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김치광(Chi Kwang Kim),박민찬(Min Chan Park),김광만(Kwang Man Kim),이창욱(Chang Uk Lee),김현호(Hyun Ho Kim),안영철(Young Chull Ahn) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
A heat pump-based integrated facility for a small domestic building was installed and constructed in an actual residential environment. This integrated facility can be applied for small-scale buildings not only new construction but also for remodeling. Based on the heat pump, cooling, heating, hot water supply, and ventilation are possible, and it is operated with integrated control logic. A heat pump and fan coil unit are applied to supply cold air for cooling, and a heat pump and floor water pipe are applied to supply heat for heating, so that it is suitable for the domestic user environment. In addition, depending on the indoor condition, the total heat exchanger can be operated to improve indoor air quality
국내주거환경에 적합한 히트펌프 기반 통합설비 구성과 급탕성능에 관한연구
김치광(Chi Kwang Kim),박민찬(Min Chan Park),이재근(Jae Keun Lee),나병철(Byeong Chul Na),이창욱(Chang Uk Lee),안영철(Young Chull Ahn) 대한설비공학회 2020 대한설비공학회 학술발표대회논문집 Vol.2020 No.6
This study analyzed the integrated facilities based on an electric driven air to water heat pump(e-AWHP) suitable for a domestic residential buildings, and evaluated the water heating energy efficiency using(e-AWHP). Analysis of integrated facilities applied to Western Europe basically includes (e-AWHP), ventilation, and domestic hot water(DHW) tank. In addition, PCS is applied additionally when PV is applied. Since most residential buildings in Korea have floor heating, it is possible to increase energy efficiency by applying radiant heating and cooling using (e-AWHP). It is appropriate to organize all elements of the integrated facility into single package, as small buildings in Korea have a narrow area of land and prefer to separate the machine room from the residential space. For the hot water performance test, 8.38kW (e-AWHP) and 200L DHW were composed of a single hot water supply system, and the performance evaluation according to EN standard confirmed that the water heating energy efficiency was 61.63%.
김치광(Chi Kwang Kim),박민찬(Min Chan Park),김광만(Kwang Man Kim),이창욱(Chang Uk Lee),김현호(Hyun Ho Kim),안영철(Young Chull Ahn) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
A heat pump-based integrated facility for a small domestic building was installed and constructed in an actual residential environment. This integrated facility can be applied for small-scale buildings not only new construction but also for remodeling. Based on the heat pump, cooling, heating, hot water supply, and ventilation are possible, and it is operated with integrated control logic. A heat pump and fan coil unit are applied to supply cold air for cooling, and a heat pump and floor water pipe are applied to supply heat for heating, so that it is suitable for the domestic user environment. In addition, depending on the indoor condition, the total heat exchanger can be operated to improve indoor air quality
소규모 건축물 통합설비의 부분부하율과 성적계수 상관관계 분석
정용호,박선효,안병욱,김치광 한국생활환경학회 2023 한국생활환경학회지 Vol.30 No.2
The basic facility efficiency of a small building was represented by a value at the time of rated power, but it is difficult to evaluate the actual energy consumption or calculate the energy consumption by the period load, so Europe and the United States are converting it to the period energy efficiency. Considering this trend, the period efficiency of each mode is applied in Korea, but despite similar devices, the evaluation methods are all different. In particular, the applicable evaluation criteria are insufficient for integrated facilities that are expected to be highly applicable to small buildings. Therefore, it is considered necessary to analyze the processing load mode for integrated facility systems that are expected to be installed in small buildings in the future and evaluate the period energy efficiency of the energy consumption compared to the processing energy. The COP based on monthly total integrated power was 3.1, 3.5, and 4.3, respectively, and the partial load rate was 28.8%, 38.1%, and 71.2%, respectively. In the mid-April and May, the COP of the integrated facility was somewhat reduced when hot water and ventilation were integrated. As a result of the COP analysis of the integrated facility, it was analyzed that when the load amount of the building is calculated, it is possible to predict energy consumption by applying COP according to the change in the partial load rate.
