smoke extraction
Name: Leung Chun Wai
Student no.: G20554292
Topic: (NT3048) Smoke extraction design for large space such as atrium
1. INTRODUCTION
Atrium inside a building is an old architectural concept for about two thousand years. This concept has been developed and extended to modern buildings. Current trend of atrium design provides an ‘ideal’ external environment to the occupants with a large undivided space. The major problem for fires in atrium is hot and toxic gases accumulating and go down in the atrium, spreading throughout the atrium, and affecting escape routes, even there is no fire. Generally, atrium design is classified into three types which are cubic, flat and high [1, 2]. Cubic and flat atria have been widely applied in U.K. and Europe. For tall atria, it can be commonly found in Hong Kong and U.S.A.. The objective of this paper is to evaluate the performance of smoke exhaust system inside a tall atrium and develop such a ‘fire engineering’ approach, which can underpin a simple guide for engineers in the smoke management for tall atrium.
This Report is intended to assist designers of smoke ventilation systems in enclosed shopping complexes. Most of the methods advocated are the outcome of research into smoke control by smoke ventilation at the Fire Research Station, but also take into account the recommendations1 of the Working Party on fire precautions in town centre redevelopment, as well as experience gained and ideas developed whilst the authors and their colleagues have discussed many proposed schemes with interested parties. The primary purpose of this Report is to summarise the design advice available from the Fire Research Station at the time of its preparation, in a readily usable form. As such, the Report is neither a detailed engineering manual nor is it a scientific review article. Perhaps most important of all, it is not a summary of the totality of approaches possible. New methods such as those based upon computational fluid dynamics, will
Student no.: G20554292
Topic: (NT3048) Smoke extraction design for large space such as atrium
1. INTRODUCTION
Atrium inside a building is an old architectural concept for about two thousand years. This concept has been developed and extended to modern buildings. Current trend of atrium design provides an ‘ideal’ external environment to the occupants with a large undivided space. The major problem for fires in atrium is hot and toxic gases accumulating and go down in the atrium, spreading throughout the atrium, and affecting escape routes, even there is no fire. Generally, atrium design is classified into three types which are cubic, flat and high [1, 2]. Cubic and flat atria have been widely applied in U.K. and Europe. For tall atria, it can be commonly found in Hong Kong and U.S.A.. The objective of this paper is to evaluate the performance of smoke exhaust system inside a tall atrium and develop such a ‘fire engineering’ approach, which can underpin a simple guide for engineers in the smoke management for tall atrium.
This Report is intended to assist designers of smoke ventilation systems in enclosed shopping complexes. Most of the methods advocated are the outcome of research into smoke control by smoke ventilation at the Fire Research Station, but also take into account the recommendations1 of the Working Party on fire precautions in town centre redevelopment, as well as experience gained and ideas developed whilst the authors and their colleagues have discussed many proposed schemes with interested parties. The primary purpose of this Report is to summarise the design advice available from the Fire Research Station at the time of its preparation, in a readily usable form. As such, the Report is neither a detailed engineering manual nor is it a scientific review article. Perhaps most important of all, it is not a summary of the totality of approaches possible. New methods such as those based upon computational fluid dynamics, will