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난방 및 급탕 겸용 히트펌프의 바닥 난방 및 공기 난방 방식에 따른 에너지 성능 비교
조수영(Su-Young Jo),김범준(Beom-Jun Kim),동혜원(Hye-Won Dong),정재원(Jae-Weon Jeong) 대한설비공학회 2021 대한설비공학회 학술발표대회논문집 Vol.2021 No.6
Recently, in order to reduce the energy used in buildings, not only energy regulations for new buildings but also energy performance improvement policies for existing buildings are being promoted. Among energy performance improvement technologies, the heat pump, which is a major technology, is suitable for use as an integrated system because it is capable of cooling, heating, and hot water supply with a single device. Therefore, in this study, energy consumption for air heating and floor heating was compared because the capacity of the heat pump varies depending on the heating method. At this time, the case of using a single heat pump and a case of using a binary heat pump were analyzed. . In this study, a simulation was performed on the case of supplying winter heating and hot water to the integrated system, and the cases presented for comparative analysis were classified into a total of 4 cases according to the heating method and the type of heat pump. As a result of the simulation, it was found that energy savings of 8.15% were high in the case of air heating by using a single heat pump and by using a binary heat pump in the case of floor heating by 4.14% according to the heating method.
고분자 전해질 연료전지(PEMFC)가 적용된 제습증발냉각 전외기 공조시스템의 연간 1차 에너지 절감량 분석
조수영(Jo, Su-Young),정재원(Jeong, Jae-Weon) 한국건축친환경설비학회 2015 한국건축친환경설비학회 논문집 Vol.9 No.4
The main purpose of this paper is to estimate primary energy saving of polymer electrolyte membrane fuel cell (PEM fuel cell) for a liquid desiccant indirect and direct evaporative cooling assisted 100% outdoor air system (LD-IDECOAS). Also, we have suggested the PEM fuel cell performance predicted model by experiments. The fuel cell system provides the electric power and thermal energy by combining hydrogen and oxygen simultaneously. If waste heat is used, the total energy efficiency of fuel cell is up to 85%. The PEM fuel cell is suitable as a system for supplying power and heat sources to LD-IDECOAS. Using the measured load profile of the pilot system, the required electric capacity of the fuel cell system was designed at 10 kW. To suggest the performance predicted model of fuel cell, several test were conducted in the facility of pilot system. The predicted model was used to calculate the annual primary energy saving of a fuel cell. In this research, the performance of the previous systems using conventional gas-fired boiler and purchased electricity are compared with that of the proposed system to evaluate energy saving potential.
IFC-BIM을 활용한 공동주택의 실내공기질 인증 자동화 시스템 개발
조수영(Su-Young Jo),장향인(Hyang-In Jang),김창민(Chang-Min Kim),이대길(Dae-Gil Lee),홍심희(Sim-Hee Hong),유정호(Jung-Ho Yu) 한국생활환경학회 2018 한국생활환경학회지 Vol.25 No.3
In the field of construction, the number of times obtaining indoor air quality certifications has been increasing every year. However, there are problems such as complexity of the evaluation process, data omission and evaluation errors due to diversification of the detailed criteria of the certification. Therefore, this study proposes an automation system on evaluating the indoor air quality of apartment houses using IFC-BIM. In order to achieve the goal of the study, first, required information for the evaluation of indoor air quality certification is defined. Second, the required information is classified according to the information generation method. Third, a platform capable of calculating the credit points in the indoor air quality certification and outputting the submission documents is proposed. Fourth, The composition, function, and process of the indoor air quality certification automation system are derived. Finally, a pilot test is performed to verify productivity and reliability of the proposed method. Since the input and output of required information for the certification are automatically provided using the developed system, it is possible to improve the work environments and shorten the work time.
고분자 전해질 연료전지(PEMFC)의 운전을 통한 발전 및 열 생산 성능 예측 모델 개발
동혜원(Dong, Hye-Won),조수영(Jo, Su-Young),이성준(Lee, Sung-Joon),정재원(Jeong, Jae-Weon) 대한건축학회 2015 대한건축학회논문집 Vol.31 No.10
A fuel cell has come up as an upcoming new and renewable energy recently. The fuel cell is the system which is converting chemical energy to power and heat. When applied to fuel cell in buildings, PEMFC(Polymer electrolyte membrane fuel cell) is mainly used due to relatively low operating temperature (50-100℃). Performance prediction models for fuel cell are actively being studied, however, researches are mainly focused on analysis about stack or electrochemical reaction in the fuel cell. The purpose of this study is to suggest empirical performance prediction model for PEMFC by statistically analyzing PEMFC operation data and to evaluate the feasibility of empirically derived models. Also, combining the data from this and previous study, electrical efficiency and thermal efficiency model are derived to completement each other. Fuel cell performance is predicted under any operating condition using these models.
스마트시티 설계 시 제로에너지건축물 인증 취득을 위한 패시브/액티브 인자별 평균성능 및 참조모델 제시 - 교육연구 및 업무시설을 중심으로 -
이다영(Lee, Da-Young),유동철(Yoo, Dong-Chul),조수영(Jo, Su-Young),박창영(Park, Chang-Young),장향인(Jang, Hyang-In) 한국건축친환경설비학회 2020 한국건축친환경설비학회 논문집 Vol.14 No.5
To implement the zero-energy building policy in establishing the smart city, reference models of zero-energy buildings were suggested in this study. Reference models that reflect the average performance of energy-related factors were designed. Passive and active influencing factors were selected from the literature review. Then, the values of influencing factors in reference models were derived from the average performance of the 1++ rating certification cases. The building purposes of the reference models were selected as education & research and office, and were then subdivided according to the detailed purpose or size. To validate the models, the energy performance of the reference models was simulated and the results of simulation showed that all reference models achieve the 1++ rating which meets the criteria of zero-energy building certification. The influencing factors and reference values that were suggested in this study are expected to be used in designing the zero-energy building and further studies that develop the reference models of other cases.
증발냉각 응축기 기반 공기열원 히트펌프의 에너지 절감 효과 분석
김범준(Beom-Jun Kim),조수영(Su-Young Jo),강용권(Yong-Kwon Kang),정재원(Jae-Weon Jeong) 대한설비공학회 2020 대한설비공학회 학술발표대회논문집 Vol.2020 No.6
The main purpose of this study is to investigate the energy saving potential analysis of a spryed-condenser assisted air-source heat pump used in an office building during summer season. A direct evaporative cooler was installed on the inlet side of the condenser to enhance the heat exchange performance. The hot ambient air was introduced to the direct evaporative cooler and cooled nearly wet bulb temperature by evaporative cooling effect. The cooled air treated by direct evaporative cooler was introduced to the condenser. A energy recovery ventilation was installed for ventilation of the occupants, and all of the sensible and latent load of the office building is removed by the proposed and existing heat pump system. The simulation was conducted by Engineering Equation Solver (EES) and TRNSYS 18 for model building thermal load simulation. The result was showed that proposed heat pump system is saved 26.4% of primary energy consumption than existing heat pump system in summer. This can be solve the problem of maximum power demand and overheating in summer with simple installation.