Thermal Responses of Sprinkler Heads in Hot Air Stream with Speed Less Than 1 ms-1

[摘要] References(16)Cited-By(2)This paper reports the velocity dependent nature of the effective operating temperature of a liquid-in-glass type of sprinkler head. Experimental studies is carried out using a specially designed heated wind tunnel for studying thermal responses of sprinkler heads. The tunnel is similar to the one developed at the Fire Research Station, United Kingdom. With it, two tests: plunge and ramp test, are carried out to investigate the thermal responses of the sprinkler head. Especially, thermal responses at low air speed are investigated in details. About one hundred sprinkler heads are studied and results on different defined time indices are correlated with this fairly large sample size.

[学科分类] 环境科学（综合）

[关键词] Self-heatings;Potato chip;TG-DSC;Apparent activation energy;Thermal ignition