进气冷却在微型燃气轮机冷、电联供系统中的应用

Application of Inlet Air Cooling in Micro Gas Turbine Combined Cooling and Power Generation System

对进气冷却在微型燃气轮机冷、电联供系统中的应用进行了研究.提出了用联供系统生产的冷能对压气机进口空气进行冷却来改善联供系统在高温天气下性能的方法,并结合具体算例进行了分析.结果表明:进气冷却可使微型燃气轮机在环境温度升高的情况下仍能稳定在设计工况点附近运行;环境温度越高,其对微型燃气轮机性能改善的效果越明显;余热供冷功率会因冷却空气而减少,但用微型燃气轮机比进气冷却前多发的电功率来驱动电空调制冷,可补偿制冷功率损失,并使系统总的供冷功率得到很大提高;进气冷却是高温天气下提高微型燃气轮机冷、电联供系统性能的有效措施.

The application of inlet air cooling in the micro gas turbine CCP （combined cooling and power generation） system was studied. The method of cooling the inlet gas of compressor using the cooling energy generated by the CCP system was proposed which can notably improve the performance of the CCP system at high temperature weather, and an analyzing was done combined with a specific case. The results show that inlet air cooling can stabilize the performance of micro gas turbine operating around the design condition. The higher the ambient temperature is, the more effectively the performance of the micro gas turbine is improved. Apparently the cooling energy output generated by using the surplus heat will decrease when the partial cooling energy is used to cool the inlet air. However, the total cooling energy output of the system will increase when the electrically driven air conditioner is used to compensate the cooling energy output by using the excess electric power. In a word, inlet air cooling is an effective and feasible measure which can improve the performance of the micro gas turbine CCP system when environmental temperature is high in summer.