gases can be mixed with make-up air and vented directly into the heating system for building heating.

In the majority of installations, a flapper damper or "diverter" is employed to vary flow across the heat transfer surfaces of the heat exchanger to maintain a specific design temperature of the hot water or steam generation rate.

Typical Waste Heat Recovery Installation

In some co/trigeneration designs, the exhaust gases can be used to activate a thermal wheel or a desiccant dehumidifier. Thermal wheels use the exhaust gas to heat a wheel with a medium that absorbs the heat and then transfers the heat when the wheel is rotated into the incoming airflow.

A professional engineer should be involved in designing and sizing of the waste heat recovery section. For a proper and economical operation, the design of the heat recovery section involves consideration of many related factors, such as the thermal capacity of the exhaust gases, the exhaust flow rate, the sizing and type of heat exchanger, and the desired parameters over a various range of operating conditions of the co/trigeneration system — all of which need to be considered for proper and economical operation.

For more information on Waste Heat Recovery and Waste Heat Boilers, call/email us.

What are Integrated Energy Systems?

An Integrated Energy System, or "IES" integrates distributed generation (DE) with thermally-activated power and energy technologies for heating and cooling. 

Integrated Energy Systems are more commonly referred to as "Trigeneration" plants and also commonly referred to as: 

• Cooling, Heating and Power

• CHP Systems

• Cooling Heating Power 

• Combined Heat And Power

• Cogeneration plus Absorption Chillers - or - ADsorption Chillers

• District Energy Systems

• Distributed Generation

• Dispersed Generation

Integrated Energy Systems are also at the center of every District Energy System.  

District Energy Systems, Integrated Energy Systems, or Trigeneration plants, no matter how they are referred, achieve overall, net system energy efficiencies of 80% plus, and several Trigeneration plants are nearing 90% efficiencies nearing almost 300% increased efficiency over power provided by electric utilities and their central power plants"!  This means significantly lowered: 

• energy costs

• fuel costs

• greenhouse gas emissions

Integrated Energy Systems achieve these greater energy efficiencies through the conversion of exhaust or reject heat from power generation into needed energy services like cooling and heating of buildings as well as campuses. This is called "Waste Heat Recovery" or "Recycled Energy."  Development of "packaged" or "modularized" Integrated Energy Systems for end-use applications, such as commercial and institutional buildings, is something the founder of our company has been involved with since the mid 1980's.

In the past, Cogeneration plants have been economically attractive only in sizes above several megawatts. The emergence of a number of small generation technologies, including fuel cells, advanced low emissions engines, and gas turbines with outputs in the 1000 kW - 5000 kW range, should extend the benefits of Integrated Energy Systems to a much larger user base, with a consequent increase in national energy and environmental benefits. 

For example, the application of Integrated Energy Systems (including Absorption Chillers - or - ADsorption Chillers) in commercial buildings could reduce commercial building energy consumption by 30%. 

Application of such smaller-scale packaged CHP Systems provides a major breakthrough in energy efficiency technology, energy savings as well as reduced greenhouse gas emissions. And, by locating the power generation at or near the end-user/consumer, i.e. their facility, building, or campus, the difficulties in siting and building new electric transmission and electric distribution infrastructures to meet today's increasing power demand are minimized.

The most promising markets for Trigeneration plants, District Energy Systems or Integrated Energy Systems are commercial or institutional buildings, government facilities, and district energy systems that distribute thermal energy to buildings in a college campus, hospital complex, industrial park, food processing operations, refrigerated warehouses, and also very attractive for cities.

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American Energy Plan
www.AmericanEnergyPlan.com

Gas Genset
www.GasGenset.com

Waste Heat Recovery Boiler
www.WasteHeatRecoveryBoiler.com

Wind Power Generation
www.WindPowerGeneration.com

Steam Turbine Repair