Electrical analogy in heat and smoke evacuation
Authors
Citation
International journal on architectural science, v.2, no.1, 2001, pp. 1-6
Abstract
In order to determine the characteristic properties of smoke, we used a new transient method calculating the temporal evolution of the smoke properties. It is called the electrical analogy, which is the easiest in practical problems.
We represent the tension difference with the pressure difference and the current with the square of the mass flow of air (or smoke), traversing the system.
With this method we can also subdivide the hot layer in two under-layers, in order to avoid the fact that the whole smoke layer has the same properties, and to have a more realistic mean of these properties rather than the classical two zones method.
We investigated the influence of the ceiling vent and the height of the space, and we showed that the determination of the free layer height and the temperature are enhanced with the two smoke layer method, while the other characteristics are sufficiently represented by the one smoke layer method.
(1) Introduction
(2) Procedure
(3) Effect of the ceiling vent area
(4) Effect of the space height
(5) Concluding remarks
(6) Nomenclature
(7) References
Description
Notes: Ventilation
Subject
Type
Article
Format
Date
2001
Language
en