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http://dx.doi.org/10.5916/jkosme.2007.31.5.543

Performance Characteristics of Water-Chilling Heat Pump Using CO2 on the Variation of Secondary Fluid Conditions  

Son, Chang-Hyo (부경대학교 기계공학부 대학원)
Oh, Hoo-Kyu (부경대학교 냉동공조공학)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.31, no.5, 2007 , pp. 543-551 More about this Journal
Abstract
The performance characteristics of water-chilling heat pump using $CO_2$ with respect to variation of inlet temperature and mass flow rate of secondary fluid was investigated experimentally. An experimental apparatus is consisted of a compressor, a gas cooler, an expansion valve, an evaporator and a liquid receiver. All heat exchangers used in the test rig are counter-flow-type heat exchangers with concentric dual tubes, which ate made of copper. The gas cooler and the evaporator consist of 6 and 4 straight sections respectively arranged in parallel, each has 2.4 m length. The experimental results were summarized as the followings : As inlet temperature of secondary fluid in the gas cooler increases from $10^{\circ}C$ to $40^{\circ}C$, the compressor work, heating capacity and heating COP were varied to 37.8%, -13%, -35.9%, respectively. The heating capacity, compressor work, heating COP were turned into 23.3%, 6.42%, 13.1%, respectively when ass flow rate of secondary fluid in the evaporator increases from 70 g/s to 150 g/s. The above tendency is similar with performance variation with respect to temperature variation of secondary fluid in the conventional vapor compression cycle.
Keywords
Carbon dioxide; Design of heat pump; Performance characteristics; Secondary fluid;
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  • Reference
1 Hwang, Y., and Radermacher, R., 1998, Theoretical evaluation of carbon dioxide refrigeration cycle, HAVC＆R Research, Vol. 4, No. 3, pp. 245-263
2 Kim, M., Pettersen, J. and Bullard, C., 2004, Fundamental process and system design issues in $CO_2$ vapor compression systems, Progress in Energy and Combustion Science, Vol. 30, pp. 119-174   DOI   ScienceOn
3 Cho, H., Ryu, C. and Kim, Y., 2004, Experimental study on the performance of a $CO_2$ cycle in the cooling mode, Proceeding of the SAREK '04 Winter Annual Conference, pp. 571-576
4 Rozhentsev, A. and Wang, C. C., 2001, Some design features of a $CO_2$ air conditioner, Applied Thermal Engineering, Vol. 21, pp. 871-880   DOI   ScienceOn
5 McLinden, M. O., Klein, S. A., Lemmon, E. W., Peskin, A. P., 1998, NIST Thermodynamic Properties and Refrigerant Mixtures Database (REFPROP), Version 6.01, National Institute of Standards and Technology, Gaithersburg, MD, U.S.A
6 Rieberer, R., Gassler, M. and Halozan, H., 2000, 'Control of $CO_2$ heat pumps', Proceedings of the 4th IIR-Gustav Lorentzen Conference on Natural Working Fluids at Purdue, 2000 July 25-28; West Lafayette, USA, pp. 75-82
7 $CO_2$를 이용한 냉난방 시스템용 실외열교환 기 및 요소부품 개발.(1단계 최종 보고서), 2001, 산업자원부 차세대 기술개발사업, pp. 120-128
8 Halozan, H, and Rieberer, R., 2000, $CO_2$ as refrigerant-possible applications, 4th IIR-Gustav Lorentzen Conference, pp. 43-50
9 Neksa, P., Rekstad, H., Zakeri, G. R. and Schiefloe, P. A., 1998, '$CO_2$ heat pump water heater: characteristics, system design and experimental results.', International Journal of refrigeration, Vol. 21, No. 3, pp. 172-179   DOI   ScienceOn
10 Liao, S., Jakobsen, A., 1998, 'Optimal heat rejection pressure in transcritical carbon dioxide air conditioning and heat pump system.', IIF-IIR-Sections B and E-Oslo, Norway-1998. pp. 301-310
11 Hafner, A., 2000, Experimental study on heat pump operation of prototype $CO_2$ mobile air conditionins system, 4th IIR-Gustav Lorentzen Conference, pp. 177-184
12 Cho, H., Ryu, C. and Kim, Y., 2004, Experimental study on the cooling performance of a $CO_2$ cycle with internal heat exchanger, Proceeding of the SAREK '04 Winter Annual Conference, pp. 571-576
13 Brown, S. J., Yana-Motta, F. S., Domanski, A. P., 2002, 'comparative analysis of an auto motive air conditioning systems operating with $CO_2$ and R134a.', International Journal of refrigeration, 25(2002), pp. 19-32   DOI   ScienceOn