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TO THE QUESTION OF CALCULATION OF TEMPERATURE OF THE PRODUCTS OF BURNING DELETED FROM CORRIDORS OF BUILDINGS

Journal: Pozharovzryvobezopastnost/Fire and Explosion Safety (Vol.25, No. 1)

Publication Date:

Authors : ;

Page : 47-53

Keywords : ;

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Abstract

An inspection of the assumption of incomplete participation in heat exchange of the protecting corridor designs at the fire with a research objective of influence of an arrangement of smoke valves in relation to doorways of placements of the seat of fire on temperature of the combustion gases deleted from a corridor, and definition of the worst scenario of the fire from the point of view of work of systems of exhaust smoke ventilation is carried out. The values of temperature received by the existing settlement techniques for the full length of a corridor, are significantly underestimated in relation to results of the numerical experiments received in article that can cause a choice of the fan of system of smoke control system with an insufficient productivity. Results of calculations allowed to reveal the worst scenario of the fire from the point of view of work of systems of exhaust smoke ventilation from corridors; that is the option, when temperature of the products of burning deleted from a corridor maximum, i. e. when the smoke (fire-prevention) valve is at the minimum distance from a room door with the seat of fire. It is noted that for carrying out practical calculations it is necessary to consider the minimum distance from a doorway of the room of the seat of fire (the room where fire emergence) to the smoke valve (fire-prevention) of system of exhaust smoke ventilation.

Last modified: 2018-10-18 16:58:15