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김영탁(Young Tag Kim),배민정(Min Jung Bae),최경석(Gyeong Seok Choi),이용준(Young Jun Lee) 대한설비공학회 2021 대한설비공학회 학술발표대회논문집 Vol.2021 No.6
This study aims to establish guidelines for insulation design of new and remodeling buildings in the application of Vacuum Insulation Panel(VIP), which are high insulation thin film insulation. To this end, effective thermal conductivity that reflects thermal bridge phenomena occurring at the edge of VIP can be applied in the insulation design of VIP and vacuum insulation panel composite board. In this case, reasonable effective thermal conductivity is 1.5 times of the core thermal conductivity. In addition, the actual construction site was not applied as a single vacuum insulation panel, but was accompanied by protective materials. In this case, the insulation design specification of the vacuum insulation panel composite board was proposed, and the insulation thickness of a VIP composite board satisfying U-Value 0.15 [W/㎡K] or less is not more than 60[mm].
동절기 실내 과습방지를 위한 자동환기시스템 제어장치 개발에 관한 연구
김영탁(Kim, Young-Tag),조우진(Cho, Woo-Jin),이규남(Rhee, Kyu-Nam),황민규(Hwang, Min-Kyu),이성재(Lee, Sueng-Jae),차지형(Cha, Ji-Hyoung) 한국태양에너지학회 2012 한국태양에너지학회 학술대회논문집 Vol.2012 No.11
The surface condensation in winter season can be prevented with two methods. The first method is increasing surface temperature of space envelopes with insulation and the second method is decreasing indoor vapor pressure with ventilation. But additional insulation after construction completion is not easy. So, ventilation is more suitable to solve condensation problems. Generally, there are two types of ventilation methods in residential buildings. One is natural ventilation by opening windows, but the efficiency defends on occupant’s action whether they open the windows or not. The other is mechanical ventilation by recovery ventilator(air-to-air heat exchanger). This can provide not only regular ventilation but also high air quality and less condensation problems, if it can be controlled automatically. Therefore, it is necessary to develop automatic control device of ventilation system for preventing condensation with decreasing indoor vapor pressure. To achieve it, this paper suggests CPA(Condensation Preventing Algorithm) for the auto-control device of ventilation system.