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
Inter-zone convection affects the general movements of air in a building and must be evaluated for accurate thermal zones heat and mass balance. The paper…
The computer programs published so far have enabled the calculation of airflows at constant temperatures or of air temperatures at constant airflows. The…
This paper is concerned with the application of air flow simulation in design. It describes the real world application - and the results of this with…
The flow rate in thermal plumes are influenced by many factors. Influence by enclosing walls is one of them. This article presents simple symmetry…
The evaluation of a code can be done by investigating two items: solving the correct equations and solving equations correctly and eficiently. An indoor…
Both infiltration and exfiltration has a predominant influence on the space heating requirements in cold climates. Good predictive design methods are…
The concentrations of indoor pollutants should be maintained below recommended values at all occupied locations at any time. A design method based on…
The basis of this study are experimental results obtained on a real scale cell in controlled climatic conditions which are used to show the potential…
A mathematical model has been developed which will facilitate the prediction of infiltration rates within multi-zone buildings. The aim was to cater for: (i…
A set of diagrams for estimating flow coefficients and exponents in the power law flow equation for cracks are presented. The diagrams are primarily…
The methods available for the measurement of air infiltration and air movement in large industrial halls are restricted by the size of the building and the…
Tracergases provide a way to determine airflows in different situations. In some cases it is the only way to get quantitative information. This paper…
The measurements reported in this paper were carried out in a mock up of an office room, ventilated by a commercial supply air terminal consisting of 84…
The study recommends adoption of the new higher ventilation rates, but with the use of alternative occupancy densities. To verify compliance with Standard…
Field investigations were undertaken on five houses to determine the potential for improved performance and lower costs through the use of a demand…
This article discusses the application of tracer gas methods to industrial hygiene investigations. It introduces the basic concepts necessary to understand…
This paper reports the design, development, calibration and testing of a fast-response, multi-channel tracer gas concentration measuring instrument. The…
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…