Toxic Gas And Particulates Characterization In A Smoke Density Chamber

Download or read book Toxic Gas and Particulates Characterization in a Smoke Density Chamber written by Yumi Matsuyama and published by . This book was released on 2019 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smoke and toxic gas inhalation is a major cause of civilian and firefighter deaths during a fire incident. Real-time measurements of the concentrations of particulates and toxic gases in a smoke density chamber have been made using a tapered element oscillating microbalance (TEOM) dust monitor, a Fourier transform infrared (FTIR) gas analyzer, and a hand-held particulate/gas sensor prototype (O2, CO, and hydrocarbons) under development. The FTIR analyzes a total of 21 toxic gases, including both asphyxiants (CO, HCN, etc.) and irritants (HCl, HBr, acrolein, formaldehyde, etc.). Common building materials, plastics, and selected woods at various moisture contents are used as the fuel. A specimen is placed vertically or horizontally and heated with an incident radiant flux of 25 kW/m2 under a flaming or non-flaming condition. The smoke obscurity and the particulate mass concentration correlate well with live readings of the CO concentration. The prototype device for fire service is being validated by the standard analytical equipment (TEOM and FTIR).