Applied air jet flow to prevent smoke hazards during evacuation

• Main Authors: Chih-chien Yen, 顏志謙
• Other Authors: Kee-Chiang Chung
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/33623181702376693568

碩士 === 國立雲林科技大學 === 機械工程系碩士班 === 99 === Recently, the horizontal air jet smoke control system for applying in evacuated regional or corridor has begun to study in Japan. The theory of horizontal air jet smoke control system is blowing air from the nozzles installed on both sides of the wall to prevent the smoke spread from fire sites. The system has the advantages for using in the hospitals, nursing homes, or underground tunnels places which have a large number of weaker evacuees that will cause trouble by fire door or smoke curtain and other smoke devices. The horizontal air jet smoke control system is different with the traditional design of the staircase pressurization smoke system. The traditional design is pressurized the staircase to prevent smoke from the fire room to a non-fire area and to prevent the concentration of smoke arise. The increase in pressure levels on the fire area is the conditions to achieve the function of smoke prevention. Due to the air dynamic pressure in the corridor, the blowing air on corresponding opening’s area will prevent the smoke from fire sites and to achieve high performance reliable smoke prevention function. It is an experimental-based research project and supplemented by computer simulation work. The experimental planning will study the supply air jet parameters’ ranges for preventing the smoke into the staircase or opening. This project may review the appropriate required air volume for some assumed fire sources. The computer simulation results will be compared case by case with the experimental results. The feasibility in the future of using of computer aided design tool for horizontal air jet smoke control system in corridor is examined. , The main research goal is to discover the appropriate air volume parameters and smoke prevention efficiency in the evacuation area or corridor.