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Experimental Studies on the Performance Characteristics of Heat Exchangers of $CO_2$ Air Conditioning System for Vehicle  

Kim, Sung-Chul (Thermal Management System Research Center, KATECH)
Lee, Dong-Hyuk (Thermal Management System Research Center, KATECH)
Won, Jong-Phil (Thermal Management System Research Center, KATECH)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.17, no.1, 2009 , pp. 146-153 More about this Journal
Abstract
The performance characteristics of heat exchangers which consist of a gas cooler, an evaporator and an internal heat exchanger have been investigated at various operating conditions of $CO_2$ air conditioning system by experiments. The heat exchangers were designed for use in the vehicle $CO_2$ air conditioning system, when considering the characteristics of heat transfer and high pressure as $CO_2$ refrigerant. This paper studied the performance of heat exchangers at various compressor speeds and expansion valve openings, and quantified the heat transfer rates and pressure drops. Heat transfer rates at the gas cooler and the evaporator were 6.9 kW and 5.2 kW, respectively, when the compressor speed was 4000 rpm and refrigerant vapor quality at the evaporator outlet was 0.98. Therefore, this paper carried out that the heat exchangers were analyzed to achieve superior performance for the vehicle transcritical $CO_2$ cycle.
Keywords
Evaporator; Gas cooler; Internal heat exchanger; $CO_2$; Cooling capacity; Heat rejection;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 S.C. Kim, M.S. Kim and J.P. Won, "Experimental Studies on the Stack Cooling Performance Using a $CO_2$ Air Conditioning System in Fuel Cell Vehicles," Transactions of KSAE, Vol.16, No.3, pp.87-93, 2008
2 T. Tamura, Y. Yakumaru and F. Nishiwaki, "Experimental Study on Automotive Cooling and Heating Air Conditioning System Using $CO_2$ as a Refrigerant," Int. J. Refrig., Vol.28, pp.1302-1307, 2005   DOI   ScienceOn
3 S.C. Kim, D.H. Lee, H.S. Lee, J.P. Won, D.W. Lee and W.S. Lee, "Studies on the Performance Characteristics of an Electronically Controlled CO$_2$ Air Conditioning System for Fuel Cell Electric Vehicles," Transactions of KSAE, Vol.16, No.2, pp.150-157, 2008
4 A. Rozhentsev and C. C. Wang, "Some Design Features of a $CO_2$ Air Conditioner," Applied Thermal Engineering, Vol.21, pp.871-880, 2001   DOI   ScienceOn
5 R. McEnaney, D. Boewe, J. Yin, Y.C. Park, C.W. Bullard and P.S. Hrnjak, "Experimental Comparison of Mobile A/C Systems When Operated with Transcritical $CO_2$ Versus Conventional R134a," Proc. International Refrigeration Conference at Purdue, pp.145-150, 1998
6 M. Park, S.C. Kim, D.W. Kim and M.S. Kim, "Studies on the Steady State and Dynamic Characteristics of a Carbon Dioxide Air-conditioning System for Vehicles," KSME, Vol.31, No.6, pp.531-538, 2007   DOI
7 EU News, Parliament opts for containment on F-gases, http://www.euractiv.com
8 H. Gentner, "Passenger car air conditioning using carbon dioxide as refrigerant," In: Proc. of the IIR-Gustav Lorentzen Conference on Natural Working Fluids, Oslo, Norway, pp. 303-313, 1998
9 S.C. Kim, J.C. Park, M.S. Kim and J.P. Won, "Performance Evaluation of a CO2 Heat Pump System for Fuel Cell Vehicles," Transactions of KSAE, Vol.16, No.1, pp.37-44, 2008
10 J. Yin, Y.C. Park, D. Boewe, R. McEnaney, A. Beaver, C.W. Bullard and P.S. Hrnjak, "Experimental and Model Comparison of Transcritical CO2 Versus R134a and R410 System Performance," Proc. of the IIR-Gustav Lorentzen Conference on Natural Working Fluids, Oslo, Norway, pp.376-387, 1998
11 J. S. Brown, S. F. Yana-Motta and P. A. Domanski, "Comparative Analysis of an Automotive Air Conditioning Systems Operating with $CO_2$ and R134a," Int. J. Refrig., Vol.25, pp.19-32, 2002   DOI   ScienceOn