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. 5 No. 4 (2008년 12월) 6건
1.
2008.12
구독 인증기관 무료, 개인회원 유료
The airms of this study are to examine the concentrations of volatile organic compounds(VOCs) in hospitals and to compare concentrations of VOCsin hospital with public facilities. Mean concentraton of total volatile organic compounds(TVOCs) in hospital was 103.97±87.39㎍/m3, that was lower than guideline of KMOE. The highest concentration of VOCs in hospital was 19.07±13.47㎍/m3 for Toluene. The distribution of VOCs in hospitals was log-normal distribution. As the result of Monte carlo simulation, the distribution of VOCs in hospitals was log-normal distribution with the exception of Toluene with normal distribution.
5,100원
2.
2008.12
구독 인증기관 무료, 개인회원 유료
Recently, it was under an obligation to install the VOCs recycling unit in the cleaners and the gas station to prevent from discharging VOCs emitted from the cleaners and the gas station. The objectives of this study was to investigate the VOCs recycling unit used thermoelectric module to recycle the organic solvent from the cleaners and after washing. The traditional way was the use of the VOCs recycling unit with the compressor. But the recycling unit has many weak points , noise, size, danger of fire, additional pollution and so on. In order to improve these weak points, it was developed the new VOCs recycling unit using the thermoelectric module through this study. The cooling block with 32 thermoelectric module was applied to cool the hot VOCs where comes to occur from the dryer in high temperature condition. Also a water-cooled equipment was used to remove the heat from the hot surface of thermoelectric module. The experimental results from new VOCs recycling unit shows that the maximum recovery rate of the unit was 83.2 % and the recycled VOCs' purity was 98 % or more. And the noise problem was solved by applying the thermoelectic module to the VOCs recycling unit.
4,000원
3.
2008.12
구독 인증기관 무료, 개인회원 유료
Test methods of Korea Air Cleaning Association (KACA) and Association of Home Appliance Manufacturers (AHAM) for particle cleaning capacity performance of an indoor air cleaner were compared in terms of the conditions of the test particle generation, the range of particle measurement and the calculation methods for particle cleaning capacity, and types of the test particles. The performance test was conducted in a 30 m3 chamber with the same test specimen and the test particles of each test were generated until the number concentration of 0.3 ㎛ particles reached 2.2 × 108 #/m3. The performance test results showed that the cleaning capacity with the particles of higher surface area and volume density, regardless of the type of test particles, was higher than with those of lower and the capacity from calculation with 0.3～1 ㎛ particles was higher than with 0.3 ㎛ particles. Moreover, the cleaning capacity with the calculation of KACA method was lower than with that of AHAM method in spite of using the same test specimen.
4,000원
4.
2008.12
구독 인증기관 무료, 개인회원 유료
the less-reported gaseous studies have primarily dealt with chemical process stream concentrations than indoor air quality (IAQ) concentration levels. Accordingly, the current study was conducted to establish the feasibility of applying visible-light-induced TiO2 doped with sulfur (S) element to cleanse toluene and ehtyl benzene at IAQ levels. The S-doped TiO2 was prepared by applying two popular processes and two well-known methods. For both target compounds, the two coating methods exhibited different photocatalytic oxidation (PCO) efficiency. Similarly, the two S-doping processes showed different PCO efficiency. These results indicate that the coating method and doping process are important parameters which can influence PCO efficiency. Meanwhile, it was found that the PCO efficiency of ethyl benzene was higher than that of toluene. In addition, the degradation efficiency of the target compounds increased as the relative humidity (RH) decreased. The PCO efficiency varied from 44% to 74% for toluene and from 68% to 95%, as the RH decreased. Consequently, it is suggested that with appropriate RH conditions, the visible-light-assisted photocatalytic systems can also become an important tool for improving IAQ.
4,200원
5.
2008.12
구독 인증기관 무료, 개인회원 유료
In this work, pellet type sorbents were prepared to control the low level indoor carbon dioxide with various physical compositions. In order to enhance the adsorption capacity, a few additives including alkali hydroxides were added to a commercial zeolitic sorbent by impregnation of alkali cation - Ca2+ through physical mixing and ion exchange. It was found that the binding materials such as dextrin or bentonite facilitating to form the granular sorbents would assist the adsorption capacity of sorbents. The ion exchange was more efficient for impregnation of alkalies, which showed better adsorption of gaseous CO2.
4,000원
6.
2008.12
구독 인증기관 무료, 개인회원 유료
Characteristics of commercial antimicrobial filter media for bioaerosol removal were estimated. A chitoasn/ medium filter, a catechin/HEPA filter, a silver/HEPA filter, a copper/pre filter, a electret cabin filter and a non-electret cabin filter were used for estimation. Filtration efficiency and antimicrobial efficiency was tested using Escherichia coli and Staphylococcus epidermidis. The electret cabin filter and the chitosan/medium filter showed the highest filtration and antimicrobial efficiency, respectively.
4,000원
