간행물
한국실내환경학회지 KCI 등재후보 Journal of Korean Society for Indoor Environment
- 발행기관 한국실내환경학회
- 자료유형 학술지
- 간기 계간
- ISSN 1738-4125 (Print)2287-7509 (Online)
- 수록기간 2004 ~ 2013
- 주제분류 공학 > 환경공학 공학 분류의 다른 간행물
- 십진분류KDC 547DDC 697
권호리스트/논문검색
Vol. 7 No. 4 (2010년 12월) 6건
1.
2010.12
구독 인증기관 무료, 개인회원 유료
Indoor and Outdoor levels of Houses for VOCs and NO₂in Industrial Complex Area and Agricultural Area
This study presents residential indoor and outdoor exposure concentrations distributions of volatile organic compounds (VOCs, benzene, toluene, xylene) and nitrogen dioxide (NO2) in industrial area (case) and agricultural area (control) during 5 days. Concentrations of VOCs and NO2 were measured with passive samplers in residential indoor and outdoor. Most of benzene, toluene and NO2 mean concentrations in case area were higher than those in control area. Considering the indoor and outdoor ratios (I/O) were higher than 1, the residence might be have the sources of indoor air pollutants such as smoking and using of gas range. Residential indoor concentrations of benzene, toluene, and NO2 with indoor smokers were higher than those and without indoor smokers. In conclusion, it is suggested that personal exposures to air pollutants might be affected by indoor sources as well as outdoor pollutants emitted from industrial complex, and indoor air quality and outdoor air quality should be simultaneously considered to reduce the personal exposure to air pollutants.
4,200원
2.
2010.12
구독 인증기관 무료, 개인회원 유료
The purpose of this study is to estimate concentration and emission unit of ammonia and hydrogen sulfide released from domestic chicken buildings by field investigation. Mean concentrations of ammonia and hydrogen sulfide emitted from chicken buildings were 18.25(±4.78)ppm and 807.53(±526.17)ppb for caged layer house, 14.48(±4.13)ppm and 644.82(±312.48)ppb for broiler house, and 6.16(±2.02)ppm and 284.75(±232.08)ppb for layer house with manure belt, respectively. Mean emission coefficients of ammonia and hydrogen sulfide were 0.951(±0.131) g hen-1h-1 and 2.956(±0.968) mg hen-1h-1 based on head whereas they were 0.575(±0.082) g m-2h-1 and 12.44(±3.536) mg m-2h-1 based on time. In conclusion indoor concentration and emission coefficient of ammonia and hydrogen sulfide were highest in caged layer housed, followed by broiler house and layer house with manure belt.
4,000원
3.
2010.12
구독 인증기관 무료, 개인회원 유료
The class rooms for vocal music lessons at the college of music should be prepared with acoustic performance having similar quality to a real theater. However, most of domestic music colleges used too many sound absorbing materials, so that a sound is too dry and poor, which makes a singer to increase the sound level. Furthermore, because of this acoustic characteristics, at a theater a singer comes to hear a total different sound of his own song. For this, students and professors are in trouble during a lesson. At the study from this point of view, the finishing materials were changed to have the best sound condition by site measurement and acoustic simulation. It is assumed that the study result above will be used as an effective document to improve acoustic performance.
4,200원
4.
2010.12
구독 인증기관 무료, 개인회원 유료
Since it has been reported that asbestos fibers cause serious health problems such as lung cancer, malignant mesothelioma and other related diseases, it turns into social issue leading to a number of studies for characterizing asbestos found in the indoor environment. Among the established methods for detecting asbestos fibers, phase contrast microscopy (PCM) method is widely used as it dose not require complicated process nor high-priced equipments. However, PCM method is hard to define a sort of asbestos and to detect tiny asbestos fibers. We developed an image-based high-throughput microscopy (HTM) for automated counting of asbestos fibers which were distinguishable from the spherical particles. HTM method enabled us to analyze asbestos fibers both automatically and quantitatively. Test samples of chrysotile, amosite and crocidolite, which are frequently detected in Korea, were used in this study and comparisons were made between concentrations of asbestos fibers measured by manual counting method and HTM method. Application of HTM system can be extended to various areas such as malaria diagnosis, rare cell detection and bacterial colony counting.
4,000원
5.
2010.12
구독 인증기관 무료, 개인회원 유료
Recently a high-rise building is built in many places. However some problems are occurred in the high-rise buildings. Especially, at the case of the kitchen exhaust using vertical shaft, the kitchen exhaust fan sometimes can not work normally because of unbalance of pressure inside the shaft. In this study, under the assumption that the kitchen exhaust system applied uniformly can not cope with the various changes of the outside environment, the vertical sectional characteristics of a kitchen exhaust using vertial shaft is analyzed. Outside temperature, number of the floors and operating ratio of the vertically connected fan are selected as major parameter. And it is analyzed by a network simulation method. In case of 60 stories building, the standard deviations are 115.6 at the second floor, 74.9 at the 30th floor and 20.7 at the 60th floor. The standard deviation at the lower part is about 5.5 times than the upper part. So the results of the simulation show that the kitchen exhaust system should be installed considering the vertical sectional exhaust characteristics.
4,200원
6.
2010.12
구독 인증기관 무료, 개인회원 유료
The purpose of this study was to assess an alternative method to characterize indoor environmental factors by multiple indoor and outdoor measurements. Using a mass balance model and regression analysis, penetration factor and source strength factor were calculated using multiple indoor and outdoor measurements. This study was performed in 30 selected apartments in Seoul, Asan, and Daegu area which were constructed within 4 years and over 4 years, to measure the concentration of NO2 from July, 2004 to September. The results of this study are as follows. The average concentration of NO2 in Seoul, Asan, and Daegu area in the apartment constructed within 4 years are nitrogen dioxide 48.01㎍/m3 and in the apartment over 4 years are nitrogen dioxide 46.54㎍/m3. Mean ratios of indoor to outdoor NO2 concentrations are Seoul 0.99, Asan 0.83, Daegu 1.18. The deposition constant and the source strength of NO2 were 0.97±0.55 hr-1 and 16.33±12.30 ppb/h, respectively. In conclusion, indoor environmental factors were effectively characterized by this method using multiple indoor and outdoor measurements.
4,000원
