A heat exchanger that heats the fuel gas of a gas turbine, a major piece of equipment for combined cycle power plants, to the required temperature. 

A gas turbine generates power using energy rotating turbine wings with heat energy of high temperatures and pressure fuel gas. The fuel gas heater is a heat exchanger increasing the temperature of fuel gas to enhance the heat energy of fuel gas. It is applied as a TEMA BFU type (low-finned u-tube type). For high-pressure operation conditions and compact spatial restriction, the PCHE (printed circuit heat exchanger) type can be supplied.