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微通道分液冷凝器小流量下的换热性能与压降实验研究
Experimental Study on Heat Transfer Performance and Pressure Drop of Microchannel Liquid Separation Condenser
- 默认刊物名称 2025年
- 作者机构：
1.青岛大学机电工程学院,山东省青岛市266071
2.海信冰箱有限公司,山东省青岛市266071
- 作者简介：
[ "王德昌，男，教授，青岛大学机电工程学院，0532 - 85952229， 。研究方向：换热器性能，吸收式制冷系统，热泵与储能。" ]
- 基金信息：国家自然科学基金(52106016)
DOI：
中图分类号： TB657.5;TK124收稿日期：2024-09-20，
修回日期：2024-12-03，
录用日期：2024-12-06，
- 稿件说明：
移动端阅览
钱蒲驰, 王德昌, 宋庆路, 等. 微通道分液冷凝器小流量下的换热性能与压降实验研究[J/OL]. 默认刊物名称, 2025.
QIAN Puchi, WANG Dechang, SONG Qinglu, et al. Experimental Study on Heat Transfer Performance and Pressure Drop of Microchannel Liquid Separation Condenser[J/OL]. Moren journal, 2025.
摘要
制冷剂质量流量1g/s以下的低质量流量下分液孔的大小和位置对分液冷凝器的性能有重要影响。对R600a在5种不同微通道分液冷凝器内的换热性能和压降进行了实验研究，对不同制冷剂质量流量、入口空气温度和速度、冷凝压力下5种分液冷凝器的换热性能和压降特性进行分析。根据实验结果，第二隔板开孔分液冷凝器换热性能优于第三隔板开孔分液冷凝器。制冷剂质量流量越大，分液冷凝器制冷剂侧压降减小越明显。制冷剂质量流量为0.6 g/s时，第二隔板开孔分液冷凝器制冷剂侧压降较未分液冷凝器降低21.28%；为0.4 g/s时，第二隔板开孔分液冷凝器制冷剂侧压降较未分液冷凝器降低17.29%。利用综合评价因子
P
EF
比较了不同开孔直径分液冷凝器的性能，分液孔径1.2 mm的分液冷凝器平均
P
EF
值为1.58，在所有分液冷凝器中最高，综合性能最好。
Abstract
The size and location of theseparating holes at low mass flow rates below 1 g/s have a significant impacton the performance of the liquid separation condenser. The heat transferperformance and pressure drop of R600a in five different microchannel liquidseparation condensers were experimentally studied
and the heat
transferperformance and pressure drop characteristics of five liquid separationcondensers under different refrigerant mass flow
inlet air temperature andvelocity
and condensing pressure were analyzed. According to the experimental results
the heat exchangeperformance of the second partition open-hole separating condenser is higherthan that of the third separator open-hole separating condenser. As the mass flow rate of therefrigerant increases
the refrigerant side pressure drop of the liquidseparation condenser decreases more significantly. When the refrigerant massflow rate is 0.6 g/s
the refrigerant side pressure drop of the secondseparator liquid separation condenser is 21.28% lower than that of the parallelflow condenser
and when the refrigerant mass flow rate is 0.4 g/s
the refrigerantside pressure drop of the second separator liquid separation condenser is17.29% lower than that of the parallel flow condenser. The performance of the liquidseparation condenser with different open-hole diameters was compared by usingthe comprehensive evaluation factor
P
EF
the average
P
EF
value of the liquid separation condenser with a separating hole size of 1.2 mm is 1.58
which is the highest among all liquid separation condensers and has the bestcomprehensive performance.
关键词
Keywords
references
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