The Korean Society For New And Renewable Energy
[ Article ]
New & Renewable Energy - , pp.1-8
ISSN: 1738-3935 (Print) 2713-9999 (Online)
Online publication date 05 Nov 2020
Received 22 Jul 2020 Revised 27 Sep 2020 Accepted 28 Oct 2020

Balancing Well 교차혼합 지중열교환기의 스마트 냉난방 히트펌프 시스템의 성능평가에 관한 연구

이창희1), * ; 김동규1) ; 유병석1) ; 김부일2)
Study on the Performance Evaluation of Smart Heating and Cooling Heat Pump System in a Balancing Well Cross-Conditioned Ground Heat Exchanger
Lee, Changhee1), * ; Kim, Donggyu1) ; Yu, Byeoungseok1) ; Kim, Booil2)
1)Professor, Department of Mechanical and Shipbuilding Convergence Engineering, Pukyong National University
2)Professor, Department of Electrical, Electronics and Software Engineering, Pukyong National University

Correspondence to: * Tel: +82-51-629-7816

© 2020 by the New & Renewable Energy
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


This study performed a single hole operation method using a balancing well-cross-mixed underground heat exchanger, and conducted thermal performance studies of an SCW-type underground heat exchanger using a two-well. The study attempted to change the existing operating method of the two adjacent SCW underground heat exchangers with one ball each. The SCW-type geothermal heat exchanger is considered to enable up to 20% of bleed discharge at maximum load, which makes groundwater usage unequal. The efficiency factor of the geothermal system was improved by constructing the discharged water by cross-mixing two balancing wells to prevent the discharge of groundwater sources and keep the temperature of the underground heat exchanger constant. As a result of the cooling and heating operation with the existing SCW heat exchange system and the balancing well-cross-mixed heat exchange system, the measured performance coefficient improved by 23% and 12% in cooling and heating operations, respectively. In addition, when operating with a balanced cross-mixing heat exchange system, it has been confirmed that the initial basement temperature is constant with a standard deviation of 0.08 to 0.12°C.


Balancing well, Standing column well(SCW), Aquifer groundwater flow, Geothermal heat exchanger


밸런싱 웰, 스탠딩 웰 컬럼, 대수층 지하수 유동, 지중열교환기