Name | Test005_5HeptaneRags_R2
|
---|---|
Date | |
Description | 5 Rags soaked with 25 mL heptane each. Ignition=handheld lighter |
Specimen | cotton rags soaked with heptane
|
Ignition | propane wand
|
Project ID (s) | |
Test Director | McGrattan
|
Measurement | Value | Uc | Unit |
---|---|---|---|
Peak Heat Release Rate, PHRR
|
49.7
|
2.3
|
kW
|
Time to Peak Heat Release Rate
|
below detection limit
|
0.17
|
min
|
Total Heat Released, THR
|
6.99
|
0.52
|
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
|
0.296
|
0.028
|
kg
|
Net Effective Heat of Combustion = THR / NM
|
23.6
|
2.9
|
MJ/kg
|
O2 Yield = O2 Consumed / NM
|
1.76
|
0.18
|
kg/kg
|
CO2 Yield = CO2 Generated / NM
|
2.00
|
0.20
|
kg/kg
|
CO Yield = CO Generated / NM
|
0.0370
|
0.0038
|
kg/kg
|
Soot Yield = Soot Generated / NM
|
0.0067
|
0.0011
|
kg/kg
|
Baseline Hood Exhaust Flow
|
2.142
|
0.064
|
kg/s
|
Test Duration = Time(Fire Out) - Time(Ignition)
|
23.10
|
0.03
|
min
|
Uc = Combined Expanded Uncertainty with 95% confidence level
Parameter | Value | Uc | Unit |
---|---|---|---|
Fuel Type
|
Cellulose
|
- | - |
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
|
13.61
|
0.41
|
MJ/kg
|
Net Heat of Combustion(per unit mass fuel), HOCf
|
16.12
|
0.60
|
MJ/kg
|
Initial Specimen Mass, Mi (gravimetric)
|
0.35
|
0.02
|
kg
|
Final Specimen Mass, Mf (gravimetric)
|
0.06
|
0.02
|
kg
|
Event | Time (min) | Description | Video Snapshot Image |
---|---|---|---|
1
|
0.00
|
Ignition
|
|
peak
|
0.17
|
Peak HRR
|
|
2
|
23.10
|
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