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http://dx.doi.org/10.6110/KJACR.2011.23.5.327

Freeze Protection for Passive Solar Water Heating System  

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)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.23, no.5, 2011 , pp. 327-333 More about this Journal
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.
Keywords
Solar thermal energy; Freeze protection; Natural circulation; Hot water tracing technique;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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