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정웅준(Woong June Chung),최창식(Chang Sik Choi),여명석(Myoung Souk Yeo) 적정기술학회 2017 적정기술학회지(Journal of Appropriate Technology) Vol.3 No.2
현재 노후주택의 낮은 건물 에너지 성능을 개선하기 위해 적정기술을 적용하여 개선효과를 볼 수 있는 노후주택용 적정기술 개발이 필요하다. 노후주택을 위한 적정기술을 효율적으로 적용하기 위해서는 노후주택에서 발생하는 열손실이 가장 크게 일어나는 부위를 중심으로 개발해야하고 이를 위해서는 현재 노후주택 성능 실태를 파악해야한다. 본 연구를 실행하기 위해 노후주택 성능 실태조사를 실제건물을 대상으로 실행하였고 여러 가지 시나리오로 접근하기 위해 시뮬레이션을 실행하였다. 건물 성능을 파악하는 방안으로 건물의 열관류율과 침기량을 측정하였고 실측데이터를 바탕으로 시뮬레이션에 적용하여 취약부위를 밝혀냈다. 현재 정부에서 지원하고 있는 금액으로 취약부위 중심의 보수와 법규수준의 성능으로 모든 부위를 보수하는 대안을 바탕으로 경제성분석을 통해 앞으로의 적정기술 개발방향을 도출하였다. As the old houses have poor energy performances, appropriate technology for old houses needs to be developed for the effectiveness of retrofitting the building. For increasing the efficiency, the retrofit should be performed on the poorest building components, which needs to be evaluated based on the actual old houses. In this research, the performance of the old house was measured and simulation was performed to approach the solution in variety of alternatives. In order to evaluate the performance of old houses, the heat transmission coefficient and infiltration were measured. The measurements were used to simulate the building and poor building components were investigated. The economic analysis was performed by retrofitting the building with the support from the government and up to the performance in the building code. And the improvement idea was proposed based on the economic analysis.
노후주택의 리트로핏을 위한 외벽 단열성능 측정방법 비교
문승현(Moon, Seoung Hyun),정웅준(Chung, Woong June),여명석(Yeo, Myoung Souk) 대한건축학회 2017 대한건축학회 학술발표대회 논문집 Vol.37 No.2
Since each old house has different insulation performance, it is necessary to accurately measure the insulation performance for an efficient retrofit. In most of the studies, the insulation performance measurement method that is judged to be suitable for the field is the Heat Flow Meter method (ISO 9869) and the Infrared camera method (KS 2829). Both methods are accurate under certain conditions. However, since the environment of the old housing can not be manipulated, errors are inevitable. The purpose of this study is to grasp the errors of each method of measuring the insulation performance that can occur on the site, and to find out which insulation performance measurement method is more suitable for the old housing. As a result, the error of the HFM method (17%) was lager than that of the IR method (4%).
공동주택의 단열 및 차양에 따른 구체축열시스템 냉방성능 평가
유미혜,여명석,이유지,정웅준,박상훈,김광우,Yoo, Mi-Hye,Yeo, Myoung-Souk,Lee, Yu-Ji,Chung, Woong-June,Park, Sang-Hoon,Kim, Kwang-Woo 한국주거학회 2012 한국주거학회 논문집 Vol.23 No.2
Thermally Activated Building System(TABS) is a radiant heating and cooling system which uses structures as thermal storage by embedding pipes in a concrete slab. Using TABS as the cooling system in residential buildings can reduce energy consumption and peak loads. But the ratio of cooling loads handled by TABS is low in the residential buildings which are significantly influenced by outside condition because condensation and over-cooling may occur. However, recent interest on energy-saving buildings is increasing and new residential buildings are expected to be less influenced by outside with high-insulation and shading. In such residential buildings, the heating and cooling loads and the range of load changes reduce. So the ratio of loads handled by TABS can increase. Therefore, this research investigates the cooling performance and energy performance of TABS in the residential buildings with less influence from outside using the simulation.
주거건물의 냉방 부하 패턴에 따른 구체축열시스템 운전 방안
박상훈,여명석,유미혜,이유지,정웅준,김광우,Park, Sang-Hoon,Yeo, Myoung-Souk,Yoo, Mi-Hye,Lee, Yu-Ji,Chung, Woong-June,Kim, Kwang-Woo 한국주거학회 2012 한국주거학회 논문집 Vol.23 No.2
Compared to Packaged Terminal Air Conditioning Systems, Radiant Cooling Systems have the advantage of energy saving and thermal comfort. Thermally Activated Building System (TABS) is one of the radiant heating and cooling systems. The main difference between TABS and other radiant systems lies in the usage of the time-lag effect of storing heat energy in the concrete. Current energy usage in summer time is concentrated within a specific time by using Packaged Terminal Air-Conditioner (PTAC). Due to the time-lag effect of TABS, energy usage can be distributed to other time zones. To maximize this effect, it is important to determine the appropriate operating mode, which for TABS is dependent upon the cooling load generated by the occupancy schedule. In this study, occupancy schedules are determined for various residential types. The operating modes of TABS for these residential types are estimated by using a dynamic computational simulation method. The results indicate that the operating modes of TABS can be determined by residential type and occupancy schedule. The load handled ratio by TABS is set up differently according to the cooling load profile obtained from residential type and occupancy schedule. By using TABS, energy consumption could be reduced by 20% compared to PTAC.
국내 여름철 기후조건에서 DOAS와 TABS 통합시스템 냉방운전시 실내온열환경 및 운전특성 평가
이윤선(Lee, YoonSun),이겨레(Lee, Keo-Re),정웅준(Chung, Woong June),임재한(Lim, Jae-Han) 대한건축학회 2018 대한건축학회논문집 Vol.34 No.11
To reduce the energy consumption of HVAC system in buildings, thermally activated building system(TABS) has been applied to low energy building because of energy efficient performance and reduction of peak load. DOAS coupled with a parallel sensible cooling could be promising because TABS handles sensible heat load only. The purpose of this study was to evaluate the indoor thermal environment and cooling operation characteristic of TABS with dedicated outdoor air system(DOAS) in Korea climate. Indoor thermal environment and operation characteristic of TABS integrated with DOAS are investigated at different TABS operation schedules and climate conditions by simulation tests. The result shows that the DOAS is more suitable for hot and humid climates. And also it show that the potential of intermittent operation of TABS.