| Gas Turbine : |
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| What is Gas Turbine based cogeneration? |
In Gas Turbine based Cogeneration is a natural gas (or diesel) turbine coupled with an electrical generator which produces electricity. The exhaust heat from the gas turbine is directed to a waste heat recovery boiler ("WHRB"). Here the heat from gases trapped and steam is produced.
This steam can be used for process or for power generation. The various application of gas turbine based
cogeneration is as shown in diagram.
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| How does a Gas
Turbine unit works? |
Gas Turbine is a high-technology package that is comprised of a compressor,
combustor, power turbine, and generator, as shown in the figure below:
In a gas turbine, large volumes of air are compressed to high pressure in a multistage compressor for distribution to one or more combustion gases from the combustion chambers power an axial turbine that drives the compressor and the generator before exhausting to atmosphere. In this way, the combustion gases in a gas turbine power the turbine directly.
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| What are the advantages of gas turbine based cogeneration? |
- High Combined Efficiency :
By effectively using the high-temperature gas released during power generation, Gas Turbine Co-Generation can significantly increase combined energy efficiency.
- Reliability :
The core part of the system is a simple, single-shaft gas turbine. The turbine, and other components such as the alternator and heat recovery steam generator, are all designed with durability in mind.
- Outstanding Environmental Benefits :
Low emission technologies such as dry low emission (DLE) combustion or catalytic combustion have great environmental benefits. Also, the gas turbine is a rotary engine, therefore mitigating the machine's vibration compared to other engine types with reciprocating movements. Furthermore, the system's high combined efficiency has important environmental advantages, namely a substantial reduction in carbon dioxide emissions.
- Easy Operation and Maintenance :
The gas turbine runs automatically by a simple button operation. The maintenance work is straightforward, as the turbine is composed of a limited number of parts.
- Light Weight and Compact :
The whole system is skillfully designed to be lightweight and compact. It can be installed anywhere, even in small spaces on the roof or underground.
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