Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Passive smoke evacuation systems - with reference to Vietnamese multi-storey buildings
The use of indoor combustion devices without proper smoke evacuation is a severe problem in Vietnam, as in many other developing countries. This study is focusing on a solution with a passive design of the smoke evacuation system. In order to form a knowledge basis a field survey concerning kitchen environments was carried out in Hanoi with surroundings. The only way to discharge the smoke to the outside of the house, in a passive way, is to use the natural buoyancy of the hot gases produced during the combustion. It is difficult to reach efficiency in this mechanism - the chimney draught - when using an open fire and in a climate where there is no difference between the indoor and the outdoor temperature. Experiments were performed in Hanoi, in order to see in what way different parameters influenced the draught. An experimental chimney hood was constructed and a number of measurement series were performed and during those the CO-concentration, the particle concentration, and the temperature in the flue pipe were measured. The experiments showed large differences between identical series, which makes it difficult to estimate the influence of the draught. Our conclusion is that it is necessary to use a small smoke gas fan in the flue pipe, in combination with sheltering walls around the fire, if an essential improvement of the indoor environment should be reached.
Passive smoke evacuation systems - with reference to Vietnamese multi-storey buildings
The use of indoor combustion devices without proper smoke evacuation is a severe problem in Vietnam, as in many other developing countries. This study is focusing on a solution with a passive design of the smoke evacuation system. In order to form a knowledge basis a field survey concerning kitchen environments was carried out in Hanoi with surroundings. The only way to discharge the smoke to the outside of the house, in a passive way, is to use the natural buoyancy of the hot gases produced during the combustion. It is difficult to reach efficiency in this mechanism - the chimney draught - when using an open fire and in a climate where there is no difference between the indoor and the outdoor temperature. Experiments were performed in Hanoi, in order to see in what way different parameters influenced the draught. An experimental chimney hood was constructed and a number of measurement series were performed and during those the CO-concentration, the particle concentration, and the temperature in the flue pipe were measured. The experiments showed large differences between identical series, which makes it difficult to estimate the influence of the draught. Our conclusion is that it is necessary to use a small smoke gas fan in the flue pipe, in combination with sheltering walls around the fire, if an essential improvement of the indoor environment should be reached.
Passive smoke evacuation systems - with reference to Vietnamese multi-storey buildings
I. Gustavsson (Autor:in) / A. Johansson (Autor:in)
1993
97 pages
Report
Keine Angabe
Englisch
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