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In approach to alleviating the problems causing ‘sick building syndrome’, many types of indoor air pollution removal products have been developed. In the various performance evaluation methods for these removal products, the pollutant constant-emission te

In order to determine the causes of SHS (Sick House Syndrome), a field survey on indoor air quality and occupants’ health conditions was investigated in 60 houses in Japan. As a result, when houses that more than one occupant are “SHS” count as “Sick Hous

Blinds are used widely in numerous buildings to conserve energy and provide for occupants’ comfort in the perimeter zone. But manual or motorized blinds are limited in their ability to reduce energy consumption because occupants must control blinds themse

The interaction of flows in rooms ventilated by active chilled beams and its importance for the air distribution and occupants’ thermal comfort is studied in a full-scale room experiments. The impact of the supplied flow rate of primary air (1.5 L/s/m2 an

Conventional multiple types of perfluorocarbon tracers use the number of gases equal to the number of zones (n). The possible n×n+n airflows are solved from the mass balance of the gas and the airflow balance. However, some airflows may not occur because

There is increasing number of people suffering from “Sick-building Syndrome” in Japan. Therefore, we started “Chemi-less Town Project”, building a model town in which buildings are constructed with fewer chemicals. In this paper, we introduce the backgrou

Three indices for describing occupants’ activities in the office rooms are defined: 1) occupant office (OO) index defines the time occupant spends in a room; 2) occupant desk (OD) index defines the time occupant spends at the working place; 3) occupant je

The requirements for thermostats are increasing in the U.S. for a combination of reasons. Firstly,energy conservation and Demand Response programs are requiring thermostats to have morecomplex controls that can communicate with electric utilities. Other pressures are caused by theincreasing sophistication in U.S. homes such as systems for mechanical ventilation, economizers andventilation cooling that interact with operation of heating and cooling systems via thermostat controls.In order to meet these challenges, U.S.

The objective of this paper is to present the contaminant removal efficiency of a prototype air cleanerusing the adsorption/desorption effect and to investigate the practicality of this air cleaner. Toluene andformaldehyde were used as pollutant sources and were emitted at a constant rate in a test chamber.Effects of the number of sorption units, the operational time and mode on the contaminant removalperformance were examined. Sorption materials that were evaluated were a porous material, zeolite,pumice stone, and hydro-corn.

The summer natural wind environments inside an airport terminal building under two cases aresimulated by the method of computational fluid dynamics (CFD) in this paper. The two cases havedifferent opening areas for glass curtain wall. Case 1 has the opening ratio of 10% while Case 2 has30%. The paper also uses DeST to simulate the annual natural temperature distribution under twokinds of opening ratio in a whole year.