A note on the thermal comfort in displacement ventilated classrooms.

19 university students were asked about their thermal comfort while attending ordinary lessons in a displacement ventilated test room of typical classroom size. Two different ceiling heights were tested. Both the general temperature level and the strength of the vertical temperature stratification in the room increased continuously during the lessons due to the presence of the students, however slower with the higher ceiling.

An approach to natural ventilation conditions in urban apartment block buildings in Greece based on their architectural and constructional characteristics.

The multi-storey blocks which constitute the main type of building in Greek urban environments, have certain common characteristics. Those characteristics include the overall building dimensions and geometry, internal room dimensions, the materials used both in building construction and insulation, the size and the arrangement of the openings on the facades, the arrangement of the balconies, the position and dimension of the staircase etc.

Wind induced ventilation of light well in high rise apartment building - influence of bottom opening condition on airflow rate.

The light well is often designed in the center of high-rise apartment buildings in Japan. This light well is an empty space without ceilings or floors from the bottom to the top, and this well is called "Void" in Japan. In this well, the exhaust from the kitchen and the gas water heater is sometimes discharged to the corridors surrounding Void, and the exhaust can pollute the air in Void. To keep the air quality in Void clean, the natural ventilation is usually depended on.

Field measurement results of the airtightness of 64 French dwellings.

This work presents a field measurement study, investigating the airtightness of 64 French dwellings less than ten year old. Buildings have been classified according to the type of construction (masonry or timber frame) and of occupancy mode (multi- or single- family). Using a fan-depressurization technique, we assessed the air leakage rate of each dwelling, based on a theoretical flow model that relates the infiltration airflow rate to the differential pressure .

Results from a validated CFD simulation of a supply air "ventilated" window.

A currently unresolved problem in building design is the paradox between increasing demand for good thermal insulation, and the requirement for ample levels of ventilation, to maintain a healthy indoor environment. A possible solution to this problem is a supply air 'ventilated' window. This utilises an airflow between panes to pre-heat ventilation air to the building, and to reduce thermal convection losses, thus reducing the window Ue-Value.

Optimisation of the air flow performance of ventilated painting areas.

Painting large objects like cars or trucks usually generates high levels of pollution that can be eliminated by operating in a closed painting booth equipped with a blowing ceiling which produces a vertical ventilation flow. When the process does not allow the work to be carried out in a completely confined space (in the presence of a travelling crane for example) one of the only ways to remove pollution is the ventilated area. A basic ventilated area is merely a floor area of an industrial premises located above a pit equipped with an air exhaust system.

Partial cooling in a naturally ventilated building in the tropics.

The objective of this project was to provide cool working conditions for a small number of Customs Department staff in a turn-of-the-century heritage building in Town ville at 19° S latitude. A ducted air conditioning system was initially proposed but rejected as it would have been incongruent with the Victorian elegance of the space, as well as its high cost. As the working area in the three storey high space was surrounded by ornate timber counter and partitions, a scheme was developed using fan coil direct expansion units. These were located behind the counter to the public space.

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