LoginThe calibration and use of a shielded dual sensor hot-wire probe, originally developed at McGill University for velocity measurement in highly turbulent and reversing flows, is described.
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.
The AIVC website includes a protected content feature that provides access to AIRBASE. Access to the protected content is free of charge but requires you to register first.
This paper presents a numerical calculation method for a two-dimensional, isothermal, turbulent room air movement. In this case, the time averaged stream function-vorticity equations were represented by finite differencing approximations
Presents documentative report of findings of research into effect of weather on internal environment in buildings. Presents results to promote their further application.
Gives state-of-the-art review of ventilation needed to control carbon dioxide, odours, cigarette smoke and moisture mentioning main results. Gives sketch graphs illustrating these results.
States that porosity is the most important single parameter describing shelterbelts but is very difficult to measure or define.
Reports a study of patterns of domestic energy consumption in the U.S.A. Surveys home energy use and energy use for travel. Recommends ways of saving energy. Discusses sources and distribution of air pollution.
Reports laboratory tests of sound transmission loss, thermal transmittance and rate of air leakage conducted on full-scale specimens of typical residential exterior wall constructions, either unbroken or penetrated by a door or window.
Describes computer program used for calculating heating and cooling loads on buildings. Discusses current state of heating and cooling load techniques and various unique features of NBSLD.
General principles of air movement around buildings are stated, indicating where windy areas are likely to occur. Case studies are then described in detail, and lessons to be learnt from these are summarised.
A survey of current methods of calculating natural ventilation and infiltration rates showed that most design recommendations are based on the results of digital analogue studies.
Describes methods of calculating ventilation heat losses employed in several European countries. Compares them from standpoint of air change rates. Proposes calculation procedure for new Czechoslovak standard CSN 06 0210.
Detailed analysis of actual space heating requirements shows a much higher consumption in mild weather than predicted. Attributes this mainly to casual window opening, which accounts for 30% of total energy used.
Reports results of series of tests on 6 single-family houses to determine rates of overall leakage through windows, doors, walls and ceilings.
Reports measurements in title. House was contained in environmental chamber with control over inside and outside temperature with essentially no wind velocity.
Describes pressurization method of measuring air leakage using a fan installed through an open window. Gives results of survey of 24 houses.
Reports study of air infiltration through experimental windows installed in a normal office building. Air change rate was measured using carbon dioxide as a tracer gas. Pressure drop across window, wind velocity and direction were recorded .
Suggests energy usage can be reduced by lowering the quantity of ventilation air. Reviews ASHRAE standards for minimum ventilation and air quality. Suggests changes in air conditioning design and the use of air purification equipment.