Definition of exergy(availability)for CM Definition of exergy_(availability)for closed system →Φ=Wrev.use,.max Φ=U-U。+p(V-Vo)-T,(S-So)+KE+PE is a property！ >=0 in specific terms 芳-e-)T- = Available Energy in Env. Min.work Min.heat transfer Total to or from Energy on or by Energy Environment Environment Can be Converted to work Unavailable energy,Anergy cannot be converted to work Note:available unavailable constant! 上游充通大 May2,2018 9 SHANGHAI JIAO TONG UNIVERSITYMay 2, 2018 9 Definition of exergy (availability) for CM     2 o o o o o v u gz u p v v T s s 2                    Note: available + unavailable = constant! Available Energy Min. work on or by Environment Min. heat transfer to or from Environment Total Energy = - Can be Converted to work Unavailable energy, Anergy cannot be converted to work in specific terms Energy in Env. Definition of exergy (availability) for closed system :  F = Wrev,use,max F = U – Uo +po (V – Vo ) – To (S – So ) + KE + PE is a property! >=0