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주택모델 에너지 해석을 통한 벽체단열형식별 온실가스 전과정평가
오근숙,정근주,임영빈 대한건축학회지회연합회 2006 대한건축학회연합논문집 Vol.8 No.4
Buildings are high consumers of energy and therefore have a significant impact on the global environment. The aim of this study is to determine ways to reduce the Green House GasedGHG) given off by the heating energies of model building and the embodied energy of Insulation within walls. Compared with the apartment and a housing, because a housing surrounded 4 side of air, energy loss of the housing is more than the apartment's. The tool of this study is EnergyPlus program and IPCC's Life Cycle Assessment(LCA) method. According to this study, an GHG emissions of the Exterior Insulation-THK 400mm Type is showed approximately 12 % reduction in GHG for heating in this housing model lower than the type of non Insulation within walls. But when the Embodied energy is included, The Exterior Insulation-THK 50mm Type's GHG emissions is approximately 10% lower than non insulation structure in the LCA including Embodied energies. Finally, this paper presented a method of comprehensive environmental load which is related to the passive design.
오근숙,정근주,서민호,임영빈 한국원예학회 2011 Horticulture, Environment, and Biotechnology Vol.52 No.3
This study aims to suggest an improved experimental method to reveal the ability of indoor plants to reduce CO2 concentrations, as well as to display the individual CO2 reduction characteristics of various indoor plants in accordance with this improved method. In previous studies, experiments were conducted under the condition in which the CO2 concentration in the experimental chamber is set only once to a high initial level of 1,000 ppm. However, in real conditions, CO2 concentration gradually increases in a room after the occupants enter. Hence, the existing experimental method can be improved in view of “light saturation and CO2 compensation”. Accordingly, in this study, the CO2 reduction characteristics of indoor plants under 2 conditions used in the existing method of measurement (Case 1) and the condition in the new method, which considers that CO2 concentration gradually increases through the respiration of experimental animals (Case 2)-were measured and compared against each other. For all plant samples, the level of CO2 reduction was higher in Case 2 than in Case 1, and the rate of CO2 reduction increases with time. The inflection point of CO2 concentration appeared at leaf areas of 9,000 cm2 in peace lily and areca palm, and 6,000 cm2 in weeping fig.
온습도 및 피부온도 日記를 통한 중간기(봄) 대학생의 열쾌적 특성 관찰
오근숙,조은경,정근주,임영빈 대한건축학회지회연합회 2008 대한건축학회지회연합회 학술발표대회논문집 Vol.2008 No.1
The enhancing of Thermal comfort(TC) was a physical issue of the student performance in the classroom. In generally, the HVAC system was not operated for the university classroom during spring season in the temperate region. However, there often was occured uncomfortable TC in the university classroom because recently there was high daily temperature range that effected the Climate Change. Therefore, it is a necessary work and research that enhancing of TC in the classroom at the midseason(spring). But, there was insufficiency data for the TC of near the university student body. This study aim is to enhancing data for improvement of TC in the university classroom through the observation on characteristic of TC of university student during spring season through diaries of skin temperature and ambient temperature and humidity. In conclusion, sometimes midseason(spring) was also necessary HVAC caused by the results what subject's skin temperature and thermal sensation scale get to be large range by the Climate Change, individual activity and over cooling. Therefore, research about HVAC for midseason(spring) was necessary.
오근숙(Oh, Geun-Sug),정근주(Jung, Gun-Joo) 한국건축친환경설비학회 2012 한국건축친환경설비학회 학술발표대회 논문집 Vol.2012 No.10
For improvement of indoor air quality, the laboratory measurements of reduction effects of the air pollutants and thermal stresses from a potable butane gas space heater by indoor plants(leaf area:0%, 100%, 200% of area chamber) have been conducted in an 13.8 ㎥ environmental chamber. This experiment presents that the potable butane gas space heater emits CO₂, CO, and HCHO continually into the indoor space, especially concentrations of CO₂, CO are over standard for control and indoor plants reduce air pollutants from the heater, control thermal environment factors such as air temperature and relative humidity.
이산화탄소 발생패턴에 따른 실내식물의 저감효과 실험연구
오근숙(Oh Geun-Sug),정근주(Jung Gun-Joo),임영빈(Im Young-Bin) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.4
The purpose of this study was investigating the reduction effects of Carbon Dioxide(CO₂) with the indoor plant(IP) through the conditions same as real world. First of all, we conduct literature review and measurement survey to suggest the occurrence pattern of CO₂ in office. And then we apply the occurrence pattern of CO₂ like an actual office on small chamber test. This experiment condition was different from the precedent studies which fix the initial concentration of CO₂(1000ppm). Because the condition of occurrence pattern of CO₂ was continually increase in the actual office. The result of this study was following. IPs will do better reduction of CO₂ under the occurrence pattern of CO2 has steadily increased every time. In other words, we expect that the effect of IPs to reduce contaminant in real world is more effective than the precedent studies.
여름철 옥외에서 작업복 표면온도 및 인체 피부온도 특성
오근숙(Oh Geun-Sug),서민호(Se Min-Ho),정근주(Jung Gun-Joo),임영빈(Im Young-Bin) 한국건축친환경설비학회 2010 한국건축친환경설비학회 학술발표대회 논문집 Vol.2010 No.10
The outdoor worker and leisure sportsman suffer from the heat stress in a summer day. For reduction on their heat stress, this research presented the human skin and surface temperature for Working Clothes(WC), T-shirt(TS), Passive Cooling Jacket(PCJ) in outdoor in a hot summer day. When the clothes are hung on the hook with no human bodies, the surface and inside temperatures of PCJ were lower than WC or TS. When the subjects wore clothes, the chest and the back skin temperatures of subjects who wore the PCJ were lower than with the WC or TS. This research expects that data measured in this study contributes for the reduction of worker's heat stresses in summer days.
오근숙(Oh, Geun-Sug),정근주(Jung, Gun-Joo) 대한건축학회 2012 대한건축학회논문집 Vol.28 No.7
This study focuses on the relationship between indoor plants and Indoor Air Quality(IAQ). And the improvement of IAQ has caused enhancement of potential work performance. So we conducted to investigate improvement effects of IAQ, occupants’ Perceived Air Quality(PAQ), Sick Building Syndrome(SBS) symptoms, and learning concentration with the indoor plants in two actual university classrooms, especially because university classroom is required high levels of physiological and psychological work. Each experiments were conducted for about 3 hours(plants absent:75min.-break time:20min.-plants present:75min.). After break time, we arranged the indoor plants(Areca palm) approximately 15.87% of floor area by the window in the classroom and then we measured the increasing level of indoor air contaminants, surveyed PAQ, SBS symptoms and learning concentration during a semester(March~June). From the result of this study, university classrooms need to improve IAQ, especially CO2 concentration that was continually increase by respiration of students. The increasing level of CO2 concentration without the indoor plants was 50% more higher than with them. And PAQ(Freshness 400%, p=0.03; Acceptability 140%, p=0.04), SBS symptoms(108%, p=0.49), Learning concentration(120%. p=0.62) of students actually were improved by the indoor plants.