The effects of nonuniform inlet fluid conditions on crossflow heat exchanger
The effects of nonuniform inlet fluid conditions on crossflow heat exchanger
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不均匀入口流体条件对横流换热器的影响
DOI：
10.1016/j.ijheatmasstransfer.2017.12.084
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发表时间：
2018-05
影响因子：
5.2
通讯作者：
Haiyan Zhang
中科院分区：
文献类型：
--
作者：
Jiangfeng Guo;Xiulan Huai;Keyong Cheng;Xinying Cui;Haiyan Zhang
从分布式协调的角度研究了入口流量和温度不均匀条件对超临界压力CO2(S-CO2)为工质的横流换热器性能的影响。两种流体两侧的入口流量分布不均和入口温度不均匀可能会恶化或增强传热，并且两种流体的恶化或增强效果可能会叠加。具有强化作用的入口条件缓解了传热系数和温差的不均匀分布，提高了它们之间的分布协调性，最终强化了传热。总传热速率不仅取决于传热系数和温差的大小，而且还取决于它们的协调性。分布式协调分析表明，不均匀的入口流量和温度条件可以利用S-CO2的特殊特性来强化传热，而不会显着增加压降。本工作可为性质急剧变化的流体换热器的优化设计提供新的途径。
The influences of uneven inlet flow and temperature conditions on performance of crossflow heat exchanger using supercritical pressure CO2(S-CO2) as working fluid were investigated from the viewpoint of distributed coordination. The inlet flow maldistribution and inlet temperature nonuniformity in either side of both fluids could deteriorate or enhance heat transfer, and the deterioration or enhancement effect of both fluids could be superimposed. The inlet conditions with enhancement effect eases the uneven distributions of heat transfer coefficient and temperature difference, and improves the distributed coordination between them, and eventually enhances the heat transfer. The total heat transfer rate depends not only on the values of heat transfer coefficient and temperature difference, but also on their coordination. The distributed coordination analysis indicates that the uneven inlet flow and temperature conditions could be used to enhance heat transfer using the special characteristics of S-CO2without a significant increase of pressure drop. The present work may provide a new way to the optimization design of heat exchanger for the fluids with sharply variable properties.
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影响因子：
3.2
作者：
C. Anbumeenakshi;M. Thansekhar
通讯作者：
C. Anbumeenakshi;M. Thansekhar
DOI：
--
发表时间：
1982
期刊：
--
影响因子：
--
作者：
J. Chiou
通讯作者：
J. Chiou
影响因子：
9
作者：
Jiangfeng Guo;Xiulan Huai
通讯作者：
Jiangfeng Guo;Xiulan Huai
基于火积理论的两级潜热蓄热机组性能优化
DOI：
10.1016/j.ijheatmasstransfer.2014.05.049
发表时间：
2014
影响因子：
5.2
作者：
Tao Y. B.;He Y. L.;Liu Y. K.;Tao W. Q.
通讯作者：
Tao W. Q.
DOI：
10.1007/s11431-009-0382-z
发表时间：
2010-03
期刊：
Science China Technological Sciences
影响因子：
--
作者：
Shaojun Xia;Lingen Chen;F. Sun
通讯作者：
Shaojun Xia;Lingen Chen;F. Sun