Name | Test65_RedCedar_R4
|
---|---|
Date | |
Description | 7/8" thick, 22.5" wide, 96"tall (in two sections, each 11.25"x96") planks of Western Red Cedar mounted to 1" thick Marinite board (new Marinite). Ignite using rectangular propane burner @ 60kW for ignition, burner on throughout experiment. Heat flux gauges mounted flush with fuel surface. |
Specimen | 7/8" thick, 22.5" wide, 96" tall planks of Western Red Cedar
|
Ignition | propane burner
|
Project ID (s) | |
Test Director | Leventon
|
Measurement | Value | Uc | Unit |
---|---|---|---|
Peak Heat Release Rate, PHRR
|
378
|
21
|
kW
|
Time to Peak Heat Release Rate
|
1.90
|
0.17
|
min
|
Total Heat Released, THR
|
65.1
|
5.7
|
MJ
|
Gas Burner Total Heat Released, NGTHR
|
28.68
|
0.86
|
MJ
|
Heat Release Quality Confirmation, HRQC
|
Not measured | - | MJ/MJ
|
Net Specimen Mass (gravimetric), NM = Mi-Mf
|
5.16
|
0.28
|
kg
|
Net Effective Heat of Combustion = THR / NM
|
12.6
|
1.3
|
MJ/kg
|
O2 Yield = O2 Consumed / NM
|
1.317
|
0.084
|
kg/kg
|
CO2 Yield = CO2 Generated / NM
|
1.169
|
0.077
|
kg/kg
|
CO Yield = CO Generated / NM
|
0.0392
|
0.0026
|
kg/kg
|
Soot Yield = Soot Generated / NM
|
0.00395
|
0.00088
|
kg/kg
|
Baseline Hood Exhaust Flow
|
17.28
|
0.52
|
kg/s
|
Test Duration = Time(Fire Out) - Time(Ignition)
|
10.23
|
0.03
|
min
|
Uc = Combined Expanded Uncertainty with 95% confidence level
Parameter | Value | Uc | Unit |
---|---|---|---|
Fuel Type
|
Western Red Cedar
|
- | - |
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
|
13.61
|
0.54
|
MJ/kg
|
Net Heat of Combustion(per unit mass fuel), HOCf
|
20.00
|
0.60
|
MJ/kg
|
Initial Specimen Mass, Mi (gravimetric)
|
21.05
|
0.20
|
kg
|
Final Specimen Mass, Mf (gravimetric)
|
15.89
|
0.20
|
kg
|
Event | Time (min) | Description | Video Snapshot Image |
---|---|---|---|
1
|
0.00
|
Ignition
|
|
peak
|
1.90
|
Peak HRR
|
|
2
|
8.03
|
gas to burner OFF
|
|
3
|
9.60
|
water suppression
|
|
4
|
10.23
|
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