The 12th AIVC Conference - Air movement and ventilation control within buildings, was held in Ottawa, Canada, 24-27 September 1991.
Contains 88 papers.
Volume content
Zonal models are a promising way to predict air movement, in a room with respect to comfort conditions and gradient of temperature, because they require…
This paper describes the application of numerical models to predict the ventilation rate and internal air movement patterns for a naturally ventilated…
The performance of a system for demand-controlled ventilation was investigated for a period of 1.5 years. Presence sensors of the passive infrared type are…
This report describes tracer gas measurements of the local mean age of air at different locations within an office room. These results are used to assess…
The present work is an investigation of ground heat exchangers for the air-conditioning of the supply air to residential buildings. To this end, an…
Mechanical devices such as exhaust fans and air handlers interact strongly with natural infiltration. In the past, the effects of mechanical systems have…
In Halmstad a multi-apartment house has been built with air carried heating. Fresh air was used as the only heat carrier. To improve the air quality it was…
A "HESCO"-type diffuser was selected as an example for the validation exercise in the IEA Annex 20 project (Air flow pattern within buildings). It consists…
A new algorithm for the continuous measurement of variable air change rates with tracer gases will be presented. It differs from the constant concentration…
Simplified, physical models for calculating infiltration in a single zone, usually calculate the air flows from the natural driving forces separately and…
Modern one-family houses in Scandinavia are often ventilated by an exhaust fan. Most of the outdoor air probably enters through whatever cracks and openings…
A new handbook, describing in details the measurement techniques which could be used to better understand the infiltration and ventilation in buildings is…
The knowledge of IEA-Annex 14 'Condensation and Energy' has been applied to develop a new strategy for humidity control in dwellings. The presented control…
Air infiltration and ventilation has a profound influence on both the internal environment and on the energy needs of buildings. In most electrically heated…
A test room with a Displacement Ventilation System was built. Temperature control was provided with a DDC (Direct Digital Control) System, controlling the…
Airflow rates are directly affected by the amount of open area and consequently by the inhabitant behavior with respect to window opening. In this paper, a…
This paper illustrates the principles of demand controlled ventilation systems (DCV) as applied to office buildings. Appropriate ventilation approaches and…
A laboratory investigation has been made in a modern Swedish bathroom continuously ventilated by an exhaust fan. The tests consisted of measurements of the…
Conventionally used thermal anemometers are able to measure velocity, but cannot determine direction. In the present study, a new kind of thermal anemometer…
Kitchen hoods are frequently found in Belgian kitchens. Most of them have as only function intensive ventilation during certain cooking activities. It is…