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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Freeze Protection for Passive Solar Water Heating System

자연순환형 태양열온수기 동파방지기술

  • Kim, Jong-Hyun (Graduate School, Department of Mechanical Engineering, Kyung Hee University) ;
  • Hong, Hi-Ki (Department of Mechanical Engineering, Kyung Hee University) ;
  • Chung, Jae-Dong (Mechanical Engineering, Sejong University)
  • 김종현 (경희대학교 기계공학과 대학원) ;
  • 홍희기 (경희대학교 기계공학과) ;
  • 정재동 (세종대학교 기계공학과)
  • Received : 2011.01.12
  • Accepted : 2011.04.05
  • Published : 2011.05.10
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Abstract

In the present work, a new freeze protection method has been proposed for a natural circulation system of solar water heater. Though electrothermal wire is popularly used for the purpose, there are freezing troubles by wire cut-off and shortage of excessive electric power consumption. In the experimental device, hot water in storage tank was used to heat the outlet pipe from the tank if the pipe surface temperature falls lower than a set point. The cold water pipe to the storage tank was installed to directly contact the hot water pipe surface temperature rose by transferred heat.

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References

  1. KEMCO, 2008, Solar Energy, BooksHill.
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  7. Kim, Y. I., Chung, K. S., Oh, H. K., Suh, S. J., Oh, J. T., and Park, B. Y, 2009, Research on improvement of insulation construction performance, Proceedings of the SAREK Winter Annual Conference, pp. 336-341.

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  1. Freeze Protection for Passive Solar Water Heating System in Bitter Cold Areas vol.31, pp.5, 2011, https://doi.org/10.7836/kses.2011.31.5.041
  2. Prediction of the Heat Exchange Rate for a Horizontal Ground Heat Pump System Using a Ground Heat Transfer Simulation vol.25, pp.6, 2013, https://doi.org/10.6110/KJACR.2013.25.6.297