Model Verification and Justification Study of Spirally Corrugated Pipes in a Ground-Air Heat Exchanger Application

Kwang-Seob Lee, Eun-Chul Kang, Yu-Jin Kim and Euy-Joon Lee
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Kwang-Seob Lee: Renewable Energy Engineering, University of Science and Technology, Korea, 217 Gajeong-ro, Yusung-gu, Daejeon 34113, Korea
Eun-Chul Kang: Energy Efficiency and Materials Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Yusung-gu, Daejeon 34129, Korea
Yu-Jin Kim: Renewable Energy Engineering, University of Science and Technology, Korea, 217 Gajeong-ro, Yusung-gu, Daejeon 34113, Korea
Euy-Joon Lee: Renewable Energy Engineering, University of Science and Technology, Korea, 217 Gajeong-ro, Yusung-gu, Daejeon 34113, Korea

Energies, 2019, vol. 12, issue 21, 1-13

Abstract: Ground-air heat exchangers have become an important topic in recent years due to their contributions to the market growth of the ground source heat pump industry. This paper provides a comprehensive study and recommends suggestions on the selection process of a suitable pipe for an air-to-water heat pump (AWHP). Parametric studies including material, turbulent plate quantity, and pipe type were performed to identify an optimal pipe design for high-performance AWHP. Both numerical and experimental studies were carried out to validate current pipe models. Overall, there was good agreement between the numerical model and experimental results. It was determined that a spirally corrugated pipe exhibited excellent thermal power generation with little compromising pressure drop. Finally, a pipe selection example was demonstrated as a design guideline to size an optimal pipe for AWHP application.

Keywords: ground source heat pump; numerical and experimental studies; ground-air heat exchanger; geothermal energy; computational fluid dynamics; spirally corrugated pipe (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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