Usin segmented compression exponent to calculate the exhaust temperature of the single stage high pressure ratio air ocmpressor

摘要

Today,to claculate the terminal temeprature of compression of the single stage high pressure ratio compressor,the traditional method is using hte constant process exponent.This calculation mehtod creastes a lage error in the result compared with the measruemnts.To eliminate the error the author brings out a calculation method which separates the high compresison process into server segments.The new method segments the whole compression process of the cylinder into entropy increment porcess,isentropic process and entropy decrement process which are all have a low pressure ratio and it is suitable for engineering uses.By using different exponent of process,the calculation result is more closely to the real process.Based on this mehtod,the paper leads out the equations of the compression terminal temperature and the exhaust temperature of the high pressure ratio compressor with considerations of suction,discharge pressure loss,suction temeprature rise and discharge temperature drop.