The National Institute of Standards and Technology (NIST) is conducting a study on the indoor air quality (IAQ) impacts and engineering solutions related to the transport of pollutants from attached garages to residential living spaces. Natural or fan-induced pressure differences across air leakage paths in house-garage (HG) interfaces can result in the transport of the contaminants generated in garages into adjacent living spaces.
With radiant heating, it is possible to set room air temperature lower than when heating withair-conditioning because the human body is heated by a radiation. As room air temperature decreases,heat loss from walls and windows decreases, and so does the ventilation load. It is often said that theradiant heating, such as floor heating saves energy. This study calculates heat flow at the windows andthe walls of a living-room using computational fluid dynamics (CFD).
The purpose of this paper is to analyze the indoor thermal environment and ventilation efficiencycreated by various heating and ventilation systems using CFD. In the case of one room, the value ofmean local air exchange efficiency????*1 of breathing zone*2 becomes about 1.0, because fresh airspreads completely in the room when air-conditioners are operated. In contrast, when air-conditionersare not operated, the mean ?? becomes smaller than 1.0, and the area of poor ventilation efficiencybecomes large.
The purpose of this study is to investigate the actual conditions of the energy consumption of varioustypes of inhabited houses (e.g., wooden detached houses and condominiums) in the Niigata area. Afield survey was carried out from November 2002 to March 2005, and the energy consumption levelsfor the various uses were measured continuously. This paper describes the energy consumptions of alluses (e.g., electricity, oil, gas) in the house types.
For that study, IAQ measurements were carried out in 3 residential Singapore dwellings. CO2 levels were higher in air-conditioned bedrooms than in naturally ventilated bedrooms. Another survey demonstrated that almost all occupants using air-conditioners while sleeping presented one or more SBS symptoms than when using natural ventilation.
The use of a combined methodology of wind tunnel experiments and CFD simulations in order to study the potential of using active stack to enhance natural ventilation in residential apartments in Singapore is demonstrated in this paper. Comparison between the results obtained from the experiments and those from the simulations has been made.
This paper presents an extensive field survey conducted in residential naturally ventilated buildings in Indonesia. The data gathered has been analyzed and revealed that the Predicted Mean Vote equation predicted a warmer thermal perception compared to what people really felt. Under hot and humid tropical climate, people in free-running buildings had a preference for cooler environment and for higher wind speed.
The aim of the study is to evaluate the possibility of ensuring an indoor climate within an acceptable range thanks to the use of large exposed massive wood surfaces. The description of the experimental study performed in four occupied flats of a multi-storey residential building in Sweden is made in this paper along .The analysis of the in-situ recordings is presented too.
A recent survey study suggested that elderly people’s lifestyle and building + dwellings factors exposed them to an uncomfortable and poor environment regarding indoor air quality. In order to confirm the qualitative statements of this study, measurements
The aim of that study is to produce guidance in adequate ventilation in new domestic buildings. The paper gives a description of the development and application of a method for measuring the mean ventilation rate in occupied homes with the measurement of indoor air pollutants. Results are presented.
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