International Journal of Air-Conditioning and Refrigeration

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Analysis on the Effect of Thermal Performance with Various Load Patterns for Solar Hot Water Heating System

  • Kim, Byoung-Gi (Department of Mechanical Engineering, Gyeongsang National University) ;
  • Jang, Hwan-Young (Department of Mechanical Engineering, Gyeongsang National University) ;
  • Chung, Kyung-Taek (2nd BK21(AMAEEP), Gyeongsang National University) ;
  • Suh, Jeong-Se (School of Mechanical and Aerospace Engineering, ReCAPT, Gyeongsang National University)
  • Published : 2007.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

The performance of a solar water heater incorporating evacuated tubes was evaluated using a transient simulation program, TRNSYS. Simulations were performed for $60^{\circ}C$ of hot water load temperature and for 280 liter of daily hot water volumes and three 400 liter of storage tank volumes. Three patterns of daily hot water consumption profile were used in the present study (morning, lunch and evening). The results show that the increase in solar fraction depends on the load profile, as well as the collector efficiency coefficient. Hot water draw profile has a large effect on the performance of the SDHWS, the morning load profile has the highest solar fraction. The annual solar fraction of the system, at the weather conditions of Jinju is approximately 84% at lunch load pattern, the 280 kg of load volume, 400 kg of tank volume and the $60^{\circ}C$ of load temperature.

Keywords

References

  1. Choi, B. S., Kim, J. H., Kang, Y. T., and Hong, H. K., 1997, Verification Experiment and Analysis for 6kW Solar Water Heating System, Solar Energy, Vol. 60, No.2, pp. 119-126 https://doi.org/10.1016/S0038-092X(96)00158-2
  2. Shin, U. C. and Baek, N. C., Active Solar Heating System Design & Analysis, Journal of the Korean Solar Energy Society, Vol. 23, No.4, pp. 11-20
  3. http://www.kma.go.kr
  4. Duffie, J. A. and Beckman, W. A., 1991, Solar Engineering of Thermal Processes. Wiley, New York
  5. Michaelides, I. M. and Wilson, D. R., 1996, Optimum Design Criteria Solar Hot Water Systems, WREC 1996, pp. 649-652
  6. Budihardjo, I., Morrison, G. L., and Behnia, M., 2003, Development of TRNSYS Models for Predicting the Performance of Water-in-Glass Evacuated Tube Solar Water Heaters in Australia, Destination Renewables, pp.1-10
  7. Shariah, A. M. and Lof, G. O. G., 1997, Effects of Auxiliary Heater on Annual Performance of Thermosyphon Solar Water Heater Simulated under Variable Operating Conditions, Solar Energy Vol. 50, No.2, pp.119-126
  8. Hicks, Tyler G., 2006, Handbook of Mechanical Engineering Calculations, McGraw-Hill, Chap. Vol. 17, pp. 17.6-13
  9. ANSI/ASHRAE Standard 93-1986, 1991
  10. Michaelides, I. M., 1997, Simulation Studies of the Position of the Auxiliary heater in Thermosyphon Solar Water Heating SyStems, Renewable Energy, Vol. 10, No.1, pp. 35-42 https://doi.org/10.1016/0960-1481(96)00020-1