摘要
在考虑压力火用损失的情况下,给出了换热器传火用有效度的计算式。系统地讨论了传热单元数、冷热流体热容量比以及流型对以理想气体和不可压缩流体为目标介质的换热器传火用有效度的影响,并与不考虑压力火用损失的情况进行了比较,最后把换热器的传火用有效度与传热有效度进行了比较。
The calculation equation of exergy transfer efficiency is derived for heat exchanger considering pressure exergy loss. The effects of heat transfer unit numbers, heat capacity ratio of cold and hot fluids and flow patterns on exergy transfer efficiency of heat exchanger are discussed. The ideal gases （air） and incompressible liquid （water） are considered as object media. The calculation result is compared with that of not considering the flow-friction. The efficiency is compared with that of heat transfer of exchanger.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2007年第2期111-115,共5页
Journal of North China Electric Power University：Natural Science Edition
