Continue Exergy Analysis for Closed Systems 77? 1?? Wuse.max =-(AUCM2 +AKECM2 +APECM2 +AU) The changes in internal energy of the system(CM2)and the environment can be calculated by: .Environment ToPo AUcM2=(U。-U)cM2 I CM2 Closed AU.Q。-W,=IAS.-P,AV System Constant for environment △KEe=0,△PEe=0 Substitution into the equation for useful work leads to: Wuse.masx =(U-U)CM2 +AKECM2+APECM2-TAS +PoAVe 上游通大学 May2,2018 6 SHANGHAI JIAO TONG UNIVERSITYMay 2, 2018 6 Continue Exergy Analysis for Closed Systems The changes in internal energy of the system (CM2) and the environment can be calculated by: Substitution into the equation for useful work leads to: CM2 o CM2 e e e o e o e U (U U) U Q W T S p V           Constant for environment W (U U ) KE PE T S p V use,max o CM2 CM2 CM2 o e o e           Closed System Environment @ To ,po Qi CM2 CM1 Wi Wuse W ( U KE PE U ) use,max CM2 CM2 CM2 e          ?? ?? ?? ?? ΔKEe = 0, ΔPEe=0