응축열을 이용한 냉방-급탕 복합형 GSHP시스템의 성능평가 실험

다국어 초록 (Multilingual Abstract)

Ground-Source heat pump(GSHP) system uses geothermal energy to provide space cooling or heating. GSHP makes use of energy stores in ground as heat source or heat sink. It is more energy-efficient way of heating and cooling buildings. That is because ground temperature is lower than air temperature in summer time, and higher than air temperature in winter time. Moreover, ground temperature always keep stable during years. But, when the GSHP system runs long time, ground temperature will be changed. and the performance of the GSHP system will be affected. GSHP also can be used as domestic hot water(DHW) system. But the lower temperature of the heat source makes it difficult to get high temperature hot water. Therefore, a GSHP Cooling & DHW combination system was proposed in this study. In the proposed combination GSHP system the condensation heat from the condenser of GSHP cooling system is reused as the heat source of the DHW heat pump. Hence the drop in ground temperature caused by the long time operation of GSHP cooling system will be improved. In order to evaluate the performance of the combination GSHP system, mock-up experiments were conducted. as comparison, the performance of GSHP cooling-only system and GSHP DHW-only system in the same experimental conditions were evaluated too. As experimental results, the coefficient of performance(COP) of the cooling heat pump of the combination system is about 12.93% higher than GSHP cooling-only system, and the COP of the DHW heat pump of the bombination system is about 15.47% higher than GSHP DHW-only heat pump system.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 냉방-급탕 복합형 GSHP 시스템 운전방식
• 2.1 GSHP 개요 및 운전방식
• 2.2 냉방-급탕용 복합형 GSHP 운전방식
• 3. 실험시스템 구성 및 실험 조건
• 3.1 실험 시스템 구성
• 3.2 실험 조건
• 4. 실험 결과 및 해석
• 4.1 실험에서의 온도 및 유량 제어
• 4.2 GSHP시스템의 단독 냉방운전 실험결과
• 4.3 GSHP 시스템의 단독 급탕운전 실험결과
• 4.4 냉방-급탕용 복합형 GSHP시스템 성능검증 실험결과
• 5. 결론
• REFERENCES

참고문헌 (Reference)

1 백남춘, "콤팩트형 태양열/지열히트펌프 하이브리드 냉난방 및 급탕 시스템 개발 및 성능분석" 한국태양에너지학회 32 (32): 59-67, 2012

2 정근주, "지열히트펌프와 공기열원 및 가스엔진 히트펌프의 온실가스 비교" 대한건축학회지회연합회 10 (10): 165-172, 2008

3 박주석, "지열시스템의 그라우팅재 배합비율에 따른 열전도도 및 PE관에 미치는 영향 분석 - 정부대구지방합동청사 현장을 대상으로 -" 대한건축학회지회연합회 14 (14): 183-189, 2012

4 강훈, "동시냉난방 열펌프 시스템의 운전모드별 성능특성에 관한실험적 연구" 대한설비공학회 19 (19): 679-686, 2007

5 박화춘, "국내 호텔 건물의 에너지 부하 모델" 한국태양에너지학회 29 (29): 48-57, 2009

6 Woo, J.S., "The technology of Hybrid Geothermal Heat Pump System" 7 (7): 43-50, 2011

7 홍원표, "TRNSYS 프로그램을 이용한 대형쇼핑매장 에너지성능해석 및 지열시스템을 도입하는 경우 에너지절약 특성분석" 한국조명.전기설비학회 29 (29): 47-56, 2015

8 Park, H.H., "Performance optimization of hybrid ground source heat pump with the" 35 : 1537-1546, 2012

9 Allaerts, K., "Hybrid Ground-Source Heat Pump System with Active Air Source Regeneration" 90 : 230-237, 2015

10 Safa, A., "Heating and Cooling Performance Characterisation of Ground Source Heat Pump System by Testing and TRNSYS Simulation" 83 : 565-575, 2015

11 Self, S., "Geothermal heat pump systems : Stadus reiview and comparison with other comparison with other heating options" 101 : 341-348, 2013

12 The society of Air-Conditioning and Refrigerating Engineers of Korea, "Facility Engineering Handbook Vol. 3"

13 You, T., "A new ground-coupled heat pump system integrated with a multi-mode air-source heat compensator to eliminate thermal imbalance in cold regions" 107 : 103-112, 2015