LoginThis paper describes an experimental investigation into the operation of a modified Trombe wall.
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
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.
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.
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 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.
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.
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.
Maximum velocity of return flow close to the floor in a ventilated room - experimental and numerical results. | 1996 | English
The problem of sensation of draught in ventilated spaces is connected to inappropriate velocities in the occupied zone. In Scandinavia, velocities higher than 0.15 m/s are said to be an indicator of that occupants are likely to feel discomfort.
A study of the reliability of systems by considering the ability of different systems to maintain a required air flow rate over time is included in a subtask of IEA Annex 27 "Evaluation and Demonstration of Domestic Ventilation Systems".
Natural ventilation studies were carried out within the frame of PASCOOL EC Research Project.
This paper reports on the use of BRE's domestic ventilation model, BREVENT, to predict subfloor and whole house ventilation rates in a BRE/DoE test house.
Since 1985 more than 170 very low energy houses, all of the same type and structure, were built in the Flemish Region, Belgium.
Practical experiences with IR controlled supply terminals in dwellings and offices. | 1996 | English
Ventilation is necessary to provide a good indoor air quality to occupants in office buildings but is however a major energy consumer.
Although the power law has been broadly accepted in measurement and air infiltration standards, and in many air infiltration calculation methods, the assumption that the power law is true over the range of pressures that a building envelope experi
Water use is distributed throughout building structures.
Zonal model to predict air distribution and dynamic concentration of pollutant in ventilated rooms. | 1996 | English
The first part of the paper will show some aspects of experimental research on air distribution in ventilated rooms.
This paper reports on work carried out at BRE to address the need for guidance on designing for natural ventilation via single-sided and cross-ventilation in office spaces and the limits of application in terms of plan depth.
A Probabilistic model of air change rate in a single family house based on full-scale measurements has been developed.
A control system that prevents air from entering an air-handling unit through the exhaust air. | 1996 | English
Traditional air-handling unit (AHU) control systems link the position of the exhaust air damper, recirculation air damper, and outdoor air damper.
The use of local exhaust is considered to be the most effective way to control pollutant dispersion from intense sources, such as in kitchens, in toilets, as well as in copy machine rooms.