參考標準:《換熱器設計手冊》錢頌文 2002年版 P74(59) △t1/△t2<2時,換熱器平均溫度按照公式△tm=(△t1+△t2)/2計算;當△t1/△t2≥2時,按照公式△tm=(△t2-△t1)/ln(△t2/△t1)進行計算 式中,△t1為較小溫度差,℃;△t2為較大溫度差,℃;△tm為平均溫度差,℃; |
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