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第27回宇宙利用シンポジウム (2011年1月24日-25日, 宇宙航空研究開発機構宇宙科学研究所相模原キャンパス), 相模原市, 神奈川県, The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, Investigation of mechanisms in nucleate boiling under microgravity conditions is essential for the development of the cooling systems handling a large amount of waste heat. A transparent heating surface with multiple arrays of 88 thin film temperature sensors and mini-heaters was developed for the clarification of boiling heat transfer mechanisms in microgravity. To investigate gravity effects on the relation between local heat transfer coefficients and behaviors of microlayer underneath attached bubbles, images of liquid-vapor behaviors and corresponding data of local heat transfer were obtained simultaneously in microgravity pool boiling experiments by ESA parabolic flight campaign. The present paper reports the analysis of the experimental results., 著者人数: 11, 人形態: カラー図版あり, Number of authors: 11, Physical characteristics: Original contains color illustrations, 資料番号: AA0065129034

第27回宇宙利用シンポジウム (2011年1月24日-25日, 宇宙航空研究開発機構宇宙科学研究所相模原キャンパス), 相模原市, 神奈川県, The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, Boiling heat transfer is one of promising means to be applied for the thermal management systems handling a large amount of heat in space. However, gravity effects on the two-phase flow phenomena and corresponding heat transfer characteristics have not been clarified in detail. Experiments on flow boiling heat transfer onboard "KIBO" in international space station were proposed to clarify the flow boiling heat transfer phenomena under microgravity connditions. Ground tests by using a Bread Board Model (BBM) were conducted to verify the performance of a heated test section., 著者人数: 13人, 形態: カラー図版あり, Number of authors: 13, Physical characteristics: Original contains color illustrations, 資料番号: AA0065129035

第26回宇宙利用シンポジウム(2010年1月25日-26日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス), The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan), Boiling is one of the efficient modes of heat transfer due to phase change, and is regarded as promising means to be applied for the thermal management systems handling a large amount of waste heat. However, gravity effects on the two-phase flow phenomena and corresponding heat transfer characteristics have not been clarified in detail. ISS experiments on boiling and two-phase flow under microgravity conditions are proposed to clarify both of heat transfer and flow characteristics under microgravity conditions. To verify the feasibility of ISS experiments on boiling and two-phase flow, the Bread Board Model (BBM) is assembled and its performance and the function of components installed in a test loop are examined., 形態: カラー図版あり, 共催: 日本学術会議, 著者人数: 12人, Physical characteristics: Original contains color illustrations, joint hosting: The Science Council of Japan, 資料番号: AA0064730016

第26回宇宙利用シンポジウム(2010年1月25日-26日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス), The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan), Investigation of mechanisms in nucleate boiling under microgravity conditions is essential for the development of the cooling systems handling a large amount of waste heat. A transparent heating surface with multiple arrays of 88 thin film temperature sensors and mini-heaters was developed for the clarification of boiling heat transfer mechanisms in microgravity. To investigate gravity effects on the relation between local heat transfer coefficients and behaviors of microlayer underneath attached bubbles, images of liquid-vapor behaviors and corresponding data of local heat transfer were obtained simultaneously in microgravity pool boiling experiments by ESA parabolic flight campaign. The present paper reports the preliminary analysis of the experimental results., 形態: カラー図版あり, 共催: 日本学術会議, 著者人数: 11人, Physical characteristics: Original contains color illustrations, joint hosting: The Science Council of Japan, 資料番号: AA0064730017