The development of peformance prediction methods for an automotive CO 2 air conditioning cycle

Masafumi Katsuta*, Takahiro Oshiro, Akira Kaneko, Sangchul Bae, Shunji Komatsu, Yohei Ohno

*この研究の対応する著者

    研究成果: Conference contribution

    抄録

    In previous researches, we have been focusing on the performance of the each element heat transfer and hydraulic performance of refrigeration cycle. Experimental investigations have been repeated several times and, finally, we have substantial data base including the effect of lubricant oil. Moreover, the mal-distribution of two-phase in an evaporator can be also predicted from the experimental data base. Under these circumstances, this study is intended to effectively put the construction of an automotive CO2 air conditioning system into practical design use through the simulation using the above-mentioned data base. This paper describes the refrigeration cycle performance prediction of each element (e.g. an evaporator, a gas-cooler, and so on) by a simulation using substantial data base and various available correlations proposed by us and several other researchers. In the performance prediction model of heat exchangers, local heat transfer and flow characteristics are considered and in addition, the effects of lubricant oil on heat transfer and pressure drop are duly considered. The comparison is also made between simulation results and bench test results using a real automotive air conditioning system. Finally, the developed simulation method can predict the cooling ability successfully within ±5%. By incorporating the lubricant oil effect, the simulation results are improved to ±5% and ±15% for the cooling ability and pressure drop respectively.

    本文言語English
    ホスト出版物のタイトル2010 14th International Heat Transfer Conference, IHTC 14
    ページ129-134
    ページ数6
    8
    DOI
    出版ステータスPublished - 2010
    イベント2010 14th International Heat Transfer Conference, IHTC 14 - Washington, DC
    継続期間: 2010 8 82010 8 13

    Other

    Other2010 14th International Heat Transfer Conference, IHTC 14
    CityWashington, DC
    Period10/8/810/8/13

    ASJC Scopus subject areas

    • 流体および伝熱

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