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.
The effectiveness of natural ventilation, i.e. its ability to ensure indoor air quality and passive cooling ina building, depends greatly on the design process.
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.
A floor heating, so called ‘Ondol’, is widely used in korea, and it has been known that Ondol provids good thermal environment. [1] However, the impact sound through floor is great and ventilation rate depends on infiltration in rooms where the Ondol is a
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.
In order to facilitate rational development on the efficient new ventilation system with new detectorsagainst the health problems caused by VOC in residential buildings, authors studied to clarify the actualIAQ conditions around occupied area. To grasp the contemporary circumstances andtransfer-mechanisms of VOC in houses, the actual data regarding the pollutants and its movementwere collected in 9 detached houses in Tochigi prefecture. In this paper, investigated results for indoorthermal environment, ventilation and indoor chemical pollutants are described.
In North America, there are ~140 million homes and 4 million public buildings. More than one fifth of theenergy use in Canada is used to condition air whether from the cold in much of Canada or providecooling and heating where summers are hot and humid and winters are cold. To reduce greenhousegases and improve housing affordability, this energy use needs to be reduced. In 1981, the Federal andProvincial governments understood that science was needed to inform building codes in relation tooccupant health.
In this paper air distribution solutions aiming to lower air velocities and good temperature control arestudied by measurements in 6 schools and temperature simulations. Air velocity measurementsshowed good performance of duct and ceiling diffusers which provided maximum velocities less than0.2 m/s and can be highly recommended for classrooms. The wall diffusers were clearly not suitable forclassrooms due to high velocities up to 0.43 m/s.
In this study, we monitored the carbon dioxide (CO2) concentration in a high-speed train passengercabin by the in-situ non-dispersive infra-red (NDIR) method in order to investigate the effects of variousfactors, such as number of passengers and the presence of tunnels on the CO2 concentration levels.We found that the CO2 concentration was strongly related with the number of passengers andcorrelated with the presence of tunnel regions. The CO2 concentration increased with increasingnumber of passengers and increasing tunnel residence time.
Field measurements of the indoor climate have been carried out in 128 lightweight timber-framedetached houses in Finland and in Estonia during the years 2002-2005. The temperature and relativehumidity were continuously measured in bedrooms, living rooms and outdoors for each house at 1-hourintervals over a 1-year period.
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