LoginThe book of proceedings from the 17th AIVC Conference "Optimum Ventilation and Air Flow Control in Buildings", Gothenburg, Sweden, 17-20 September 1996
Volume 1 includes 40 papers
Volume 2 includes 28 papers
17th AIVC Conference - Gothenburg, Sweden - 17-20 September 1996
The 17th AIVC Conference - Optimum Ventilation and Air Flow Control in Buildings, was held in Gothenburg, Sweden, 17-20 September 1996.
Contains 62 papers.
Volume content
17th AIVC Conference "Optimum Ventilation and Air Flow Control in Buildings" (Book of Proceedings) | 1996 | English | 510 pp
The use of computers for simulating building thermal behavior started early at the Royal Institute of Technology in Stockholm, Sweden. The first example of such use dates from a 1957 study of an exterior wall exposed to solar radiation.
This paper reports on the ventilation measurements in a cinema using the tracer-gas technique. Both the local and room air exchange efficiencies were measured.
A tool for evaluating domestic ventilation systems' ability to provide an acceptable indoor air quality. | 1996 | English
This paper is describing the first results of the Annex 27 work aiming at developing simplified tools for evaluating domestic ventilation systems by using sophisticated simulation programs studying pollutant concentration either for each person or
Train tunnels and subways are an interesting field of ventilation. Trains move air through tunnels at rates of 600 m³/s (over 2 x 10^6 m³ per hour) which is much more than flow rates in buildings.
The suitability of night ventilation for cooling for the UK is first assessed by presenting plots of summer weather data on the bioclimatic chart for three locations within the country.
The influence of outdoor air vents and airtightness on natural ventilation - calculations based on measurements. | 1996 | English
Many modern buildings in the Nordic countries have mechanical ventilation. Passive stack ventilation is, however, an accepted ventilation system in the Nordic countries according to the current building codes.
The evolution of ventilation in manufactured housing in the Northwestern United States. | 1996 | English
Electric utilities in the Pacific Northwest have spent over $100 million to support energy efficiency improvements in the HUD-code manufactured housing industry in the Pacific Northwest over the past several years.
The common way to determine air infiltration, exfiltration and interzonal flows from tracer gas measurements in multizoned buildings is to rely upon the standard single or multizone model, Vc(t) = Qc(t)+p(t) .
System safety of the performance of mechanical ventilation systems can of course be analysed by means of general methods for system safety analysis. Such methods are used a lot in industrial practice, especially in manufacturing industry.
Wind pressures can significantly affect ventilation performance. However often they are overlooked in the design of a naturally ventilated building, with buoyancy forces presumed to offer the worst case scenario for design.
Modelling and assessing ventilation efficiency in an imperfectly mixed ventilated air space. | 1996 | English
To ensure indoor air quality an efficient ventilation system should provide fresh air in those parts of a room where it is required.
This paper describes an experimental investigation into the operation of a modified Trombe wall.
Application of the tracer gas techniques for the assessment of ventilation indexes in real buildings. | 1996 | English
The work presented in this paper is aimed at the definition of tracer gas experimental procedures for measuring the air change rate, the age of air and the air change efficiency in real buildings under mechanical ventilation conditions.
Especially in modern buildings with small capacity of humidity storage it is necessary to reduce the humidity in the supply air. Normally this was done by using a refrigeration system mostly with CFC's.
Ad Hoc Group 4 of Working Group 2 of CEN TC156 (Ventilation) was set up to put forward standardised techniques for estimating ventilation rates in dwellings.
The work described in this paper is aimed at predicting the local values of the ventilation eflectiveness parameters of large industrial buildings by a technique which involves the use of computational fluid dynamics and multizonal modelling.
Application of a passive tracer gas technique in naturally and mechanically ventilated school buildings. | 1996 | English
The homogeneous emission passive tracer gas technique is described. This technique relies on an even distribution of constant tracer gas emission rate within the object to be measured, so that the emission rate per volume unit is constant.
The project described in this paper has performed simulations using a multi-zone air flow model (4(COMIS)) of three different passive stack ventilation systems.
Ventilation performance evaluation using passively-generated carbon dioxide as a tracer gas. | 1996 | English
Tracer gases are commonly used to evaluate the performance of ventilation systems. One way to reduce the time, complexity, and cost of such experiments is to use the carbon dioxide generated by occupants as a tracer gas.