Novel exterior cover design for radiant heat resistance of firefighting robots in large-scale petrochemical complex fires

Table 4 Experimental conditions for radiative heat irradiation

Experiment symbol^a	Vent status	The initial state of the radiation heat shielding cloth	Intermittent spraying pattern
(e1) (OD-N)	Open	Dry	None
(e2) (CD-N)	Close	Dry	None
(e3) (OW-N)	Open	Wet enough	None
(e4) (OD-1/30)	Open	Dry	Spray 10 s, stop 290 s Duty cycle: 1/30
(e5) (OD-1/20)	Open	Dry	Spray 3 s, stop 57 s Duty cycle: 1/20
(e6) (OD-1/60)	Open	Dry	Spray 1 s, stop 59 s Duty cycle: 1/60
(e7) (OW-C)	Open	Wet enough	Continuous

Water supply volume: approx. 0.001 m³/min Water supply to the back of the radiant heat shielding cloth by turning the pump on and off
^a(e〇) (△□ − ▼)
〇: experiment number
△: vent status O (open), C (close)
□: Initial state of the radiation heat shielding cloth D (dry), W (wet)
▼: intermittent spraying pattern
N (none), duty cycle, C (continuous)