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Engineering Laboratory / Fire Research Division

National Fire Research Laboratory

Test057_TrashCanQuarter_R1

Table 1. Test Information
Name
Test057_TrashCanQuarter_R1
Date
Description

32 gal Plastic can w/ 314 g paper, 5 clear water bottles. Ignition=wick soaked w/ 5 mL heptane
Specimen
Rubber trash can
Ignition
heptane wick
Project ID (s)
Transient Combustion Calorimetry (TCC)
Test Director
McGrattan

Timelapse Video with Heat Release Rate Plot

Table 2. Summary of Test Results
Measurement Value Uc Unit
Peak Heat Release Rate, PHRR
300
18
kW
Time to Peak Heat Release Rate
19.78
0.17
min
Total Heat Released, THR
150.5
9.2
MJ
Gas Burner Total Heat Released, NGTHR
0
 -
MJ
Heat Release Quality Confirmation, HRQC
 Not measured -
MJ/MJ
Net Specimen Mass (gravimetric), NM = Mi-Mf
4.046
0.028
kg
Net Effective Heat of Combustion = THR / NM
37.2
2.3
MJ/kg
O2 Yield = O2 Consumed / NM
2.667
0.087
kg/kg
CO2 Yield = CO2 Generated / NM
2.621
0.096
kg/kg
CO Yield = CO Generated / NM
0.01740
0.00064
kg/kg
Soot Yield = Soot Generated / NM
0.0436
0.0056
kg/kg
Baseline Hood Exhaust Flow
3.160
0.095
kg/s
Test Duration = Time(Fire Out) - Time(Ignition)
34.12
0.03
min

Uc = Combined Expanded Uncertainty with 95% confidence level

Table 3. Summary of Test Input Parameters
Parameter Value Uc Unit
Fuel Type
Plastic
 - -
Hood Size
3
 -
m
Effective Duct Diameter
0.485
0.005
m
Exhaust Flow Correction Factor
1.033
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
30.00
6.00
MJ/kg
Initial Specimen Mass, Mi (gravimetric)
3.85
0.02
kg
Final Specimen Mass, Mf (gravimetric)
below detection limit
0.02
kg
Plot of Fire Heat Release Rate with event markers. Uncertainty bar shown at peak value.
Figure 1. Plot of Heat Release Rate data with event markers and error bars shown at peak.
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Table 4. Summary of Observed Test Events
Event Time (min) Description Video Snapshot Image
1
0.00
Ignition
Ignition
Download
peak
19.78
Peak HRR
Peak HRR
Download
2
34.12
Fire Out
Fire Out
Download

Table 5. Supplemental Data Plots

Plot of Oxygen Dry Volume Fraction in hood exhaust stream.
Plot of Oxygen Dry Volume Fraction in hood exhaust stream.
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Plot of Carbon Dioxide Dry Volume Fraction in hood exhaust stream.
Plot of Carbon Dioxide Dry Volume Fraction in hood exhaust stream.
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Plot of Carbon Monoxide Dry Volume Fraction in hood exhaust stream.
Plot of Carbon Monoxide Dry Volume Fraction in hood exhaust stream.
Download
Plot of Radiant Heat Flux data with event markers. r= radial distance from center of hood, h=height above floor.
Plot of Radiant Heat Flux data with event markers. r= radial distance from center of hood, h=height above floor.
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Plot of Smoke Laser Extinction Coefficient in hood exhaust stream.
Plot of Smoke Laser Extinction Coefficient in hood exhaust stream.
Download
Plot of Exhaust Duct Mass Flow Rate.
Plot of Exhaust Duct Mass Flow Rate.
Download

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_8.4.8
Last Updated April 6, 2023