The growth of automobile population in Kuala Lumpur is an important issue for car parking spacesespecially commercial buildings. The large multi storey and underground car parks seem to offer goodsolution nowadays. Undeniably, indoor air quality (IAQ) is a vital element in the underground car park. Itis so important due to its effects to the human beings.
To reduce the concentration of volatile organic compounds (VOCs) and formaldehyde emitted frombuilding materials and furnishings, it has been suggested that new buildings undergo a bake-out.According to the existing studies [3, 4], ventilation during a bake-out is believed to be essential forreducing the concentration of indoor air pollutants. For a practical use of bake-out, several ventilationstrategies such as natural and mechanical ventilation can be considered.
The purpose of this investigation is to know the present status of indoor air chemical pollution byVOCs in Japanese houses. The concentrations of formaldehyde, toluene, xylene, ethyl-benzene,styrene and acetaldehyde were measured in ten thousand built houses from 2000 to 2005. And thefollowing results were obtained. In 2000, the indoor concentrations of formaldehyde exceeded theguideline established by the Ministry of Health, Labor and Welfare of Japanese Government at thepercentage of 27%. And In the case of toluene the percentage was 12 %.
The indoor air quality management of the railroad passenger cabin is a hot environmental issue inmany countries. Especially, particulate matters are known to be harmful for lung and bronchus, andhigh concentration of carbon dioxide may cause headache and dizziness. Therefore, new regulation tolimit the particulate matters and carbon dioxide concentrations in the railroad passenger cabin is underpreparation in Korea. In this study, a new concept of an integrated novel air cleaning system for railroadpassenger cabin was suggested.
Ultraviolet germicidal irradiation (UVGI) uses UVC radiation produced by low pressure Hg vapor lampsto control biological air contaminants. Lamp UV output depends on multiple factors, includingaccumulated operating time (age) and the thermal effects of ambient air temperature and velocity.Additionally, the life of some lamp types depends on the frequency of on-off cycles.
This paper is concerned with a building situated in the west of Scotland which faces severe weatherconditions with high wind speeds and driving rain occurring frequently. This results in extensivedamage to the building fabric, and affects the internal climate which leads to a serious issue in buildingconstruction. In this study, a three-dimensional numerical model of airflow around the building isinvestigated. This investigation is part of ongoing research on wind-driven rain which has establishedthe importance of moisture stresses, wind flow and rain impacts on a commercial building.
The purpose of this investigation is to know the long term characteristics of VOC concentrations inhouses built before the building code in 2003 and to know the need of the countermeasures in thehouses were already built for example the improvement of the living habit, ventilation and buildingmaterials. The concentrations of VOCs were measured in these houses from 2000 to 2005. The resultsshowed that the concentration of formaldehyde decreased in the first year. After that the decline of theconcentration became invisible and the concentration changed only with the temperature.
Korean residential buildings have been airtight due to the energy economization plan since 1970’s energy crisis. As a result of this, the residential buildings have faced lack of ventilation and resulted in poor indoor air quality of buildings. In additio
The indoor air quality of railroad passenger cabin is often polluted by various pollutants. The pollutantssources of the passenger cabin are the passengers with their belongings, the inflowing outdoor air, andthe interior materials like floorings, seats, paints, and adhesives. In this study, we focused on thepollutants emissions from the interior materials, and carried out the characterization of emitted volatileorganic compound (VOC) in an environmental chamber. We could find out that a large amount ofvarious VOCs emitted from the surface of interior materials.
The indoor air quality management of the public places is gaining wide attention in Korea, because theindoor air quality of the public places are obliged to satisfy the guidelines suggested by Korean Ministryof Environment. According to this regulation, the railroad stations are regarded as public places whilethe passenger cabin of train is excluded. However, because the passengers spend more time in thepassenger cabin than in the stations, the indoor air quality management of the passenger cabin is moreimportant.
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