@article{Cai2026, 
author = {Huayu Cai and Yidong Fang and Di Lu and Chenhan Jiang},
title = {Experimental Investigation on Flow Boiling Heat Transfer of R1233zd(E) in Parallel Microchannel with Variable Width},
year = {2026},
journal = {Journal of Refrigeration},
volume = {47},
number = {2},
pages = {95-102},
keywords = {subcooled flow boiling, parallel microchannel, boiling heat transfer, heat transfer characteristic},
url = {https://www.sciopen.com/article/10.12465/issn.0253-4339.20241107002},
doi = {10.12465/issn.0253-4339.20241107002},
abstract = {The subcooled flow boiling heat transfer of R1233zd(E) in uniform- and variable-width parallel microchannels was investigated experimentally. The heat transfer characteristics of 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 flux was 1263 kg/(m2·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/m2, 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%.}
}