为了研究环境温度对微型燃气轮机关键部件与系统全工况运行特性的影响规律，针对100 kW级微型燃气轮机，通过模块化的建模方法建立了全工况计算模型，在环境温度-30~40 ℃、转速在75%~100%工况下，对机组与关键部件的运行特性进行了计算和分析。结果表明：随环境温度下降压气机压比与流量显著升高；燃气初温降低，回热器换热性能与压损均降低，机组功率、回热度与发电效率得到提升；当环境温度降低使机组功率高于设计功率时，随功率增加发电效率下降。

In order to study the influence rule of ambient temperature on the full operating characteristics of the key components and system of the micro gas turbine,a full working condition calculation model was established for a 100 kW micro gas turbine by the modular modeling method.When the ambient temperature was between -30 ℃ and 40 ℃ and the speed was between 75% and 100%,the operating characteristics of unit and key components were calculated and analyzed.The results show that as the ambient temperature decreases,the compressor pressure ratio and flow rate increase significantly; when the initial gas temperature decreases,the heat exchange performance and pressure loss of the recuperator are both reduced,and the unit power,recuperated effectiveness and generating efficiency are increased; when the unit power is higher than the design value due to the decrease of the ambient temperature,the generating efficiency will decrease with the increase of the power.

TK472+5

中央高校基本科研业务费（2017XS044）