Hot gas fire extinguishing principle
Acrylic Custom Tray,Custom Shower Niche,Laundry Sink And Cabinet,Acrylic Bathroom Products SALLY TECHNOLOGY CO.,LTD , https://www.sallyshowers.com
(1) Endothermic cooling and extinguishing: The solid particulate metal oxides in aerosols undergo decomposition reactions at high temperatures in the combustion zone, absorbing a large amount of heat, rapidly reducing the temperature at the site, causing the combustion process to be interrupted and the flames to extinguish.
(2) Gas phase chemical suppression: The metal species dissociated from aerosol particles exist in the form of vapors or cations and undergo chain reaction with active groups H, OH, and O in the combustion products, and consume a large number of reactive groups to achieve Inhibition blocks combustion.
(3) Solid-phase chemical suppression: Particles of solid particles that are not decomposed and gasified in aerosols have small diameters (about 1 μm), but they have a large surface area and collide with the active groups in the combustion products and are adsorbed and chemically generated. The reaction consumes reactive groups and inhibits combustion.
(4) Inerting: The aerosol contains a relatively high concentration of inert gases such as N2, CO2, and dilute the oxygen content to suppress combustion.
(VII) Performance comparison between Jianhao (JHS) fire extinguishing device and related fire extinguishing products Jianlou JHS extinguishing agent and other gas fire extinguishing agents performance comparison table:
Name 1301(Halon) CO2 IG541(Yanuojin) FM200(Heptafluoropropane) JHS(Aerosol)
Types of
Ozone destructive (ODP value) 1.6 0 0 0 0
Greenhouse effect (GWP value) 5800 100 0 0 2050 0
Toxicity NOAEL (%) 5 1/5 of the fire extinguishing concentration feels difficulty in breathing 43 9 1x fire extinguishing concentration without adverse reaction
 LOAEL (%) 7.5 1/2 person killed in fire extinguishing concentration 52 10.5
Fire Extinguishing Efficiency (Fire Extinguishing Speed) Fastest Slowest Slow Fast Fastest Design Fire Extinguishing (g/m3) 330 1,000 920 220 220
Storage pressure (MPa)2.5/4.2 5.17 15 2.5/4.2 Atmospheric pressure (MPa) 2.5/4.2 5.17 15 2.5/4.2 ?0.5
Startup method N2 N2 N2 N2 Electronic Trigger Device Area Ratio (%) 200 800 1000 300 60
The system consists of a pipe network, a pipe network, a pipe network, a pipe network, and a pipe network. The installation, use, and maintenance of the performance of the pipe network system (1) have a large amount of installation work; (2) high storage requirements, high risk, and easy leakage (3) Large maintenance workload; (4) High cost and high maintenance costs.