A METHOD OF INCREASING THE EFFICIENCY OF A FUEL GAS TURBINE BY COOLING COMBUSTION AIR

摘要

A method of increasing the efficiency of a fuel gas turbine by cooling combustion air. A first step involves providing a heat exchanger having a first fluid path a nd a second fluid path, such that a heat exchange takes place between fluids passing along the first fluid path and fluids passing along the second fluid path. A second step involves lowering fuel gas pressure to match fuel inlet pressure requirements for the fuel gas turbine, with the lowering in pressure resulting in a lowering in temperature of the fuel gas. A third step involves directing low temperature fuel gas through the first fluid path of the heat exchanger and combustion air through the second fluid path of the heat exchanger, such tha t a heat exchange takes place that raises the temperature of the fuel gas and. lowers the temperature of the combustion air.