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Simulation of Compression/Absorption Hybrid Heat Pump System using Industrial Wastewater Heat Source  

Baik Young-Jin (한국에너지기술연구원 미활용에너지연구센터)
Park Seong-Ryong (한국에너지기술연구원 미활용에너지연구센터)
Chang Ki-Chang (한국에너지기술연구원 미활용에너지연구센터)
Ra Ho-Sang (한국에너지기술연구원 미활용에너지연구센터)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.16, no.12, 2004 , pp. 1117-1125 More about this Journal
Abstract
In this study, in order to utilize the waste heat of industrial wastewater in the range of the relatively low temperature of 40～5$0^{\circ}C$ as a heat source, a hybrid heat pump system was considered by computer simulation method. In the simulation, an absorber, desorber and solution heat exchanger were modelled by UA values while a compressor and pump performance were specified by an isentropic efficiency. Simulation results show that the performance of hybrid heat pump can be up to 80% higher than that of conventional R134a heat pump when it makes a process hot water of 9$0^{\circ}C$ while the wastewater is cooled down to 2$0^{\circ}C$. As the absorber pressure increases, the system performance and deserter pressure increase with a favorable effect of a compressor discharge gas temperature drop.
Keywords
Hybrid heat pump; Waste heat recovery; Ammonia; Water; Temperature gradient;
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  • Reference
1 Stokar, M. and Trepp, Ch., 1987, Compression heat pump with solution circuit - Part1: Design and experimental results, Int. J. Refrig., Vol. 10, pp.87-96   DOI   ScienceOn
2 Kang, Y, Cho, H. and Hong, H., 2001, Hybrid GAX cycle: Performance improvement and low temperature applications, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 13, No. 10, pp.923-929
3 Jeon, K., Park, C. and Jung, D., 2001, Optimization study of the compression/absorption hybrid heat pump cycle, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 13, No.1, pp. 48-58
4 Yoon, J., Chae, J, Park, K., Kwon, O. and Oh, H., 1994, Computer simulation of the absorption cycle using ammonia as a refrigerant, Proceedings of the SAREK, pp. 126-130
5 Chang, Y, Jeong, E. and Kim, B., 2001, A numerical analysis of a revised VX absorption cooling cycle, Korean Journal of AirConditioning and Refrigeration Engineering, Vol. 13, No.6, pp. 505-513
6 Ahlby, L., Hodgett, D. and Berntsson, T., 1991, Optimization study of the compression/absorption cycle, Int. J. Refrig., Vol. 14, pp.16-23   DOI   ScienceOn
7 Jeong, S., 1995, A numerical simulation of air-cooled ammonia/water GAX absorption cooling cycle, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol.7, No.3, pp. 488-500
8 Kim, So, Kim, Yo, Peck, J. and Park, So, 2002, Cycle analysis of diffusion absorption refrigerator, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol.14, No. 10, pp.817-824
9 Jeong, J. Hwang, K., Hyun, S., Yoshikawa, Co, Saito, K. and Kawai, S., 2003, Performance enhancement of absorption chiller using NHrHzO with ejector, Proceedings of the SAREK, pp, 208-213