LoginDescribes a case of primary and secondary infections of TB in an office environment in Tokyo, Japan. It was found that the ventilation system was frequently closed down to save energy, resulting in high CO2 concentrations.
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.
Moisture enters an attic both from the house and from the ventilation air. It has been assumed that when the roof sheathing temperature cools below the attic air dew point, condensation occurs on the roof sheathing.
Infiltration models are used to simulate the rates of incoming and outgoing air flows for a building with known leakage under given weather and shielding conditions.
Simulation of the thermal performance of a building to take account of uncontrolled infiltration shows that infiltrating air on a leakage path is efficiently warmed up, especially if infiltration flow rates are low.
This paper discusses the measurement of air infiltration rates and reports on measurements relating indoor and outdoor aerosol size distributions in the 0.01 to 1 micron size range.
The determination of an acceptable range of humidity is complicated by the conflicting effects of an increase or decrease in humidity levels on the speed of chemical interactions and growth of biological organisms and pathogens that may affect hum
Current moisture analysis methods for walls ignore air leakage effects or are not directly applicable to multilayered walls.
A steady state multi-cell calculation model has been developed in order to predict the interconnection between airtightness and ventilation rates. The model has been tested with measured leakage data of a detached house.
Natural ventilation has a specific significance in creating a tolerable environment in manufacturing plants with high technological heat loads.
Describes construction of timber-frame housing to high level of airtightness. A target level of 0.4 ach at 50 Pa was set.
Reviews the existing standards of the AIC participating countries for whole buildings, windows, doors and building sections.
This is the third item in a series on methods for predicting condensation risks within structures.
Reduction in air leakage rates due to weatherization of homes can be determined by fan pressurization and tracer gas techniques, but only the latter gives the results under normal occupancy conditions.
Errors resulting from treating a house as an enclosure surrounding a single, well-mixed volume of air are explored in detail for a ranch house with abasement.
This report presents the results of air leakage tests on polyethylene membranes installed in a frame wall. The results would be useful in evaluating the methods commonly used for installing such a component.
Over a one-year period, measurements were taken of air temperature, air humidity, ventilation rate, concentration of organic gases and vapours, formaldehyde and odour intensity in a small unfurnished bedroom in each of 6 new unoccupied low energy
The installation of much tighter windows has led to reduced rates of natural ventilation in German dwellings.