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신재생 열원대응 하이브리드 히트펌프의 성능실험에 관한 연구
채호병(Ho-Byung Chae),남유진(Yujin Nam),김대기(Dea-Ki kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6
Recently, the use of renewable energy has been attracted due to growing interest in the energy-saving at buildings and the reduction of CO2 emission. In the field of architecture, to reduce the energy consumption of the heating, the cooling and the hot water supply, heat pump systems using the renewable energy has been developed and used in various applications. However, there have been many of researches on the large-scale commercial heat pump systems, but the research and the field application of a compact heat pump system is rare. Therefore, in order to develop the compact heat pump for the small-scale residential building, this study conducted the experimental analysis for the performance of a hybrid heat pump using the heat source of air, solar and ground. In the results of experiments through a trial product, the average COP of cooling mode with ground heat source was 3.74, and it of heating mode was 3.74. Furthermore, the average COP of cooling mode with air heat source was 3.74, and it of heating mode was 3.74.
지중열이동 해석 모델을 이용한 수평형 지열시스템의 채열량 예측에 관한 연구
채호병(Ho-Byung Chae),남유진(Yujin Nam) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.11
Ground source heat pump(GSHP) system has been attracted by its stability of heat production and high efficiency of the system. However, there are few studies on the prediction method of the heat exchange rate for the horizontal ground heat pump system. In this research, in order to predict the performance of horizontal geothermal system, coupled simulation with a ground heat transfer model and a heat exchanger circulation model was developed, and calculation of heat exchange rate was conducted by the developed tool. As the result, the heat exchange rate of horizontal system including temperature of the circulation water and underground was calculated.
Barrette 파일을 이용한 지열시스템의 채열 성능 예측 및 경제성 분석에 관한 연구
채호병(Ho-Byung Chae),남유진(Yujin Nam),박용부(Yong-Boo Park) 대한설비공학회 2013 설비공학 논문집 Vol.25 No.11
Ground source heat pump systems (GSHP) can achieve higher performance of the system, by supplying more efficient heat source to the heat pump, than the conventional air-source heat pump system. But building clients and designers have hesitated to use GSHP systems, due to expensive initial cost, and uncertain economic feasibility. In order to reduce the initial cost, many researches have focused on the energy-pile system, using the structure of the building as a heat exchanger. Even though several experimental studies for the energy-pile system have been conducted, there was not enough data of quantitative evaluation with economic analysis and comprehensive analysis for the energy-pile. In this study, a prediction method has been developed for the energy pile system with barrette pile, using the ground heat transfer model and ground heat exchanger model. Moreover, a feasibility study for the energy pile system with barrette pile was conducted, by performance analysis and LCC assessment. As a result, it was found that the heat exchange rate of a barrette pile was 2.55 kW, and the payback period using LCC analysis was 8.8 years.
채호병(Ho-Byung Chae),남유진(Yujin Nam),성민기(Min-Ki Sung),김종훈(Jong-Hoon Kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.11
Recently, natural disasters have unexpectedly occurred at various places in the world and the countermeasure of them become the social issues. Many of victims in disasters need temporary residential facilities above all things and many of researches have been conducted in order to develop simple, safe, and economic designs of them. Moreover, indoor thermal comfort and air quality must be considered in the facilities against a disaster, because clean and healthy space should be provided to the suffered victims. In this research, in order to estimate the indoor environment of the developed modular building for disaster preparation, CFD simulation was conducted in the various condition. In this paper, indoor air quality such as the age of air, the concentration of CO₂ was calculated in the base case.
에너지파일 이용 지열시스템의 채열성능 예측수법에 관한 연구
채호병(Chae, Ho-byung),남유진(Nam, Yujin) 한국건축친환경설비학회 2012 한국건축친환경설비학회 학술발표대회 논문집 Vol.2012 No.10
Recently, ground source heat pump systems(GSHP) utilizing annualy stable ground temperature for energy saving have been attracted in many buildings. these systems can achieve higher performance of system by supply more efficient heat source to the heat pump than the conventional air-source heat pump system. But, GSHP systems have disadventage due to increase of initial installation and boring cost. In onder to reduce the initial cost, many researches have focused on the energy-pile system using the structure of the building as a heat exchanger. However, there are few studies on the prediction method of heat exchange rate for energy piles. In this study, the prediction methood using the ground heat transfer model and ground heat exchanger model has been developed for the energy pile system using barrette pile.
수평형 지중열교환기를 이용한 건물일체형 지열시스템의 도입타당성 분석
채호병(Chae Ho-Byung),남유진(Nam Yujin),윤성훈(Yoon Sung-Hoon) 한국태양에너지학회 2015 한국태양에너지학회 논문집 Vol.35 No.1
Recently, in order to prevent increasing energy usages in the international community, many countries have attempted to develop the innovative renewable energy systems. Among the renewable energy systems, Ground source heat pump(GSHP) system which supply the heating, cooling and hot water in the building has been attracted by its stability of heat production and high efficiency. However, the initial drilling costs become very expensive and the construction period takes longer the other systems, because GSHP system needs more than 100 m depth drilling. In this study, in order to reduce initial costs of the GSHP, the building integrated geothermal system using the horizontal heat exchanger was developed. The heating and cooling load in the standard housing model was calculated by a simulation and the system design capacity in the high-rise apartment was decided by the total load. Based on the system design capacity, the high-rise apartments were applied to a BIGS and vertical GSHP system and there are analyzed about initial costs. In the result, the initial cost of BIGS could reduce 24% of the initial cost of the vertical GSHP system.
지중열 이동 시뮬레이션을 이용한 수평형 지열시스템의 채열성능 예측
남유진(Yujin Nam),채호병(Ho-Byung Chae) 대한설비공학회 2013 설비공학 논문집 Vol.25 No.6
The ground source heat pump (GSHP) system has attracted attention, because of its stability of heat production, and the high efficiency of the system. However, there are few studies on the prediction method of the heat exchange rate for a horizontal GSHP system. In this research, in order to predict the performance of a horizontal GSHP system, coupled simulation with a ground heat transfer model and a heat exchanger circulation model was developed, and calculation of heat exchange rate was conducted by the developed tool. In order to optimally design the horizontal GSHP system, the flow rate of circulation water, and the depth and buried spaces of heat exchangers were considered by the case study. As a result, the temperature of circulation water and the heat exchange rate of the system were calculated in each case.
공기 및 지열 이용 Dual-Source 히트펌프 시스템의 성능실험 및 경제성 분석
남유진(Yujin Nam),채호병(Ho-Byung Chae) 대한설비공학회 2014 설비공학 논문집 Vol.26 No.5
Recently, the use of renewable energy has been increased due to growing concern on the energy-saving at buildings and the reduction of CO2 emission. In the field of architecture, to reduce the energy consumption of heating, cooling and hot water supply, heat pump systems with renewable energy has been developed and used in various applications. However, there have been many of researches on the large-scale commercial heat pump systems, but the research and the field application of a compact heat pump system is rare. Therefore, in order to develop the compact heat pump for the small-scale residential building, this study conducted the performance test and feasibility study for a hybrid heat pump using the heat source of air, solar and ground. In the results of experiments through a trial product, the average COP of cooling mode with ground heat source was 4.75, and it of heating mode was 4.03. Furthermore, the average COP of cooling mode with air heat source was 2.60, and it of heating mode was 2.92. Finally, payback period of the system was calculated as 9.2 years.