Simulation test research on failure condition of automatic sprinkler system
Through experimental methods,obtain the actual per-formance of automatic sprinkler fire extinguishing systems under three simulated failure conditions,analyze and compare the ex-pected fire extinguishing effectiveness under the system design conditions,and summarize the impact of different failure condi-tions on fire extinguishing effectiveness.The experimental results show:the sprinkler deflector failure will cause uneven water distri-bution and less effective control of early stage fire,so that the number of actuated sprinklers will increase to meet the fire control requirements,and the failure can result in about 40%reduction in fire extinguishing efficiency.The malfunction of the thermal sensi-tive element will lead to higher sprinkler operation temperature and longer response time,during which the fire develops too rap-idly to be effectively controlled in the short term after the sprin-kler actuation,and the malfunction can result in about 25%reduc-tion in fire extinguishing efficiency.Furthermore insufficient work-ing pressure will cause the most serious impact,which reduces the fire extinguishing efficiency by about 60%.