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

Real time flow simulation is crucial in emergency management in buildings, such as fire or accidentalrelease of chemical/biological agents. Proper measures can be taken to minimize casualties withcorrect and timely prediction of the spread of the fire or contaminants. Although the traditional CFDsimulation in buildings is accurate, it is too time consuming. Multizone flow modeling is fast, but itsaccuracy is poor.

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.

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

Potentially-harmful chemicals could be released from many indoor materials, including consumerproducts and building materials, into indoor environments. Semi-volatile chemicals (SVOCs) due totheir lower vapor pressure, are often present, either primarily in indoor dust or in both indoor air andindoor dust. Several types of SVOCs have been measured in indoor air and indoor dust of Ottawaresidential homes.

How to model airflow discharged from diffuser is believed to be one of the key issues in ComputationalFluid Dynamics (CFD) applications to indoor air problem. Due to the complicated geometric feature andthe vortex-type airflow induced by swirl diffuser, simulating such a kind of diffuser is claimed to be achallenge. A simplified method of defining the boundary conditions at round swirl inlets is developedand introduced in this paper.

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

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.

Thermal sensation, acceptability and comfort are the important responses while evaluating the qualityof thermal environment. Experimental investigations into the relationships between these responseswere performed separately under uniform and non-uniform conditions that produced by local cooling.Thirty male Chinese subjects in college age participated the experiment and reported their local thermalsensation of each body part, overall thermal sensation, acceptability and comfort. Under uniformconditions, overall thermal sensation, acceptability and comfort are correlated closely.

The characteristics of climate in Japan are hot and humid in summer, with cold and dry winter. For thisreason, mold growing in rooms is common during summer period. On the other hand, in winter, due tospace heating, indoor environment is over-dry as a result of low humidity.