유전체분리판 전기집진기의 도시철도 승강장 내 초미세먼지 제거 실증 평가
김세훈,방주엽,이재근,박민찬,김창욱,김흥렬,김종원,김치광 한국도시철도학회 2020 한국도시철도학회논문집 Vol.8 No.4
The concentration of ultra fine particles (PM2.5) inside the underground subway station is greatly affected by the outdoor PM concentration. It is necessary to remove ultra fine dust by installing an air purification facility with high dust collection efficiency and low pressure drop. In this study, an high efficiency electrostatic precipitator(ESP) with a dielectric separator is designed and evaluated. The dielectric separator can prevent short circuit between electrodes and improve the dust collection performance by increasing the strength of the electric field and the dust collection area by electric polarization. The result of the demonstration facility installed at Busan Minam Subway station without replacing the fan motor of the existing air handling unit shows that about 40% of the concentration of PM2.5/PM10 in the platform is removed during the subway operation hours. The collected dust is automatically removed to be possible to use for a long time. 도시철도 지하역사 내 초미세먼지(PM2.5) 농도는 외기농도에 크게 영향을 받으므로 외기를 도입하는 공기조화기에 높은 집진효율과 낮은 차압 구조의 공기정화설비를 설치하여 초미세먼지를 제거할 필요가 있다. 본 연구에서는 기존 지하역사에 설치된 공기조화기에 설치가 가능하고, 초미세먼지 제거효율이 높으며, 낮은 압력손실을 가지며, 자동세정이 가능한 유전체분리판 전기집진기를 개발하였고, 부산 미남역사에서 실증 설치하여 초미세먼지 제거 특성에 대해 연구를 수행하였다. 유전체 분리판은 전기집진기 내에서 전극 간 단락을 방지할 수 있으며, 전기적 분극에 의해 전기장의 세기와 집진면적을 증대시켜 집진성능 향상이 가능하다. 부산 도시철도 미남역에서 공기조화설비의 팬모타 교체 없이 본 연구 개발품을 적용한 실증설비의 연구결과는 지하철 운행시간 중 승강장 내 PM2.5/PM10 농도의 약 40%가 제거되었으며, 포집된 먼지는 자동세정이 가능하여 장시간 사용이 가능하였다.
전기식 히트펌프와 히트펌프 구동 기반 액체 데시칸트 시스템의 에너지 효율 연구
박정수(Jeong Soo Park),이정현(Jeong Hyeon Lee),마삼선(Sam Sun Ma),신만수(Man Su Shin),강해수(Hae Su Kang),김치광(Chik Wang Kim),박민찬(Min Chan Park),이재근(Jae Keun Lee),안영철(Young Chull Ahn) 대한설비공학회 2018 대한설비공학회 학술발표대회논문집 Vol.2018 No.6
This study focuses on a heat pump driven liquid desiccant system consisting of a electronic heat pump and a liquid desiccant system. The heat pump driven liquid desiccant system is expected to have higher efficiency than traditional electric heat pump systems. The main feature of this system is that the absorber and regenerator are intergrated with the evaporator and condenser respectively. Conventional liquid desiccant were not directly applicable to condensers and evaporators of heat pumps due to their corrosiveness. The COP was improved by reducing the driving conditions of the electric heat pump by spraying the noncorrosive liquid desiccant used in this study directly to the condenser and the evaporator. As a result, COP improvement of 26% compared to electric heat pump under KS standard condition.
이정현(Jeong Hyeon Lee),박정수(Jeong Soo Park),마삼선(Sam Sun Ma),신만수(Man Su Shin),강해수(Hae Su Kang),김치광(Chik Wang Kim),박민찬(Min Chan Park),이재근(Jae Keun Lee),안영철(Young Chull Ahn) 대한설비공학회 2018 대한설비공학회 학술발표대회논문집 Vol.2018 No.6
A photovoltaic/thermal (PVT) collector technique maximize the effectiveness of solar radiation energy, producing electricity and heat simultaneously. It prevents a power drop due to PV surface temperature with a temperature coefficient in the range from -0.3 %/K to -0.65%/K. Also, an absorbed solar thermal energy can be applied on heating in the winter and dehumidification cooling system in the summer respectively. Air flow in the collector plays a crucial role in the thermal and electrical performance of air type PVT, depending on the figuration and orientation of fin inside collector. In this study, PVT shapes were designed as three types (basic type, horizontal type, vertical type) and analyzed by CFD(Computational Fluid Dynamics). Based on results of flow analysis, three air type PVT systems were experimented, and the thermal and electrical performance of those was investigated. The horizontal fins break the laminar airflow and forms a vortex flow pattern, which improve heat exchange rate. As its effect, horizontal type PVT showed the highest electrical performance by cooling, and equivalent heat performance in experimental result.