To Enhance the Fire Resistance Performance of High-Speed Steel Roller Door with Water Film System

Table 1

Heating test record of high-speed roller door with water film on unexposed surface.

Exposed surface: water film on the unexposed surface
Date of test: February 13, 2014	Indoor temperature: 20°C; Indoor humidity: 61%
Heating test duration (h:m:s)	Test observations
0:00:−30	Switch on water circulation system 30 seconds before heating
0:00:00	Heating begins (roller door upwarp of roller door bottom bed plate is 0 cm)
0:27:00	Supplement tap water
0:27:58	Water circulation system pumping failure
0:49:00	Water supply system drops out, repaired instantly
1:00:00	Roller door upwarp is 0 cm
1:48:40	Temperature measured by handheld thermocouple at unexposed surface measuring point TC#_8 is 67°C
1:50:10	Temperature measured by handheld thermocouple at unexposed surface measuring point TC#_3 is 97°C
1:51:30	Temperature measured by handheld thermocouple at unexposed surface measuring point TC#_9 is 99°C
1:53:10	Temperature measured by handheld thermocouple at unexposed surface measuring point TC#_5 is 110.7°C
1:55:00	Temperature measured by handheld thermocouple at unexposed surface measuring point TC#_6 is 84.1°C
2:00:00	Stop heating; roller door upwarp is 0 cm, not exceeding 1.91 cm