Experimental Investigation on Flow Boiling Heat Transfer of R1233zd（E） in a Variable Width Parallel Microchannel

Cai Huayu; Fang Yidong; Lu Di; Jiang Chenhan

doi:10.12465/issn.0253-4339.20241107002

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Experimental Investigation on Flow Boiling Heat Transfer of R1233zd（E） in a Variable Width Parallel Microchannel

更新时间：2025-09-29

- Experimental Investigation on Flow Boiling Heat Transfer of R1233zd（E） in a Variable Width Parallel Microchannel
- Journal of Refrigeration Pages: 1-8(2025)
- 作者机构：
  
  1.上海理工大学能源与动力工程学院上海 200093
  2. 上海市动力工程多相流动与传热重点实验室上海 200093
- 作者简介：
- 基金信息：
- DOI：10.12465/issn.0253-4339.20241107002
  CLC： TB61⁺1;TK124
- CSTR：XXXXX.XX.XXX.20241107002
- Received：07 November 2024，
  
  Revised：2024-11-27，
  
  Accepted：11 December 2024，
  
  Published Online：29 September 2025，
- 稿件说明：
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蔡华宇,方奕栋,卢娣等.R1233zd（E）在非等宽并联微通道内的流动沸腾传热实验研究[J].制冷学报,

Cai Huayu,Fang Yidong,Lu Di,et al.Experimental Investigation on Flow Boiling Heat Transfer of R1233zd（E） in a Variable Width Parallel Microchannel[J].Journal of Refrigeration,
蔡华宇,方奕栋,卢娣等.R1233zd（E）在非等宽并联微通道内的流动沸腾传热实验研究[J].制冷学报, DOI：10.12465/issn.0253-4339.20241107002. CSTR： XXXXX.XX.XXX.20241107002.

Cai Huayu,Fang Yidong,Lu Di,et al.Experimental Investigation on Flow Boiling Heat Transfer of R1233zd（E） in a Variable Width Parallel Microchannel[J].Journal of Refrigeration, DOI：10.12465/issn.0253-4339.20241107002. CSTR： XXXXX.XX.XXX.20241107002.

摘要

对R1233zd（E）在等宽和非等宽并联微通道内的过冷流动沸腾进行了实验研究，在不同过冷度、质量通量及热流密度条件下对比分析了2种通道结构的传热特性。实验结果表明：非等宽并联微通道中核态沸腾的起始（ONB）更早，并且可以保持较低的壁温。质量流量为1 263 kg/（m

·s）时，非等宽并联微通道的壁面过热度比等宽并联微通道低3.2 ℃。同时，非等宽并联微通道的整体传热性能更优越。当热流密度为150 kW/m

时，非等宽并联微通道的传热系数（HTC）比等宽并联微通道增加了30%~50%。此外，非等宽并联微通道的两相压降高于等宽并联微通道，最大增幅为61%。

Abstract

The subcooled flow boiling heat transfer of R1233zd（E） in uniform- and variable-width parallel mic

rochannels was investigated experimentally. The heat transfer characteristics of the two channel structures were analyzed and compared under different subcooling， mass-flux， and heat-flux conditions. The experimental results reveal that the onset of nucleate boiling （ONB） of the variable-width parallel microchannel occurred earlier and that the wall temperature could be maintained at a lower value. In addition， the overall heat transfer characteristics of the variable-width microchannel were better than those of the uniform-width microchannel. When the mass flow rate was 1 263 kg/（m

·s）， the wall superheat of the variable-width parallel microchannel was 3.2 ℃ lower than that of the uniform-width parallel microchannel. When the heat flux was 150 kW/m

， the coefficient of heat transfer （HTC） of the variable-width parallel microchannel increased by 30%-50% compared with that of the uniform-width parallel microchannel. Moreover， the two-phase pressure drop in the variable-width parallel microchannels was higher than that in the uniform-width parallel microchannels， with a maximum increase of 61%.

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references

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