J054064 高耐圧マイクロチャンネル積層型熱交換器の構造最適化([J05406]マイクロ・ナノスケールの熱流体現象(6))

概要

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Development of a small and high efficient heat exchanger, which is utilized in a fuel battery and a heat pump system for CO2 refrigerant and so on, is strongly required. In authors' previous studies, the prototype of the stacked high pressure resistance microchannel heat exchanger manufactured with diffusing bond technique has been proposed. The objective of the present study is to clarify flow and heat-transfer characteristics of new type counter-flow microchannel heat exchangers which have rectangular cross-sectional channels with 250x250 1.tm and 500x500 1.1,m and to clarify the heat-transfer mechanism with condensation in a capillary glass tube. As the results, it is found that heat transfer rate of the present heat exchanger is higher than that of the existing heat exchanger, although the device is one hundred times smaller than the existing one. It is found that heat transfer rate of a capillary glass tube is higher than that of the device. Therefore, it is expected that the performance of the heat exchanger becomes higher.
一般社団法人日本機械学会の論文
2011-09-11