일반공조 시스템 대비 축열조와 연동된 수직밀폐형 지열히트펌프의 냉난방 에너지 성능 및 경제성 분석

다국어 초록 (Multilingual Abstract)

Among various types of geothermal heat pump systems, Vertical Closed-Loop Geothermal Heat Pump (VGSHP) has received increasing attention due to a variety of advantages such as the potential to be installed in a relatively small space and improved energy efficiency. In this research, the performance of VGSHP system coupled with heat storage tank was evaluated, by analyzing operational behavior of heat storage tank, the variations of heat pump energy performance due to the connection with heat storage tank, part load ratios characteristics of heat pump and the corresponding energy cost, compared to chiller and boiler based conventional system. The results of this study showed that the VGSHP system coupled with heat storage tank showed an energy saving effect of about 18% for cooling and about 73% for heating, and annual heating/cooling energy cost reduction of 43,000,000 KRW ($ 39,000), compared to the conventional air conditioning system. In addition, after considering both energy cost and initial investment cost including equipment, installation and auxiliary device expenses, payback period of approximately 11.8 years was required.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 연구방법
• 3. 열원장치의 성능곡선 산출
• 4. 에너지 성능 평가 및 경제성 분석
• 5. 결론
• REFERENCES

참고문헌 (Reference)

1 이기창, "지열히트펌프와 지역냉난방 시스템의 운영사례를 중심으로 경제성 비교분석 연구" 대한설비공학회 28 (28): 103-109, 2016

2 남유진, "수치 시뮬레이션을 이용한 수직밀폐형 지열시스템의 채열특성에 관한 연구" 한국태양에너지학회 34 (34): 66-72, 2014

3 선종철, "수직밀폐형 지중열교환기의 온도분포 특성" 한국태양에너지학회 33 (33): 57-65, 2013

4 남유진, "공기 및 지열 이용 Dual-Source 히트펌프 시스템의 성능실험 및 경제성 분석" 대한설비공학회 26 (26): 212-217, 2014

5 Kim, M., "Operational behavior characteristics and energy saving potential of vertical closed loop ground source heat pump system combined with storage tank in and office building" 178 : 239-252, 2018

6 Hoseyn S., "Multi-objective optimization of a vertical ground source heat pump using evolutionary algorithm" 50 : 2035-2046, 2009

7 "Korea Energy Agency"

8 "Korea Electric Power Corporation"

9 Lim, H., "Ground source heat pump" 39 (39): 22-32, 2010

10 The U. S. Department of Energy, "EnergyPlus Input Output Reference"

11 Hyun, I., "Development of performance curve coefficients and its verification method for variable refrigerant flow heat pump system in EnergyPlus" Hanbat National University 2016

12 우상우, "CFD 해석에 의한 수직형 지열교환기의 성능예측" 한국태양에너지학회 27 (27): 117-126, 2007