2.9 Entropy Changes(2) S.J.T.U. Phase Transformation and Applications 变化过程的 熵很重要， 所以要计算 H=△Hm △H= Temperature S= Cpu dT Kdonud △Hm △S= P(S Temperature SJTU Thermodynamics of Materials Fall 2018 ©X.J.Jin Lecture 5 property relationPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Fall 2018 © X. J. Jin Lecture 5 property relation 2.9 Entropy Changes (2)   = Tm T P S dT T C S 1 ( )   = Tm T P l dT T C S 1 ( ) m m m T H S   = Temperature Entropy   = Tm T H CP S dT 1 ( )   = Tm T H CP l dT 1 ( ) H = H m Temperature Enthalpy 变化过程的 熵很重要， 所以要计算