Abstract
Death toll by smoke in fire is estimated at 70% which emphasizes the importance of smoke control system to deal with the fire smoke. In advanced countries, the studies on method to prevent smoke spread by forming the air curtain using high velocity jet flow are underway now. In this study, a linear-jet type air curtain system is proposed to prevent the smoke spread and analysis of flow characteristics of pressure chamber, which is the core component, is conducted through numerical analysis and experimental approach. Consequently, the pressure was increased in 2D functional way to input air flowrate and about 595 Pa pressure was formed at pressure chamber inlet in response to 30 m/s nozzle jet velocity.
Highlights
In line with increasing high-rise and large buildings in urban area, increasingly growing number of buildings become vulnerable to the fire and it’s necessary to develop the measure to effectively secure the safety of the people in fire for application to the site
As one of the system to prevent smoke spread in building, a linear-jet type air curtain system is under development and this paper is intended to introduce the research result to obtain the basic data for designing the pressure chamber which is the core component of a linear-jet type air curtain system
A basic model of pressure chamber which is the core component of linear-jet type air curtain system is proposed and analysis of flow characteristics of pressure chamber depending on air flowrate was conducted through numerical analysis and experiment of basic model and conclusion is made as follows
Summary
In line with increasing high-rise and large buildings in urban area, increasingly growing number of buildings become vulnerable to the fire and it’s necessary to develop the measure to effectively secure the safety of the people in fire for application to the site. The studies on method to prevent smoke spread by forming the air curtain using high velocity jet flow are underway in advanced countries. As one of the system to prevent smoke spread in building, a linear-jet type air curtain system is under development and this paper is intended to introduce the research result to obtain the basic data for designing the pressure chamber which is the core component of a linear-jet type air curtain system. Pressure formed at pressure chamber with related to air flowrate was obtained, and fan and pressure chamber of linear-jet type air curtain system could be designed based on such analysis result
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