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.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4943-9
PROCEEDINGS PAPER
The Development of Performance Prediction Methods for an Automotive CO2 Air Conditioning Cycle Available to Purchase
Masafumi Katsuta,
Masafumi Katsuta
Waseda University, Tokyo, Japan
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Takahiro Oshiro,
Takahiro Oshiro
Waseda University, Tokyo, Japan
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Akira Kaneko,
Akira Kaneko
Waseda University, Honjoh, Saitama, Japan
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Sangchul Bae,
Sangchul Bae
Waseda University, Honjoh, Saitama, Japan
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Shunji Komatsu,
Shunji Komatsu
Waseda University, Tokyo, Japan
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Yohei Ohno
Yohei Ohno
Waseda University, Tokyo, Japan
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Masafumi Katsuta
Waseda University, Tokyo, Japan
Takahiro Oshiro
Waseda University, Tokyo, Japan
Akira Kaneko
Waseda University, Honjoh, Saitama, Japan
Sangchul Bae
Waseda University, Honjoh, Saitama, Japan
Shunji Komatsu
Waseda University, Tokyo, Japan
Yohei Ohno
Waseda University, Tokyo, Japan
Paper No:
IHTC14-22317, pp. 129-134; 6 pages
Published Online:
March 1, 2011
Citation
Katsuta, M, Oshiro, T, Kaneko, A, Bae, S, Komatsu, S, & Ohno, Y. "The Development of Performance Prediction Methods for an Automotive CO2 Air Conditioning Cycle." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 8. Washington, DC, USA. August 8–13, 2010. pp. 129-134. ASME. https://doi.org/10.1115/IHTC14-22317
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