Energy balance for transient process General energy rate balance dEev dt a.-成+∑(a+年-到(+是+密 Integrate from 0>t 2m-o=0.-取+(a）-(a ↓ hmi home U(d)-Ue(O)=Oev-Wcv+∑mh;-∑mehe Intensive property form? --->No but only when uniform 上游充通大 Mar/29,Wed,2017 3 SHANGHAI JIAO TONG UNIVERSITYMar/29, Wed, 2017 3 Energy balance for transient process General energy rate balance Integrate from 0  t Intensive property form? Qcv= mqcv No but only when uniform ??