| 考虑压力(火用)时换热器的传(火用)有效度 |
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| 引用本文： | 吴双应,袁晓凤,李友荣.考虑压力(火用)时换热器的传(火用)有效度[J].华北电力大学学报,2007,34(2). |
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| 作者姓名： | 吴双应 袁晓凤 李友荣 |
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| 作者单位： | 重庆大学,动力工程学院,重庆,400044;重庆大学,动力工程学院,重庆,400044;重庆大学,动力工程学院,重庆,400044 |
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| 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。
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| 关 键 词： | 换热器 压力(火用)损失 传(火用)有效度 传热有效度 |
Exergy transfer efficiency of heat exchanger considering pressure exergy loss |
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| WU Shuang-ying,YUAN Xiao-feng,LI You-rong.Exergy transfer efficiency of heat exchanger considering pressure exergy loss[J].Journal of North China Electric Power University,2007,34(2). |
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| Authors: | WU Shuang-ying YUAN Xiao-feng LI You-rong |
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| Abstract: | 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. |
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| Keywords: | heat exchanger pressure exergy loss exergy transfer efficiency heat transfer efficiency |
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