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Abstract: Experiments are conducted to investigate the flow boiling
heat transfer characteristics of refrigerant mixture of R32 and R134a in
microchannel tube and mini-channel tubes. The results show that the
mass quality and mass flux have nearly no effects on the flow boiling
heat transfer, but the heat flux affects the flow boiling heat transfer
greatly, results also show that nucleation boiling heat transfer
dominates over most of the heat flux range. Compared with the mini-scale
tube, flow boiling heat transfer in microchannel tube is an effective
method of achieving high heat transfer coefficient.
Key words: Microchannel Flow boiling Non-azeotropic refrigerant
mixture
CLC No: TK124
上海市重点学科建设基金和上海市高等学校科学技术发展基金(01F09)资助项目.
Received 20040416, received in revised form 20040920
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