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http://dx.doi.org/10.9720/kseg.2015.1.131

Study on Efficiency for Underground Heat Transfer of Metal Heat Exchanger  

Song, Jae-Yong (SanHa E&C Co., Ltd)
Kim, Ki-Joon (SanHa E&C Co., Ltd)
An, Sang-Gon (SanHa E&C Co., Ltd)
Kim, Jin-Sung (Rural Research Institute, Korea Rural Community Corporation)
Jeong, Gyo-Cheol (Dept. of Earth and Environmental Sciences, Andong National University)
Publication Information
The Journal of Engineering Geology / v.25, no.1, 2015 , pp. 131-148 More about this Journal
Abstract
The purpose of this study is to analyze and compare the heat transfer efficiency of using copper pipe, stainless pipe and traditional PE pipe commonly used for geothermal heat exchanger, with aims at seeking improved methods. In addition, the varying efficiency of heat transfer from ground heat and groundwater heat was assessed and its applicability was discussed. Design parameters for empirical field study were derived by controlling flow rate, velocity and caliber of pipes of the heat exchanger after the thermal efficiency of the heat exchanger material was evaluated. The heat exchange efficiency and effective thermal conductivity were measured with changing pattern through field thermal efficiency and thermal response test. Experimental results show that the metal material showed higher heat transfer efficiency than the PE pipe. Although the heat transfer efficiency was not high with the increase of the pipe diameter in the flow rate, it was high with the increase of the pipe diameter in the velocity.
Keywords
heat exchanger; heat efficiency; heat conductivity; metal;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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