Kyushu University Faculty of Engineering
Kyushu University Faculty of Engineering
Kyushu University Faculty of Engineering
Kyushu University Faculty of Engineering
Kyushu University Faculty of Engineering
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
宇宙利用シンポジウム 第24回 平成19年度
雑誌名(英)
Space Utilization Research: Proceedings of the Twenty-fourth Space Utilization Symposium
ページ
198 - 201
発行年
2008-03
抄録（英）
Heat generation density from semiconductor devices increases with the rapid development of electric technology. The cooling system using boiling two-phase phenomena attracts much attention because of its high heat removal potential. The technology can be applied to the cooling systems in space. Experiments on the increase of CHF (Critical Heat Flux) for flow boiling in narrow channels by improved liquid supply were conducted for the development of high-performance space cold plates. A structure of narrow heated channel between parallel plates with an unheated auxiliary channel was devised and tested by using water for different combinations of gap sizes and volumetric flow rates. Three kinds of liquid supply methods were conducted and the data were compared. CHF values of 2 x 10(exp 6) W/sq m were obtained for the improved configuration. One of liquid supply methods, where liquid is supplied to both of the main heated channel and the auxiliary unheated channel keeping the exit of the auxiliary unheated channel closed, obtains the highest CHF at total volumetric flow rate more than 1.80 l/min and for a gap size of 2 mm.
狭あい流路内強制流動沸騰を利用した宇宙用高性能コールドプレートの開発
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