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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.
$18^{\circ}C$ 환경에서 축전지형 발바닥가열기 착용 피험자의 온열반응
정근주,오근숙,Jung, Gun-Joo,Oh, Geun-Sug 대한건축학회 2012 대한건축학회논문집 Vol.28 No.6
For the building energy conservation, the energy authorities recommended that the manager of building should keep the indoor temperature below $18^{\circ}C$ in the public spaces, in the large scale building during heating season. The occupants in the spaces don't feel the thermal comfort because Predicted mean vote(PMV) of the spaces temperature below $18^{\circ}C$ is approximately -1.0(slightly cool). Recently, the companies of wears supply the rechargeable heating insole with the lithium ion battery to the people in the cold environment. This research aim is to present of thermal responses when the occupant wearing the rechargeable heating insole in the spaces temperature below $18^{\circ}C$ through it experiment on the thermal responses of subjects wearing rechargeable heating insole as well as it evaluate on the variation of thermal responses of subjects in the climate chamber. The variations were Thermal sensation vote(TSV) with ASHRAE 7 and 11 scales, Mean skin temperature(MST) with ISO 9886-2004, Sole skin temperature(SST) of the subjects as well as PMV of environmental chamber. The research presents that TSV-7scale, TSV-11scale, MST of the subjects wearing heating insole were not increasing during the experiments. As contrast this, SST of the subjects were $1.6^{\circ}C$ higher than the subjects not wearing heating insole. In conclusion, the rechargeable heating insole with the lithium ion battery influence the SST increasing but it can't influence the whole body thermal response at the $18^{\circ}C$ environment.
실내식물 유무에 따른 대학 강의실 IAQ 개선효과와 재실자 PAQ에 관한 연구
정근주(Jung Gun-Joo),오근숙(Oh Geun-Sug),서민호(Seo Min-Ho) 한국건축친환경설비학회 2011 한국건축친환경설비학회 학술발표대회 논문집 Vol.2011 No.10
The purpose of this study is investigating the improvement effects of Indoor Air Quality(IAQ) and Occupants' Perceived Air quality(PAQ) with the indoor plants in university classrooms. First of all, we conduct the measurement survey of IAQ to its original condition in this classrooms. In other words, there is no indoor plants. And then we find out that this classrooms are need of improvement in IAQ. It is especially important to reduce CO2 concentration that was continually increase by respiration of students. So we arranged indoor plants by the windows, and we measured the increasing level of CO2 according to existence of indoor plants. The result of this study is following. The increasing level of CO2 nonexistence IPs was fore times more higher compared to existence of IPs. And PAQ of students actually improve by IPs.
18℃ 환경에서 축전지형 발바닥가열기 착용 피험자의 온열반응
정근주(Jung, Gun-Joo),오근숙(Oh, Geun-Sug) 대한건축학회 2012 대한건축학회논문집 Vol.28 No.6
For the building energy conservation, the energy authorities recommended that the manager of building should keep the indoor temperature below 18℃ in the public spaces, in the large scale building during heating season. The occupants in the spaces don’t feel the thermal comfort because Predicted mean vote(PMV) of the spaces temperature below 18℃ is approximately -1.0(slightly cool). Recently, the companies of wears supply the rechargeable heating insole with the lithium ion battery to the people in the cold environment. This research aim is to present of thermal responses when the occupant wearing the rechargeable heating insole in the spaces temperature below 18℃ through it experiment on the thermal responses of subjects wearing rechargeable heating insole as well as it evaluate on the variation of thermal responses of subjects in the climate chamber. The variations were Thermal sensation vote(TSV) with ASHRAE 7 and 11 scales, Mean skin temperature(MST) with ISO 9886-2004, Sole skin temperature(SST) of the subjects as well as PMV of environmental chamber. The research presents that TSV-7scale, TSV-11scale, MST of the subjects wearing heating insole were not increasing during the experiments. As contrast this, SST of the subjects were 1.6℃ higher than the subjects not wearing heating insole. In conclusion, the rechargeable heating insole with the lithium ion battery influence the SST increasing but it can’t influence the whole body thermal response at the 18℃ environment.