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http://dx.doi.org/10.5762/KAIS.2019.20.1.419

Experimental study on cooling performance characteristics of hybrid refrigeration system in a heavy duty vehicle  

Lee, Ho-Seong (Thermal Management System Research Center, KATECH)
Jeon, Hanbyeol (Thermal Management System Research Center, KATECH)
Kim, Jung-Il (Technical sales dept., CEDIC)
Lee, Moo-Yeon (Department of Mechanical Engineering, Dong-A University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.1, 2019 , pp. 419-425 More about this Journal
Abstract
The objective of this study was to investigate the cooling performance characteristics of a hybrid refrigeration system in a heavy duty vehicle. The tested hybrid refrigeration system had additionally an electric compressor besides the present mechanical compressor for selective use according to the operating conditions. The applied electric compressor was a scroll type and with 18.0 cc displacement. In order to analyze the performance characteristics of the hybrid refrigeration system with respect to the cooling capacity and Coefficient of Performance (COP), other components, including two different types of compressors, were installed and tested under various operating conditions such as compressor speed and air flow rate of the evaporator. When the electric compressor was operated at 4,500 rev/min, the cooling capacity was about 4.0kW and COP was 3.5. When the mechanical compressor was operated, whereas the cooling capacity was higher than the electric controlled compressor, COP was lower due to the larger displacement and higher power consumption. To analyze the hybrid system operating characteristics due to reasonable cooling capacity with electric compressor operation, the mechanical compressor and electric compressor were operated by turns every 10 minutes under certain system operating conditions. Because surge pressure occurred when both compressors were switched on, the operating strategy required some time to balance the system pressure.
Keywords
Cooling performance; Dual compressor; Heavy duty vehicle; Hybrid refrigeration system; Operating modes;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 H. S. Lee, J. P. Won, C. W. Cho, T. K. Lim, H. B. Jeon, M. S. Han, J. G. Kim, Y. C. Kim, "Experimental study on performance characteristics of the hybrid cooling system with rotary type electric controlled compressor in a commercial vehicle", KSAE annual conference(KSAE17-S0372), pp. 858-863, 2017.
2 K. W. Han, S. G. Kim, C. H. Lee, M. H. Choi, Y. G. Jung, Y. C. Lim, "Commercial vehicle anti-start air conditioner compressor system using a power conversion unit", Journal of the korean institute of illuminating and electrical installation engineers, pp. 96-108, 2015. DOI: https://doi.org/10.5207/JIEIE.2015.29.6.096
3 K. W. Han, S. G. Kim, Y. G. Jung, Y. C. Lim, "Development of the anti-start air conditioner compressor resonant DC/DC converter for commercial vehicle", The transactions of korean institute of power electronics, Vol 19, No. 6, pp. 557-563, 2014. DOI : https://dx.doi.org/10.1155/2013/282313   DOI
4 K. W. Han, S. G. Kim, C. H. Lee, M. H. Choi, Y. G. Jung, Y. C. Lim, H. H. Cho, "Development of the anti-start air conditioner system power conversion unit for commercial vehicle", Power electronics annual conference, pp. 139-140, 2015.
5 H. S. Lee, J. P. Won, C. W. Cho, T. K. Lim, H. B. Jeon, M. S. Han, J. I. Kim, Y. C. Kim "Experimental study on performance characteristics of the hybrid cooling system with rotary type electric controlled compressor in a commercial vehicle", KSAE annual conference, pp. 858-863, 2017.
6 I. Y. Park, J. B. Won, H. B. Goh, K. S. Lim, "Optimum control of A/C system for hybrid car by electric compressor", KSAE annual conference, pp. 2155-2159, 2011.
7 H. S. Lee, M. Y. Lee, "Cooling performance characteristics on mobile air conditioning system for hybrid electric vehicles", Advances in Mechanical Engineering DOI : https://dx.doi.org/10.1155/2013/282313