Co-Simulation-Based Research on Microchannel Condensers with Liquid Separation

Lian Zekai; Zheng Xiaobin; Chen Jianyong; Chen Ying; Luo Xianglong; Liang Yingzong; He Jiacheng; Yang Zhi

doi:10.12465/issn.0253-4339.20260125001

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Co-Simulation-Based Research on Microchannel Condensers with Liquid Separation

更新时间：2026-06-16

- Co-Simulation-Based Research on Microchannel Condensers with Liquid Separation
- Journal of Refrigeration Pages: 1-8(2026)
- 作者机构：
  
  1.广东工业大学材料与能源学院广州 510006
  2. 广东省功能软凝聚态物质重点实验室广州 510006
- 作者简介：
  
  Chen Jianyong， male， professor， School of Materials and Energy， Guangdong University of Technology， Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter， 86-13544552233， E-mail： jianyong@gdut.edu.cn. Research fields： optimization of air conditioning heat pump system and enhancement of heat transfer technology.
- 基金信息：
  
  the National Natural Science Foundation of China(52476003;52376003)
- DOI：10.12465/issn.0253-4339.20260125001
  CLC： TB61⁺1;TB657.5
- Received：25 January 2026，
  
  Revised：2026-03-03，
  
  Accepted：16 March 2026，
  
  Online First：16 June 2026，
- 稿件说明：
移动端阅览
连泽凯，郑晓斌，陈健勇，等. 基于联合仿真的微通道分液冷凝器研究［J］. 制冷学报，XXXX，XX（XX）：1-8.

Lian Zekai，Zheng Xiaobin，Chen Jianyong，et al. Co-Simulation-Based Research on Microchannel Condensers with Liquid Separation［J］. Journal of Refrigeration，XXXX，XX（XX）：1-8.
连泽凯，郑晓斌，陈健勇，等. 基于联合仿真的微通道分液冷凝器研究［J］. 制冷学报，XXXX，XX（XX）：1-8. DOI： 10.12465/issn.0253-4339.20260125001.

Lian Zekai，Zheng Xiaobin，Chen Jianyong，et al. Co-Simulation-Based Research on Microchannel Condensers with Liquid Separation［J］. Journal of Refrigeration，XXXX，XX（XX）：1-8. DOI： 10.12465/issn.0253-4339.20260125001.

摘要

分液冷凝器由气液分离单元与换热管组成，二者存在强耦合：分离性能影响换热管的传热与流动，而换热管压降是分离的主要驱动力，但现有研究均未考虑该关联。本文考虑分液效果与管程压降的相互影响，提出耦合联箱-小孔分离单元三维CFD模型与换热管一维模型的联合仿真，获得微通道分液冷凝器（LMC）的局部和整体性能并与常规微通道冷凝器（CMC）进行对比，揭示气液分离对换热性能的影响机制。结果表明，联合仿真模型预测结果与实验结果较为一致。虽然LMC的气液分离效率仅为36.2%，但LMC相对于CMC的综合性能提升了16.6%。LMC第三管程传热系数减小，导致换热量下降了276.2 W，其压降下降主要发生在第二管程和第三管程。要充分发挥分液冷凝的效果，需对分液隔板结构和管程布置协同设计。

Abstract

A liquid-separation condenser consists of a vapor-liquid separation unit and heat-exchange tubes， which are strongly coupled. The separation performance governs the heat transfer and flow behavior in the tubes， while the pressure drop across the tubes serves as the primary driving force for separation. However， existing studies have yet to account for this coupling. This study proposes a co-simulation model that couples a three-dimensional computational fluid dynamics （CFD） model of the header-orifice separation unit with a one-dimensional model of heat-transfer tubes by accounting for the mutual influence between the separation effect and tube-side pressure drop. The local and overall performances of the liquid-separation microchannel condenser （LMC） is obtained. A comparison with a conventional microchannel condenser （CMC） is conducted to reveal the mechanism of the effects of vapor-liquid separation on heat transfer performance. The results show that the predictions of the co-simulation model are in agreement with the experimental data. Although the vapor-liquid separation efficiency of the LMC is only 36.2%， the overall performance of the LMC is improved by 16.6% compared with that of the CMC. Moreover， the decreased heat-transfer coefficient in the third tube pass of the LMC leads to a 276.2 W reduction in the heat transfer rate， whereas the pressure drop reduction of the LMC occurs mainly in the second and third tube passes. To fully realize the benefits of liquid-separation condensation， the orifice-baffle structure and the tube pass arrangement must be simultaneously optimized.

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