LoginA new method for measuring interzonal air movement, using up to four different tracer gases simultaneously, has been developed at the Polytechnic of Central London and tested in a solar air-heated experimental house in Peterborough, UK.
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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There are three general categories of techniques for the control of radon and radon progeny concentrations in indoor air - restriction of radon entry, reduction of indoor radon concentrations by ventilation or air cleaning, and removal of airborne
The effects of retrofitting for building tightness, air-to-air heat exchangers, and HVAC circulation fans on radon and radon progeny levels were investigated using two matched test houses.
In the past several years measurements of radon and its daughters made in residential buildings in the USA indicate that in some situations the potential health hazard to the occupants of buildings from inhalation exposure can be significant.
Two techniques for estimating natural wind airflow through buildings for comfort cooling utilizing data derived from boundary layer wind tunnel studies are presented. One method is based on pressure and discharge coefficients.
Reliable surface pressure and indoor wind speed data from model buildings in boundary layer wind tunnels can only be expected if appropriate modeling parameters are considered carefully.
The steady-state heat loss of a house can be expressed as the sum of the above-grade conduction loss, the below-grade conduction loss, and the infiltration loss, minus the solar gain.
AC pressurization: a technique for measuring leakage area in residential buildings. | 1985 | English
This report presents a new technique for measuring the leakage area of residential buildings.
The fan pressurization method has been widely used by groups working with building retrofits and with new construction to evaluate the air tightness of building envelopes.
A series of laboratory tests for moisture problems were conducted on an air infiltration barrier. One series involved the condition where warm and moist indoor air circulates through wall cavities.
A study has been made, both experimentally and analytically, of the characteristics of thermal performance of high-rise buildings using an idealized model building with a number of openings at various locations and temperature distributions.
Wind tunnel tests were carried out using models of fallout shelters to determine correlations between shelter ventilation rate, area and distribution of wall openings, and wind speed and its direction relative to the orientation of the shelter.
Mechanical ventilation systems in large office buildings are designed to meet space conditioning loads and to maintain acceptable indoor air quality.
The effects of different ventilation practices on levels of carbon monoxide and nitrogen dioxide from an unvented gas range were studied under controlled conditions at an experimental house near Washington, DC, USA.
This paper describes a framework and methodology for developing and evaluating surveys of occupants for indoor air quality studies. Factors to be studied, and how they can be classified, are addressed.
A representative sample of over 2,000 UK dwellings was monitored for a year using thermoluminescent and etchable plastic dosemeters to measure gamma ray dose rates and radon concentrations.
Discusses the future prospects of domestic ventilation and whether mechanical ventilation will be necessary to satisfy requirements as windows become more airtight.
Large, multicelled and naturally ventilated buildings pose many inherent problems for the measurement of overall infiltration rates using tracer gases.
The development and construction of portable test equipment to determine air leakage has made it possible to carry out measurements on a large number of dwellings built using different construction technologies.
This report analyses the data obtained from 134 windows tested for the British manufacturing industry since the inception of new test methods in 1983.