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燃气轮机的性能与环境温度有关,其出力随燃气进气温度升高而降低的问题可通过冷却燃气进气来解决。冷却燃气进气有直接接触和间接接触2种方法。直接接触式有水膜式蒸发冷却和喷雾冷却;间接接触式有压缩制冷、吸收制冷、蓄冷冷却和液化天然气冷能利用。直接接触式冷却装置的优点是初投资较少,运行及维护费用较低,但冷度较低,受环境湿度影响较大,适用于干燥、炎热地区。在工程中选用何种冷却进气方式应结合实际情况,综合考虑峰谷电价差、资金情况、气象参数、年运行时间等进行技术经济分析确定。
The performance of a gas turbine is related to the ambient temperature. The problem of its output decreasing as the temperature of the gas inlet increases can be solved by cooling the gas inlet. There are two ways to cool the gas inlet with direct contact and indirect contact. Direct contact with water film evaporative cooling and spray cooling; Indirect contact compression refrigeration, absorption refrigeration, storage cooling and liquefied natural gas cold utilization. Direct contact cooling device has the advantage of less initial investment, lower operating and maintenance costs, but lower cold, humidity greatly affected by the environment, suitable for dry and hot areas. What type of cooling air intake should be selected in the project should be technically and economically determined according to the actual situation and taking into account the price difference between valleys and troughs, capital, weather parameters, and annual operation time.