As a part of our research on energy conservation and thermal comfort of detached houses havingcentralized HVAC systems, study with numerical simulation techniques was started. The model is thehouse that has mechanical supply and exhaust ventilation systems with a centralized air duct equippedwith a sensible heat exchanger and has large return air (4 times an hour). The parameters in thesimulation are the set point temperature and outdoor air flow rate.
There are materials and instruments which can be various pollution sources of indoor air quality in aroom. Recently, volatile organic compounds are paid attention as one of main air pollution sources.There are a lot of pollutants in a room else VOCs, therefore it is important to make a comprehensiveassessment of indoor air. We prepared to measure multi-component of indoor air quality. In this report,we described measured results that we measured the Multi-Components of indoor air quality at mainpublic facilities in Sapporo and Nagoya cities.
The avoidance of mould growth in dwellings is of worldwide concern. In England and Wales, therelevant Building Regulations guidance document recommends ventilation provisions to control bothmoisture and other pollutants in buildings. The performance criterion for moisture states that thereshould be no visible mould on external walls in a properly heated dwelling with typical moistureproduction.
The air quality in laboratories has a profound affect on occupant health and safety. Reducing the timeof exposure and the amount of contaminant can improve the occupant environment and have directimpact on health and safety. In this study, a novel ventilation system which introduces benchexhausts is proposed. The system offers the potential for application in new and existing researchlaboratories to effectively remove airborne contaminants at the bench using a technology that is costeffective and efficient.
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
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