LoginMeasurements of spoiler aerodynamic noise, generated in a low velocity flow duct and radiated from an open exhaust termination, have been made in the form of sound power spectra.
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.
Access to the publications is free of charge.
Describes use of an acoustic method developed by Keast to detect air leaks.
Notes that some of the main contributors to excessive ventilation in industrial buildings are external doors and loading bays. Discusses the choice of industrial doors to minimise energy loss.
Describes the operating characteristics of a small aspirated concentration sensor based on a hot-film anemometer.
Reports tests on 4 different windows of air leakage and sound transmission loss. Expresses each of these two quantities by a single parameter and finds reasonable correlation between the parameters.
Discusses use of an instrumented energy audit, as opposed to a walk-through audit. Describes use of the audit to pinpoint infiltration sites. Method used is to depressurize a building and use thermography to locate air leaks.
Reviews the topic of indoor air quality as it relates to energy efficient homes. Discusses air pollution from combustion, airborne particles, formaldehyde and radon.
Reports measurements of air leakage in several supermarkets and an enclosed shopping mall, all constructed between 1954 and 1979. All tests were conducted by using a large fan to depressurize the building. Gives graphs of leakage rates.
Notes one of the principal ways in which members of the public receive natural irradiation is by breathing the decay products of radon 222. Reviews data on radiation exposure and the incidence of cancer for uranium miners.
Calculations show that natural ventilation exploiting wind and specific gravity differences may reduce the need for ventilation heat.
Describes some of the problems encountered when the full-scale wind pressure measuring system was set up in an experimental building at the University of Hong Kong.
Gives a general description of air-to-air heat exchangers. Discusses criteria for measuring the performance of heat exchangers. Briefly discusses factors affecting actual performance.
Describes a method, derived from bibliographical research, for air infiltration calculation in a multistorey building.
Elucidates many different aspects of formaldehyde occurrence, such as, comparable indoor air pollutants, complaints and investigations, coherence with ventilation rate and construction, chipboard types, qualities and prices, differing European dir
Describes methods used at ECRC for measuring the ventilation rate in houses. Two tracer gas methods are used, the decay method and the constant concentration method.
Presents results of measurements of ventilation rates in the SEGAS test house. Describes the house and its heating and mechanical ventilation systems. Measurements of ventilation rates were made using helium as a tracer gas.
Reports results of measurements of radon gas made in each of the Saskatoon low energy houses in December 1980.
Describes a covariance integration method for the determination of fluctuating overall structural loads due to wind and their effects on low rise buildings.
A short note giving formulae for the design of spires for use in simulating the planetary boundary layer.
A fair comparison of ventilation systems is almost an impossible achievement. Even an economic comparison causes difficulties; the different systems render different room air qualities which cannot be counted in money.