Name | 1B-PVSh0
|
---|---|
Date | |
Description | Shed only test with High Density Polyethylene shed (61.426 kg) high fuel load: wood cribs (6 x 1A) (114.4 kg) 300mL Heptane |
Specimen | HDPE Shed Wood Cribs
|
Ignition | heptane pan
|
Project ID (s) | |
Test Director | Maranghides A
|
Measurement | Value | Uc | Unit |
---|---|---|---|
Peak Heat Release Rate, PHRR
|
6,024
|
306
|
kW
|
Time to Peak Heat Release Rate
|
8.47
|
0.17
|
min
|
Total Heat Released, THR
|
4,197
|
228
|
MJ
|
Natural Gas Burner Total Heat Released, NGTHR
|
-3
|
- | 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
|
157.2
|
9.8
|
kg
|
Net Effective Heat of Combustion = THR / NM
|
Not measured | - | MJ/kg
|
O2 Yield = O2 Consumed / TFM
|
1.92
|
0.13
|
kg/kg
|
CO2 Yield = CO2 Generated / TFM
|
2.16
|
0.16
|
kg/kg
|
CO Yield = CO Generated / TFM
|
0.0187
|
0.0013
|
kg/kg
|
Soot Yield = Soot Generated / TFM
|
0.0128
|
0.0023
|
kg/kg
|
Baseline Hood Exhaust Flow
|
44.5
|
1.3
|
kg/s
|
Test Duration = Time(Fire Out) - Time(Ignition)
|
71.30
|
0.03
|
min
|
Uc = Combined Expanded Uncertainty with 95% confidence level
Parameter | Value | Uc | Unit |
---|---|---|---|
Fuel Type
|
HDPE and Cellulose
|
- | - |
Hood Size
|
9
|
- | m
|
Effective Duct Diameter
|
1.975
|
0.005
|
m
|
Exhaust Flow Correction Factor
|
1.055
|
0.034
|
- |
Net Heat of Combustion (per unit mass O2), Ef
|
13.61
|
0.54
|
MJ/kg
|
Net Heat of Combustion(per unit mass fuel), HOCf
|
26.70
|
0.80
|
MJ/kg
|
Initial Specimen Mass, Mi (gravimetric)
|
175.83
|
0.02
|
kg
|
Final Specimen Mass, Mf (gravimetric)
|
Not measured | - | kg
|
Event | Time (min) | Description | Video Snapshot Image |
---|---|---|---|
1
|
0.00
|
Ignition
|
|
peak
|
8.47
|
Peak HRR
|
|
2
|
40.03
|
stir ember pile in pan
|
|
3
|
60.07
|
water suppression
|
|
4
|
65.17
|
Ember recovery in progress
|
|
5
|
71.30
|
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