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http://dx.doi.org/10.17664/ksgee.2016.12.2.001

Ground Air Heat Exchanger Design and Analysis for Air Source Heat Pump  

Lee, Kwang-Seob (Department of Renewable Energy Engineering, University of Science and Technology)
Lyu, Nam-Jin (Technical Research Center, Tapsol)
Kang, Eun-Chul (Energy Efficiency Research Division, Korea Institute of Energy Research)
Lee, Euy-Joon (Energy Efficiency Research Division, Korea Institute of Energy Research)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.12, no.2, 2016 , pp. 1-6 More about this Journal
Abstract
A ground air heat exchanger (GAHX), also called earth air heat exchanger is a useful technology to be integrated with other renewable energy technologies. In this study, ground-air heat exchanger system for the air source heat pump is introduced. The purpose of this study is to design the volumetric flow rate and the length of GAHX system. A GAHX length model equation has been developed and used for calculation. GAHX thermal efficiency are recommended as 75% and 85% in order to optimize pipe length. $2,750m^3/h$, $2,420m^3/h$ of volumetric flow rate on 88.3m, 111.7m length are suggested for providing 7.5kW thermal capacity. And the number of path is recommended more than two to minimize pressure drop. For future study, advanced model equation study with ground thermal behavior and a more efficient GAHX design will be considered.
Keywords
Ground Air Heat Exchanger; Air Source Heat Pump; GAHX Thermal Efficiency; Model Equation;
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Times Cited By KSCI : 1  (Citation Analysis)
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