Gas Turbine Generation

Conventional Gas Turbine Generation

Conventional high efficiency gas-fired turbine generation is often used when large amounts of power, generally greater than 50 MW, are required. To generate power, conventional generation utilizes proven technologies, such as simple-cycle gas turbine, combined-cycle gas turbine (CCGT) and Cogeneration. Natural gas-fired CCGT facilities are often the most efficient, effective and environmentally responsible solution to providing large amounts of highly reliable power within a particular region.

In CCGT technology, electrical energy is produced in two stages.

Stage 1:

Thermal energy is produced by combusting natural gas in a gas turbine generator. This process creates mechanical energy which in turn drives an electric generator to produce electricity.

Stage 2:

A heat recovery steam generator recovers heat energy from the turbine exhaust. This energy is then used to create steam that is delivered to a steam turbine generator to create additional electricity.

The combination of these two stages results in the production of electricity in combined cycle.

Conventional Gas Turbine Cogeneration

Cogeneration uses a slip stream of steam or energy extracted from the heat recovery boiler or steam turbine generator. This may be sold to a local industrial host, often replacing higher cost and older and less efficient steam boilers. Overall, Cogeneration efficiency can be as high as 65%.

Pristine is presently constructing a 84 MW Cogeneration facility in Windsor, Ontario. The East Windsor Cogeneration Centre utilizes two General Electric LM 6000 gas-fired units and recovers heat using two IST once-through steam generator boilers to supply Cogeneration steam to a local industrial host.