| 摘要 |
PURPOSE: A discharge air temperature control device of a compressor for a double fuel gas turbine and a method thereof are provided to keep constant temperature of discharge air by receiving coolant having wide ranges of temperature and by decreasing flow of coolant in an air spray mode and a fuzzy mode. CONSTITUTION: A temperature control apparatus of discharge air from a compressor is composed of a heat exchanger(50), a valve regulating coolant flowing through the heat exchanger, first and second detour passages(64,66) having orifices(68), and a detour valve opened in an air spray mode to flow coolant through detour passages and orifices. Discharge air is supplied to the heat exchanger to exchange heat with coolant having low temperature. The temperature of discharge air is controlled with regulating flow of coolant flowing through the heat exchanger, and the flow of the coolant flowing through the heat exchanger is minimized in operating a gas turbine in a liquid fuel mode. The flow of coolant through the heat exchanger is reduced to be less than the minimum flow in operating the gas turbine in a gas fuel mode. The temperature of discharge air is controlled with closing the flow control valve according to low temperature of discharge air in the air spray mode, and by reducing flow of coolant in a fuzzy mode.
|
