Abstract
The current fire suppressant concentration analyzer using the differential pressure method is limited to atmospheric pressure characterization, and its low-pressure characteristics remain unknown. This study investigated the impact of pressure on the differential pressure model theoretically and experimentally. The theoretical model was refined by flow control and viscous effects using flow and laminar correction elements. Results indicated a linear relationship between mass flow rate and pressure, while volume flow rate remains unaffected by pressure. Pressure primarily impacted differential pressure by affecting the viscous correction coefficient. The concentration measurements of Halon 1301 and HFC-125 were conducted using an adjustable low-pressure simulation system. The measured differential pressures were corrected using the Slope/Bias method. The absolute error of concentration measurements for both suppressants in the range of 0%-30% was less than 0.2% after correction. This study provides valuable theoretical guidance to improve the performance of airborne fire suppressant concentration analyzers.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
