The combination of one or more gas turbines and steam turbines in an electric generation plant. An electric generating technology in which electricity is produced from otherwise lost waste heat exiting from one or more gas turbines.
Running two heat engines in a row. The first heat engine generates electricity by using a gas turbine. The second heat engine generates elecctricity by using the wast heat from the first heat engine to make steam, which turns a steam turbine. By combining the two heat engines, more work can be extracted from the initial temperature difference, although implementing the second heat engine can often be costly.
The combination of a gas turbine and steam turbine in an electric generating plant. The waste heat from the first turbine cycle provides the heat energy for the second turbine cycle.
A cogeneration technology in which additional electricity is produced sequentially from otherwise lost waste heat exiting from one or more gas-fired turbines. The exiting heat flow is routed to an exhaust-fired conventional boiler or to a heat recovery steam generator for utilization by a steam turbine in the production of electricity. This process increases the efficiency of an electric generating system by turning the rejected heat into thermal steam rather than discharging it into the atmosphere.
An electric generating technology in which electricity is produced from otherwise lost waste heat exiting from one more gas (combustion) turbines. The exiting heat is routed to a conventional boiler or to a heat recovery steam generator for use by a steam turbine in the production of electricity. This process increases the efficiency of the electric generating unit.
Similar to the combustion turbine simple cycle, but includes a heat recovery steam generator that extracts heat from the combustion turbine exhaust flow to produce steam. This steam in turn powers a steam turbine engine.
Two or more generation processes operating in parallel, so as to increase the energy output from a power system. In a combined-cycle power plant, the waste heat from a gas turbine provides heat for a steam turbine.
Technology that captures waste heat from gas turbines to produce more electricity.
A generation technology in which electricity is produced from otherwise lost waste heat exiting from one or more gas (combustion) turbines. Exiting heat is routed to a conventional boiler or heat recovery steam generator for utilization by a steam turbine increasing the efficiency of the generating unit.
Generation is a high-efficiency power production process. In a typical combined cycle power plant, combustion turbines (essentially large jet engines) burn natural gas or oil to generate electricity in the first cycle. In the second cycle, the exhaust heat is captured, rather than vented into the atmosphere, and is used to generate steam, which drives steam turbines to supply additional electric power. By using heat that otherwise would have been wasted to generate additional power, the combined cycle unit can produce cost savings as well as increased operating efficiency. Furthermore, this greater efficiency means more power is produced per unit of fuel, resulting in lower overall plant emissions.
Combined cycle is a term used when a power producing engine or plant employs more than one thermodynamic cycle. Heat engines are only able to use a portion of the energy their fuel generates (usually less than 30%). The remaining heat from combustion is generally wasted.