Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Experimental Investigation on the Optimal Design of Water Tank for Domestic Hot Water Supply using PEMFC Co-generation System

가정용 고분자 전해질 연료전지 열병합 발전시스템의 급탕 적용을 위한 온수 저장조의 최적 설계에 관한 실험적 연구

  • Hwang, Yu-Jin (Department of Mechanical Engineering, Pusan National University) ;
  • Ahn, Young-Chull (School of Architecture, Pusan National University) ;
  • Cheong, Seong-Ir (Department of Mechanical Engineering, Pusan National University) ;
  • Jin, Keun-Ho (Digital Appliance Research Laboratory, LG Electronics) ;
  • Lee, Jae-Keun (Department of Mechanical Engineering, Pusan National University)
  • Published : 2008.06.10
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Abstract

There are many attempts to use a fuel cell system as a residential power generation system. The purpose of this study is to investigate the optimal design of a water tank for a hot water system when the fuel cell co-generation system is combined with a domestic hot water supply system. The demands of hot water supply per month per home are investigated in Busan for a year. It showed somewhat large differences between the actual demand and the designed demand of hot water, but the actual capacity of hourly averaged hot water demands is analyzed as $60{\ell}/h$ in this study based on the actual demand. The experiments are performed in the various inlet and outlet locations of nozzles, and the hot water consumption rates. The experimental results are showed that the optimal capacity of the water tank is $200{\ell}$ when the thermal efficiency, the storing capacity of hot water and the space for installation are considered.

Keywords

References

  1. Larminie, J. and Dicks, A., 2003, Fuel cell systems explained, 2nd ed., John Wiley and Sons Inc., West Sussex. pp. 1-118
  2. Lutz, A. E., Larson, R. S. and Keller, J. O., 2002, Thermodynamic comparison of fuel cells to the Carnot cycle, International Journal of Hydrogen Energy, Vol. 27, No. 10, pp. 1103-1111 https://doi.org/10.1016/S0360-3199(02)00016-2
  3. Tajima, O., Oda, K., Hatayma R., Yugawa, R. and Ouki, T., 2001, Solid polymer type fuel cell power generating device, Japan Patent, 2001-005782
  4. Tajima, O., Tajima, K., Shindo, K., Yamamoto, S. and Oda, K., 2000, Exhaust heat recovery system of solid polymer type fuel cell, Japan Patent, 2000-014719
  5. Hamada, Y., Nakamura, M., Kubota, H., Ochifuji, K., Murase, M. and Goto, R., 2005, Field performance of a polymer electrolyte fuel cell for a residential energy system, Renewable and Sustainable Energy Reviews, Vol. 9, No. 4, pp. 345-362 https://doi.org/10.1016/j.rser.2004.04.005
  6. Lavan, Z. and Thompson, J., 1977, Experimental study of thermally stratified hot water storage tank, Solar Energy, Vol. 19, pp. 519-524 https://doi.org/10.1016/0038-092X(77)90108-6
  7. Shin, M. S., Kim, H. S., Jang, D. S., Lee, S. N., Lee, Y. S. and Yoon, H. G., 2004, Numerical and experimental study on the design of a stratified thermal storage system, Applied Thermal Engineering, Vol. 24, No. 1, pp. 17-27 https://doi.org/10.1016/S1359-4311(03)00242-4
  8. Eames, P. C. and Norton, B., 1998, The effect of tank geometry on thermally stratified sensible heat storage subject to low Reynolds number flows, International Journal of Heat and Mass Transfer, Vol. 41, No. 14, pp. 2131-2142 https://doi.org/10.1016/S0017-9310(97)00349-9