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Performance analysis of air-water dual source heat pump water heater with heat recovery

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Abstract

A new air-water dual source heat pump water heater with heat recovery is proposed. The heat pump system can heat water by using a single air source, a single water source, or air-water dual sources. The water is first pre-heated by waste hot water, then heated by the heat pump. Waste heat is recovered by first preheating the cold water and as water source of the heat pump. According to the correlated formulas of the coefficient of performance of air-source heat pump and water-source heat pump, and the gain coefficient of heat recovery-preheater, the formulas for the coefficient of performance of heat pump in six operating modes are obtained by using the dimensionless correspondence analysis method. The system characteristics of heat absorption and release associated with the heat recovery-preheater are analyzed at different working conditions. The developed approaches can provide reference for the optimization of the operating modes and parameters. The results of analysis and experiments show that the coefficient of performance of the device can reach 4–5.5 in winter, twice as much as air source heat pump water heater. The utilization of waste heat in the proposed system is higher than that in the system which only uses waste water to preheating or as heat source. Thus, the effect of energy saving of the new system is obvious. On the other hand, the dimensionless correspondence analysis method is introduced to performance analysis of the heat pump, which also has theoretical significance and practical value.

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References

  1. Chen Z S. Advanced Engineering Thermodynamics (in Chinese). Beijing: Higher Education Press, 2008

    Google Scholar 

  2. Hepbasli A, Kalinci Y. A review of heat pump water heating systems. Renew Sust Energ Rev, 2009, 13: 1211–1229

    Article  Google Scholar 

  3. Ito S, Miura N. Studies of a heat pump using water and air heat sources in parallel. Heat Transf Asian Res, 2000, 29: 473–490

    Article  Google Scholar 

  4. Chen Z S, Cheng W L, Hu P. Energy-Storage Heat Pump-Water Boiler Device for Hot Water Supply (in Chinese). China Patent, 01244858.3, 2002-07-24

  5. Zhu Y W, Ma Z G, Feng Y B, et al. Waste Heat Recovery Device for Shower Waste Water (in Chinese). China Patent, 02263931.4, 2003-10-12

  6. Zheng X Q. The Analysis and Research of Reclamation and Reuse of Public Bath Sewage (in Chinese). Dissertation of Masteral Degree. Dalian: Dalian university of technology, 2007

    Google Scholar 

  7. Huang K R, Wang L, Qing D F. Applicative research on heat pump technology used for recycling and reusing waste heat in bathroom (in Chinese). Refrig and Air-Cond, 2005, 5(1): 79–81

    Google Scholar 

  8. Zhang J, Zhang L J, Wang R Z, et al. System optimization calculation and experimental research of air sourced heat pump water heater (in Chinese). Aata Energiae Solaris Sinica, 2007, 28(3): 286–289

    Google Scholar 

  9. Jiang B, Chen Z S, Chen J X. Performance analysis of an air-source heat pump water heater under variable conditions (in Chinese). Heating Ventilating and Air Cond, 37(4): 70–73

  10. Zhao H B, Wu K. Characteristic analysis of heat pump water heater (in Chinese). J Yantai U (Natural Science and Engineering edition), 2009, 22(2): 141–146

    MATH  Google Scholar 

  11. Dong Y J, Huang D, Yuan X L. Numerical simulation and experimental investigation on air source heat pump chiller (in Chinese). Refrig and Air-Cond, 2006, 6(5): 52–57

    Google Scholar 

  12. Yang S M, Tao W Q. Heat Transfer (in Chinese). 4th edition. Beijing: Higher Education Press, 2006

    Google Scholar 

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Authors and Affiliations

  1. Department of Thermal Science & Energy Engineering, University of Science and Technology of China, Hefei, 230027, China

    ZeShao Chen & Peng Hu

  2. Xi’An JiaoTong University, Xi’an, 710049, China

    WenQuan Tao

  3. Huai’An HengXin Corporation, Huai’an, 223005, China

    YanWen Zhu

Authors
  1. ZeShao Chen
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  2. WenQuan Tao
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  3. YanWen Zhu
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  4. Peng Hu
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Correspondence to Peng Hu.

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Chen, Z., Tao, W., Zhu, Y. et al. Performance analysis of air-water dual source heat pump water heater with heat recovery. Sci. China Technol. Sci. 55, 2148–2156 (2012). https://doi.org/10.1007/s11431-012-4905-7

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  • DOI: https://doi.org/10.1007/s11431-012-4905-7

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