| 微通道蒸发器的传热性能实验研究 |
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| 引用本文： | 孙帅,陈华,段鼎立.微通道蒸发器的传热性能实验研究[J].低温工程,2020(3):48-53. |
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| 作者姓名： | 孙帅 陈华 段鼎立 |
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| 作者单位： | 天津商业大学天津市制冷技术重点实验室 |
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| 基金项目： | 天津市自然科学基金项目(18JCYBJC90300);天津市企业科技特派员项目(19JCTPJC53200)支持。 |
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| 摘 要： | 采用实验的手段,探究了制冷剂侧流速改变(雷诺数)对微通道蒸发器流量分配、压降、传热系数以及制冷剂侧换热特性(努塞尔数)的影响。研究表明:随着制冷剂侧流量的增加,微通道蒸发器第一流程制冷剂的流量分配变得更加均匀,进出口的压降随之增大,传热系数及制冷剂侧努塞尔数也逐渐增大,换热效果不断增强。
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| 关 键 词： | 微通道蒸发器 流量分配 压降 传热系数 努塞尔数 |
Experimental study on heat transfer performance of micro-channel evaporator |
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| Sun Shuai,Chen Hua,Duan Dingli.Experimental study on heat transfer performance of micro-channel evaporator[J].Cryogenics,2020(3):48-53. |
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| Authors: | Sun Shuai Chen Hua Duan Dingli |
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| Affiliation: | (Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, China) |
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| Abstract: | A experiment was carried out to explore the influence of refrigerant side flow rate change(Reynolds number)on flow distribution,pressure drop,heat transfer coefficient and refrigerant side heat transfer characteristics(nusselt number)of micro-channel evaporator.The research shows that:with the increase of refrigerant side flow rate,the flow distribution of refrigerant in the first stage of micro-channel evaporator became more uniform,the pressure drop between inlet and outlet increases,the heat transfer coefficient and the refrigerant side nusselt namber also increased gradually,hence the heat transfer effect was continuously enhanced. |
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| Keywords: | micro-channel evaporator flow distribution pressure drop heat transfer coefficient nusselt number |
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