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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
方奕栋,男,硕士生导师,上海理工大学能源与动力工程学院,制冷与低温工程研究所,E-mail:yidongfang@usst.edu.cn。研究方向:电池/电子器件高效散热。
收稿日期:2024-11-07,
修回日期:2024-11-27,
录用日期:2024-12-11,
网络出版日期:2025-09-29,
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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.
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
2
·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
2
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%。
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
2
·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
2
, 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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