Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Performance Characteristics of Water-Chilling Heat Pump Using CO2 on the Variation of Secondary Fluid Conditions

2차 유체 조건 변화에 대한 CO2용 수냉식 열펌프의 성능 특성에 관한 연구

  • 손창효 (부경대학교 기계공학부 대학원) ;
  • 오후규 (부경대학교 냉동공조공학)
  • Published : 2007.07.31
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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.

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References

  1. 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 https://doi.org/10.1016/S0140-7007(98)00017-6
  2. Hwang, Y., and Radermacher, R., 1998, Theoretical evaluation of carbon dioxide refrigeration cycle, HAVC＆R Research, Vol. 4, No. 3, pp. 245-263
  3. 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
  4. 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 https://doi.org/10.1016/S0140-7007(01)00011-1
  5. Halozan, H, and Rieberer, R., 2000, $CO_2$ as refrigerant-possible applications, 4th IIR-Gustav Lorentzen Conference, pp. 43-50
  6. 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
  7. 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 https://doi.org/10.1016/j.pecs.2003.09.002
  8. 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
  9. 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
  10. 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
  11. $CO_2$를 이용한 냉난방 시스템용 실외열교환 기 및 요소부품 개발.(1단계 최종 보고서), 2001, 산업자원부 차세대 기술개발사업, pp. 120-128
  12. Rozhentsev, A. and Wang, C. C., 2001, Some design features of a $CO_2$ air conditioner, Applied Thermal Engineering, Vol. 21, pp. 871-880 https://doi.org/10.1016/S1359-4311(00)00087-9
  13. 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

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