8
Release Rate for the target system
Detect smoke? Detect fire? Detect both?
VFDS is capable of both fire and smoke recognition. The system designer is able to
decide whether to detect smoke or fire or both according to the combustibles variables.
Pic. 2.3-1 T-Squared Fires Curve
Different fire source growth pattern and similarity material table as Table 2.3-1
Fire material type
Growth rate
Wood pallets, stacked 1.5 ft ( ? meters) high (6-12% moisture)
Medium - Fast
Wood pallets, stacked 10 ft ( meters) high (6-12% moisture)
Fast
Wood pallets, stacked 16 ft high ( Meters) (6-12% moisture)
Fast
Mail bags, filled, stored 5 ft high ( meters)
Fast
Cartons on pallets, rack storage, 15-30 ft high
Medium - Fast
Cotton (also PE, PE/Cot, Acrylic/Nylon/PE), garments in 12-ft
high rack
Medium - Slow
PE letter trays, filled, stacked 5 ft high on cart
Fast
Paper products, densely packed in cartons, rack storage, 20 ft high Medium - Slow
Paper, vertical rolls, stacked 20 ft high
Slow
PE pallets, stacked 3 ft high
Fast
PU mattress, single, horizontal
Fast
Methyl alcohol
Ultra-fast
