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Control-Smoldering

Table 1. Test Information
Name
Control-Smoldering
Date
Description

Fire Barrier: None , Cover Fabric: Polypropylene (3kg), Filling Material: Polyethalene (6kg) and Polyester (4 kg) Ignition with smodering cigarette

Specimen
upholstered chair mockup
Ignition
18 kW propane square burner
Project ID (s)
Test Director
Zammarano

Timelapse Video with Heat Release Rate Plot

Table 2. Summary of Test Results
Measurement Value Uc Unit
Peak Heat Release Rate, PHRR
9.4
4.8
kW
Time to Peak Heat Release Rate
22.63
0.17
min
Total Heat Released, THR
below detection limit
6.4
MJ
Natural Gas Burner Total Heat Released, NGTHR
0
-
MJ
Heat Release Quality Confirmation, HRQC
Not measured -
MJ/MJ
Net Specimen Mass (gravimetric), NM = Mi-Mf
Not measured -
kg
Total Fuel Mass Burned, TFM = THR / HOCf
below detection limit
0.32
kg
Net Effective Heat of Combustion = THR / NM
Not measured -
MJ/kg
O2 Yield = O2 Consumed / TFM
-7
-51
kg/kg
CO2 Yield = CO2 Generated / TFM
-6
-39
kg/kg
CO Yield = CO Generated / TFM
below detection limit
2.5
kg/kg
Soot Yield = Soot Generated / TFM
Not measured -
kg/kg
Baseline Hood Exhaust Flow
21.49
0.64
kg/s
Test Duration = Time(Fire Out) - Time(Ignition)
40.28
0.03
min

Uc = Combined Expanded Uncertainty with 95% confidence level

Table 3. Summary of Test Input Parameters
Parameter Value Uc Unit
Fuel Type
Polyurethane Foam
- -
Hood Size
6
-
m
Effective Duct Diameter
1.975
0.005
m
Exhaust Flow Correction Factor
1.028
0.029
-
Net Heat of Combustion (per unit mass O2), Ef
13.10
0.66
MJ/kg
Net Heat of Combustion(per unit mass fuel), HOCf
20.00
4.00
MJ/kg
Initial Specimen Mass, Mi (gravimetric)
Not measured -
kg
Final Specimen Mass, Mf (gravimetric)
Not measured -
kg
Table 4. Summary of Observed Test Events
Event Time (min) Description Video Snapshot Image
1
0.00
Ignition
2
0.52
3 smoldering cigarttes placed in crevise
peak
22.63
Peak HRR
3
40.28
Fire Out

Table 5. Supplemental Data Plots

Bryant, R. and Bundy, M. The NIST 20 MW Calorimetry Measurement System for Large-Fire Research, Technical Note (NIST TN) 2077, 2019
https://doi.org/10.6028/NIST.TN.2077(link is external)

NIST Fire Calorimetry Database (FCD)
https://doi.org/10.18434/mds2-2314(link is external)

Report Process Script Version
NFRL_Report_8.3.3
Last Updated May 14, 2021