E115 ワイヤー型ジュール・トムソン型マイクロ冷凍機に関する研究(OS1 マイクロエネルギー変換)

概要

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A prototype flexible Joule-Thomson micro-refrigerator was fabricated and its cooling power was examined. The micro-refrigerator uses N_2, C_2H_4, CO_2 as a working gas and it consists mainly of heat exchanger (The outside diameter of outer tube is 0.9 mm and that of inner tube is 0.4 mm. The length of the heat exchanger is 450mm) and evaporator (The inner diameter of the capillary is 0.1 mm). The cooling power of 100 mW at evaporator temperature of 277 K was attained at the inlet and outlet gas (CO2) pressures of 5.0 MPa and 0.1 MPa, respectively. To understand the cooling performance, numerical analysis of heat exchanger has been done and the effects of mass flow rate and dimension of heat exchanger on temperature profiles and effectiveness were examined.
一般社団法人日本機械学会の論文
2009-06-28