| 非共沸工质换热匹配特性影响热泵性能的高级分析 |
| |
| 引用本文： | 梁坤峰,冯长振,王莫然,董彬,王林,刘瑞见.非共沸工质换热匹配特性影响热泵性能的高级分析[J].化工学报,2021,72(4):2038-2046. |
| |
| 作者姓名： | 梁坤峰 冯长振 王莫然 董彬 王林 刘瑞见 |
| |
| 作者单位： | 1.河南科技大学车辆与交通工程学院，河南 洛阳 471003;2.河南科技大学土木工程学院，河南 洛阳 471003 |
| |
| 基金项目： | 国家自然科学基金项目(U1304521);河南科技大学创新团队项目(2015XTD004) |
| |
| 摘 要： | 针对非共沸工质非线性复杂相变传热过程，基于高级 分析方法，推导出表征热泵系统性能的评估指标模型——温度匹配度（TMD），探讨了非共沸工质与换热流体之间的换热匹配特性，实验验证了模型的准确性与适用性。选用了三组不同温度滑移程度的非共沸工质（M1、M2、M3）为对象，探究了TMD与换热夹点、系统COP、 效率η以及换热器实际 损占比ε之间的关系。结果表明：TMD越小，换热流体间的温度匹配越好，系统COP、 效率越大，换热器实际 损占比越小，反之亦然；且当TMD最小时换热器内夹点总是出现在饱和气态点处。
|
| 关 键 词： | 热泵 高级分析 非共沸工质 温度匹配度 |
| 收稿时间： | 2020-07-27 |
Advanced exergy analysis of heat pump performance affected by heat transfer matching characteristics of non-azeotropic refrigerants |
| |
| LIANG Kunfeng,FENG Changzhen,WANG Moran,DONG Bin,WANG Lin,LIU Ruijian.Advanced exergy analysis of heat pump performance affected by heat transfer matching characteristics of non-azeotropic refrigerants[J].Journal of Chemical Industry and Engineering(China),2021,72(4):2038-2046. |
| |
| Authors: | LIANG Kunfeng FENG Changzhen WANG Moran DONG Bin WANG Lin LIU Ruijian |
| |
| Affiliation: | 1.College of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China;2.School of Civil Engineering, Henan University of Science Technology, Luoyang 471003, Henan, China |
| |
| Abstract: | This work is aimed at the non-azeotropic working fluid nonlinear and complex phase change heat transfer process, based on the advanced exergy analysis method, deduced the evaluation index model that characterizes the heat pump system performance—temperature matching degree (TMD), the heat transfer matching characteristics between the non-azeotropic working fluid and the heat exchange fluid are discussed, the accuracy and applicability of the model are verified by experiments. Three representative non-azeotropic working fluids with different temperature slip degrees (M1, M2, M3) are selected as objects, the relationship between TMD and heat exchange pinch point, system COP, exergy efficiency η and actual exergy loss ratio of heat exchanger ε were investigated. The results show that the smaller the TMD, the better the temperature matching between the heat exchange fluids, the greater the COP and exergy efficiency η of the system, the smaller the actual exergy loss of the heat exchanger, and vice versa; and when the TMD is the smallest, the pinch point in the heat exchanger always appears at the saturated gas point . |
| |
| Keywords: | heat pump advanced exergy analysis non-azeotropic working fluid temperature matching degree exergy |
|
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
|
