As the world trade field is expanding, international standard of air filter is urgently needed. At present,China is undergone its revising the national standards, therefore, the development of major air filterstandards between America and Europe is compared here. Diameter distribution of KCl aerosol used inASHRAE52.2 is similar with atmospheric dust, but research for test dust representing actual conditionis still needed. Concepts for electrostatic discharge between Europe and America are different, andclassification upon minimum life efficiency (MLE) is recommended.
In large enclosures such as gymnasiums, it is difficult to control the air temperature and create a comfortableclimate for people with respect to the heating condition. There are two main reasons that the air temperature in anoccupied area is not increased efficiently in large enclosures. 1) Hot supplied air goes up and stays in the upperarea due to buoyancy and it takes long time to reach the lower occupied area. 2) The heat capacity of the buildingstructure affects the air temperature and cold air stays in the lower area.
Asphalt fume from Aluminum Industries is one of pollutants, which must be decontaminated in theventilation systems. In this paper, two feasible structures of adsorbers were designed: the venturi-typeadsorber with the small-diameter throat pipe and that with the flow-guiding cone. Then these two kindsof adsorbers were optimized according to the factors which influence the diffusion of the adsorbentparticles.
Indoor air quality has caught attention of the Netherlands Ministry of Housing, Spatial Planning and theEnvironment and a large campaign was started in 2005 to make the public aware of the dangers tohealth as result of poor ventilation in housing. Indoor Air Quality and thermal climate in schools isproblematic in many countries. The status quo in the Netherlands is presented. The goal of a firststudy was to evaluate the performance of exhaust-only ventilation systems and in 5 schools weremeasurements undertaken.
Whether one considers the issues related to office workers’ well-being and productivity, or the issues from an energy and environmental perspective, there are clear evidences in favor of improving the quality of office built environment. This paper is con
Whether one considers the issues related to office workers’ well-being and productivity, or the issues from an energy and environmental perspective, there are clear evidences in favor of improving the quality of office built environment. This paper is con
With growing concerns about the impact of indoor environment quality on office workers’ well-being and productivity, coupled with the concern over the rising energy costs for space heating and cooling in office building sector, ventilation principles that
An Earth-to-Air Heat Exchanger (ETAHE) uses the ground’s thermal storage capacity to dampen ambient air temperature oscillations by delivering the outdoor air to the indoors through a horizontally buried duct. Most ETAHE simulation models assume the airfl
In recent years, the aspect and behavior inside a bathroom and an appurtenant changing room havebeen changing. With these changes, the thermal insulation quality of a dwelling has improved, so itseems that the amount of moisture generated in a dwelling has changed. In this study, amount ofmoisture produced in a bathroom and a changing room was surveyed in order to grasp the thermal andhumid environment in bathroom and a changing room. From the result of the survey, it was found thatthe amount of moisture in bathing was bigger than before.
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