Name | Test39_4trashcan_R2
|
---|---|
Date | |
Description | 4 trashcans ,2.32 kg crinkle paper per can, 4 wicks soaked in 10 mL each. ignition marked as wick is lit with torch, separated by one diameter. |
Specimen | trashcans filled with paper
|
Ignition | acetone wick
|
Project ID (s) | |
Test Director | McGrattan
|
Measurement | Value | Uc | Unit |
---|---|---|---|
Peak Heat Release Rate, PHRR
|
705
|
43
|
kW
|
Time to Peak Heat Release Rate
|
8.85
|
0.17
|
min
|
Total Heat Released, THR
|
453
|
32
|
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
|
17.460
|
0.028
|
kg
|
Net Effective Heat of Combustion = THR / NM
|
25.9
|
1.8
|
MJ/kg
|
O2 Yield = O2 Consumed / NM
|
1.943
|
0.062
|
kg/kg
|
CO2 Yield = CO2 Generated / NM
|
2.126
|
0.077
|
kg/kg
|
CO Yield = CO Generated / NM
|
0.0282
|
0.0010
|
kg/kg
|
Soot Yield = Soot Generated / NM
|
0.0113
|
0.0019
|
kg/kg
|
Baseline Hood Exhaust Flow
|
20.61
|
0.62
|
kg/s
|
Test Duration = Time(Fire Out) - Time(Ignition)
|
55.08
|
0.03
|
min
|
Uc = Combined Expanded Uncertainty with 95% confidence level
Parameter | Value | Uc | Unit |
---|---|---|---|
Fuel Type
|
Cellulose, Plastic
|
- | - |
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
|
25.00
|
2.50
|
MJ/kg
|
Initial Specimen Mass, Mi (gravimetric)
|
20.00
|
0.02
|
kg
|
Final Specimen Mass, Mf (gravimetric)
|
2.54
|
0.02
|
kg
|
Event | Time (min) | Description | Video Snapshot Image |
---|---|---|---|
1
|
0.00
|
Ignition
|
|
peak
|
8.85
|
Peak HRR
|
|
2
|
30.03
|
stir embers
|
|
3
|
38.52
|
stir embers
|
|
4
|
53.40
|
Suppression for the past 5 minutes, pan snuffer
|
|
5
|
55.08
|
Fire Out
|
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
NIST Fire Calorimetry Database (FCD)
https://doi.org/10.18434/mds2-2314