1st law application Mass rate balance inlet =∑成-∑m: Compressor exit di 立 Compressed Energy rate balance 长-0-成+区（产 dt ·Wcv is primary Heat transfer secondary ·△PE&△KE<<W 上游通大学 March 28,2019 4 SHANGHAI JLAO TONG UNIVERSITYMarch 28, 2019 4 1 st law application Mass rate balance Energy rate balance • Wcv is primary • Heat transfer secondary • ∆PE & ∆KE << W