Research Areas

Area 2: Fire Suppression Systems

  • Fire suppression systems were studied for over 20 years.
  • Three important aspects on sprinkler, namely thermal sensitivity of sprinkler heads, physical properties of water spray and interaction with fire, have been studied.
  • With those results, appropriate sprinkler system can be designed to achieve the most efficient extinguishing effect.
  • Performance of atrium sprinklers can be evaluated.
  • Experimental studies on properties of sprinkler water spray and the effect of sprinkler water temperature on the extinguishing mechanism of a fire.
  • Thermal response of sprinkler heads studied by a self-developed wind tunnel.
  • Another area is on the feasibility study of installing sprinkler system in old high-rise buildings, which was initiated after several big fires in Hong Kong. 
  • Sprinkler for new architectural features such as coverage of perimeter zone in an atrium is also studied. 
  • Effort was made on studying long-throw sprinkler installed at height.
  • New technology of water mist system was studied.  Adverse effects of steam production and combustion enhancement were investigated.
  • Bench-scale tests with a cone calorimeter and full-scale burning tests were carried out. 
  • Extinguishment chemistry on fire suppressants with advanced chemical measuring technique was studied. 
  • Video Detection System, and total flooding gas protection system with clean agent were also investigated in conjunction with partners at Harbin, Heilongjiang, China. 
  • The study on the effect of thermal radiation on extinguishing concentration of heptafluoropropane was studied. 
  • Joint research in suppression chemistry and fire retardants was carried out with the PolyU-ABCT and University of Southampton.  Three inter-faculty projects have been funded by PolyU since 2004.