Tds equations on unit mass/mole Unit mass Unit mole ④Tds=du+pdw Td=du+pd而 2) Tds dh -vdp Tds dh Udp Entropy -a property, the equations Applies to any process,reversible or irreversible Between two equilibrium states 上游充通大学 Wednesday,April 12,2017 10 SHANGHAI JIAO TONG UNIVERSITYWednesday, April 12, 2017 10 Tds equations on unit mass/mole Unit mass Unit mole 1 2 • Applies to any process, reversible or irreversible • Between two equilibrium states Entropy – a property, the equations