LoginThe uncertainty of measurement results of air velocities in air-conditioned rooms generally is very high. A considerable part of the measurement errors are caused by the evaluation methods.
Bibliographic database Airbase
AIRBASE is the Bibliographic Database of the AIVC. It contains publications and abstracts of articles related to energy efficient ventilation. Where possible, sufficient detail is supplied in the bibliographic details for users to trace and order the material via their own libraries. Topics include: ventilation strategies, design and retrofit methods, calculation techniques, standards and regulations, measurement methods, indoor air quality and energy implications etc. Entries are based on articles and reports published in journals, internal publications and research reports, produced both by university departments and by building research institutions throughout the world. AIRBASE has grown and evolved over many years (1979 to present day, over 22000 references and 16000 documents available online). For most of the references, the full document is also available online.
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Airflow inside air-conditioned rooms needs to be determined experimentally using test rooms. The test room dimensions vary because a test room must represent a section which is characteristic of the original room dimensions.
The first part of the study describes thermography generally as a method for non-destructive testing of a building envelope for thermal and air tightness properties.
Until recently, natural ventilation was adequate for the indoor air environment of buildings. Today, with added insulation and tighter building envelope standards, indoor air quality is more dependent on mechanical means.
Sets of hourly data, representing the long term mean of both temperature and solar radiation, have been prepared for 21 U.S. metropolitan areas.
Reviews different lightweight structures' abilities to store heat. Shows a cutaway drawing of a single-family dwelling illustrating how stored heat is distributed. Relates heat storage capacity to structural density.
Notes that as houses become tighter, adventitious ventilation decreases. Discusses attitudes to varying degrees of tightness. Explains introduction of the supply exhaust system which comprises air supply, air exhaust and heat recovery.
The `Swedish Attic' has the ceiling to the upper floor self-supporting with a rafter roof supported by posts which rest on the upper ceiling.
Describes current projects for developing rational methods and systems for energy inspections in existing buildings, which is currently lacking.
Points of view from Norwegian Building Research Institute resulting from nationwide investigation into building airtightness. Notes significance of airtightness conditions in apartments and single family dwellings.
Reviews factors affecting indoor air quality, including the effect of mildew, high concentrations of microorganisms, radon, light air ions and chemical pollutants(especially formaldehyde).
Reviews important sources of indoor air pollutants, and discusses ways of measuring the contaminants emitted by the presence of man in a room.
Sponsored by the Ministry of Trade and Industry, a consulting firm performed an investigation of the possible energy savings in industrial halls outside working hours.
The use of sealants and gaskets are often recommended as an effective energy saving measure. However, the energy saved depends on the function of building and ventilation as a total system.
Considers the options which could be described as heat recovery and which are open to building services designers and operators.
Studies indoor air pollution (and its effect on health) arising from gas cooking.
Air curtains are used to protect entrances of big buildings such as department stores and cold-storage warehouses.
As insulation standards improve, heat loss by ventilation becomes a larger proportion of the total heat loss from a building. Ventilation control is therefore necessary to minimize heating energy consumption in houses.
Reports experiments on whether there is an optimum air speed for comfort carried out at the Electricity Council Research Centre at Capenhurst. 9 seated subjects were separately exposed to a steady horizontal air movement over the whole body.
Reviews nature of air flow conditions, meteorology affecting building air flow, wind effects on systems operation, and physical modelling and full- scale measurements.