Study on fire extinguishing performance of superfine powder fire extinguishing agent in a cup burner
- 10.2991/peee-15.2015.55How to use a DOI?
- Superfine powder fire extinguishing agent, Extinguishing concentration, Aerosol, Cup-burner.
A modified cup-burner apparatus with a vibrating-spiral micro feeder was developed for testing the extinguishing performance of superfine powder fire extinguishing agent (SPEA). The suspension velocity of SPEA particles was calculated using the suspension-grade-model (SGD). The formation mechanism of SPEA-based aerosols was investigated theoretically, and the minimum air velocity for the SPEA particles was about 0.05m/s. Experiments were conducted on both ethanol and heptane fuels burning flames using NH4H2PO4-based SPEA with air flow rate of 60 L/min. The results show that the minimum extinguishing concentrations (MEC) of NH4H2PO4-based SPEA for ethanol and heptane fuel are 79.8g/m3 and 98.8g/m3, respectively. It is demonstrated that the NH4H2PO4-based SPEA is a highly efficient fire-extinguishing agent, which is an average of 2~3 times more effective than CF3Br, and an average of 5~8 times more effective than HFC-227ea.. This research is helpful for the engineering design of superfine powder fire extinguishing equipment, as well as has vital significance to the fire protection.
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - T. Chen AU - X.C. Fu AU - J.J. Xia AU - L.S. Jing AU - C. Hu PY - 2015/04 DA - 2015/04 TI - Study on fire extinguishing performance of superfine powder fire extinguishing agent in a cup burner BT - Proceedings of the 2015 International Conference on Power Electronics and Energy Engineering PB - Atlantis Press SP - 206 EP - 210 SN - 2352-5401 UR - https://doi.org/10.2991/peee-15.2015.55 DO - 10.2991/peee-15.2015.55 ID - Chen2015/04 ER -