General Electric Company
System and method for improving output and heat rate for a liquid natural gas combined cycle power plant

Abstract:

A combined cycle power plant and heating and cooling system and method for the power plant is disclosed as having a liquid natural gas supply and a vaporizer configured to vaporize the liquid natural gas into natural gas that is supplied to a gas performance heater before entering a combustion section of a gas turbine. A closed cooling water circuit is in fluid communication with at least one power plant component such as a gas turbine inlet heating/cooling coil, a heat recovery heat exchanger, the vaporizer, and mixtures thereof. An open cooling water circuit is in fluid communication with at least one power plant component such as at least one steam turbine condenser, the heat recovery heat exchanger, and mixtures thereof.