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윤재옥(Yoon Jae-Ock),김병렬(Kim Byung-Ryul) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.11
This phenomenon ? heat island effect ? used to be confined to the largest cities in Korea, especially Seoul. However, recently this phenomenon is starting to occur in even small and medium-sized cities which are also developing rapidly. In order to analyze the heat Island Effect in Cheon-an City, measurement points were selected in commercial areas and residential areas. We measured by continuous observation and recording temperature and humidity during 13days during the fall/middle season(2007.10.10-2007.10.22), and conducted measurements for 24days during the winter season(2008.1.15-2008.2.7). We selected 4 measurement points: the main street in the commercial central area, the Bus-Terminal, at a water-space, and at a park in the commercial area. Those points selected differed in terms of ground cover. We conducted our measurements using the instantaneous method. The instantaneous measurement was used during 4 time zones and at 4 different points. The measurement targets were temperature, humidity, air velocity. We also added surface temperature as another instantaneous measurement target. We analyzed and compared the measurement result values of the 4 points. According to our results, the temperature at the water space was the lowest during all measurement times. The highest temperature was recorded on the main street which was made of asphalt. The air velocity at the park was the lowest during all times and the temperature at the park was highest during the early morning.
윤재옥(Jae-Ock Yoon) 호서대학교 공업기술연구소 2006 공업기술연구 논문집 Vol.25 No.1
One of the sources of the sick building syndrome is a concentration of formaldehyde. The concentration of formaldehyde in the new apartment units at Cheonan city was measured summer time. The results of the field measurement were 328//g/nr1 〜 822//g/m3(average: 587//g/m3). It was over than the Korean standard level 210^g/m3. Interior constructions without ecological architectural material effect a lot, and increase the concentration of formaldehyde. And indoor air ventilation reduce the concentration of formaldehyde.
윤재옥,Yoon, Jae Ock 한국생태환경건축학회 2013 한국생태환경건축학회 논문집 Vol.13 No.4
Infiltration is air flow that occurs through cracks in buildings. According to level and kind of infiltration, the cooling load and heating load in buildings may increase. In this study I conducted field measurements to evaluate air tightness in 27 new apartment units. Field measurements for new apartments was the focus. For the de-pressurization method, the equipment utilized to gauge airtightness included KNS-5000C and KNS-4000 which were installed on the window in order to measure indoor air leakage. The results are summarized as follows. The average ACH50 of a $59m^2$ APT was 3.98, 3.82 for a $84m^2$ APT, and 2.73 for a $114m^2$ APT. The total average ACH50 of 27units was 3.51.
입주전 신축 공동주택의 휘발성유기화합물 및 폼알데하이드 실측에 관한 연구
윤재옥(Yoon, Jae-Ock) 대한건축학회 2013 대한건축학회논문집 Vol.29 No.7
Recently the problem of indoor air quality in new apartments has become a serious issue. Therefore, this study targets the main causes of Sick House Syndrome caused by VOC (formaldehyde, benzene, toluene, ethylbenzene, xylene, styrene). We obtained the indoor air quality data for the two types of new apartments that comprised 16 units. The results are summarized as follows. 1) The average formaldehyde concentration was 527.3㎍/㎥, benzene was 1.8㎍/㎥, toluene was 101.9㎍/㎥, ethylbenzene was 9.5㎍/㎥, xylene was 9.4㎍/㎥, and styrene was 5.5㎍/㎥. 2) Indoor air quality analysis results showed that the formaldehyde concentration exceeded the recommended standard. However, other concentrations of volatile organic compounds satisfied indoor air quality recommendation standards.
중소도시(아산시)의 중간기와 동절기 도시열환경 실측 연구
윤재옥(Yoon Jae-Ock) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.12
The temperatures in city centers have been increasing in recent years. Artificial .areas in cities are increasing as urban development intensifies. This phenomenon is happening in medium-size cities as well as in big cities. To analyze this phenomenon, I carried research activities in Asan City. Field measurement points were selected in downtown areas and residential areas. I carried out both continuous measurements and instantaneous measurements. The continuous measurement points were in the downtown area((1),(2),(3)) and residential area((4),(5)). Temperature and humidity were recorded over days (Autumn season: 2008.10.16∼2008.10.18; Winter season: 2009.02.16∼2009.02.18). The instantaneous measurement points were selected at a crossroad, a small park, and near a water space in the downtown area and were measured during 4 time zones. I analyzed the continuous measurement data and instantaneous measurement data in conjunction with data from the Korea meteorological Administration (K.M.A.) near by Asan City. The results of the study are as follows. The order of temperature at the continuous measurement points in Autumn was (1) > (2) > (3) > (5) > (4) > K.M.A.. The order in Winter was (1) > (3) > (2) > (5) > (4)and K.M.A.. The instantaneous measurement temperature at peak time was recorded in the following order : the crossroad > the small park > around the water space.
CFD 시뮬레이션을 이용한 계절의 주풍향, 부풍향별 도시 기류환경 예측 연구
윤재옥(Yoon Jae-Ock),주재성(Joo Jea-Sung) 대한건축학회 2011 대한건축학회논문집 Vol.27 No.1
At the city, outdoor wind environment of building circumstance is often changed because of high-rise buildings. We made three models, one of them is a low-rise residential area in C city, another is a center commercial area in C city, the other is a mid-low residential area in S city. To simulate wind environment of these three areas, we used CFD(Computational Fluid Dynamics) method. For the CFD simulations, boundary conditions was selected for winter season(January) and middle season(October). Mean wind velocity, prevailing wind direction and secondary prevailing wind direction of Korea Meteorological Administration Data was used for the boundary conditions. Center area of commercial zone in C city was modeled as the present layout. The same Meteorological Administration Data was used for CFD simulation at two cases in city C. The direction of air flow around buildings was changed by layouts of apartments and buildings. Sometimes the wind speed increased a lot, and sometimes the air around buildings was still. We analyzed wind environment around buildings with CFD results at low-rise residential area in C city and in S city.
대학캠퍼스 외부공간의 가로등 설치에 관한 LCC분석 연구
주재성(Joo Jae-Sung),김호영(Kim Ho-Young),김병렬(Kim Byung-Ryul),정종림(Jung Jong-Rim),윤재옥(Yoon Jae-Ock) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
This study evaluates the economic efficiency of road lamps in the University Campus with a Life-cycle cost(LCC) technique. In order to determine the most suitable illumination facilities, Induction lamp, Metal halide lamp and Natrium lamp is simulated. We study characteristics of each lamp system, which are illumination efficiencies and costs. Initial investment cost of an induction lamp is higher than two other alternatives. However, total cost of Metal halide lamp is lower than to other alternatives.