B216 高耐圧マイクロチャンネル積層型熱交換器の二相流伝熱流動特性(OS8 熱流動),動力エネルギーシステム部門20周年,次の20年への新展開)

概要

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In order to achieve high efficiency in small energy equipments such as fuel battery and heat pump system utilizing CO_2 refrigerant, it is required to develop a small and high efficient heat exchanger. In author's previous study, a prototype of stacked high pressure microchannel heat exchanger manufactured by diffusing bond technique has been proposed. In the present study, the objective is to reveal heat transfer properties and flow properties of the stacked high pressure microchannel heat exchanger when water and vapor are employed as low- and high-temperature test fluids, respectively. As the results, it is identified that the microchannel heat exchanger operates as a condenser with differential pressure at less than 20 kPa. Heat transfer quantity of the counter-flow heat exchanger is approximately 9000 W despite the weight is 310 g.
2010-06-20