制冷学报2026，Vol.47Issue(2)：85-94,10.DOI:10.12465/issn.0253-4339.20240920003
微通道分液冷凝器小流量下的传热性能与压降实验研究
Experimental Study on Heat Transfer Performance and Pressure Drop of Microchannel Condenser with Liquid Separation
摘要
Abstract
The size and location of the separating holes at low mass flow rates(<1 g/s)have a significant impact on the performance of condensers with liquid separation.The heat transfer performance and pressure drop of R600a in five microchannel condensers with liquid separation were studied experimentally.Additionally,the heat transfer performance and pressure drop characteristics of the five liquid separation condensers under different refrigerant mass flows,inlet air temperatures and velocities,and condensing pressures were analyzed.According to the experimental results,the heat-exchange performance of the condenser with liquid separation orifice at the second baffle was better than that at the third baffle.As the mass flow rate of the refrigerant increased,the refrigerant-side pressure drop in the liquid separation condenser decreased significantly.When the refrigerant mass flow rate was 0.60 g/s and 0.40 g/s,the refrigerant-side pressure drop of the condenser with liquid separation orifice on the second baffle was 21.28%and 17.29%lower,respectively,than that of the baseline condenser without liquid separation.The performances of the liquid separation condensers with different orifice diameters were compared using the comprehensive evaluation factor PEF.The average PEF value of the liquid separation condenser with an orifice size of 1.2 mm was 1.58.This was the highest among all the liquid separation condensers and yielded the best comprehensive performance.关键词
分液冷凝器/分液孔径/分液隔板位置/传热性能/压降Key words
liquid separation condenser/separating orifice size/separating orifice position/heat transfer performance/pressure drop分类
通用工业技术引用本文复制引用
钱蒲驰,王德昌,宋庆路,周赛,阎志建..微通道分液冷凝器小流量下的传热性能与压降实验研究[J].制冷学报,2026,47(2):85-94,10.基金项目
国家自然科学基金(52106016)资助项目.The project was supported by the National Natural Science Foundation of China(No.52106016).本文受山东省青年科技人才托举工程项目(SDAST2024QTA048)资助.The project was supported by Young Talent of Lifting Engineering for Science and Technology in Shandong,China(No.SDAST2024QTA048). （52106016）
