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CLT_Room_Test_1-3

Table 1. Test Information
Name
CLT_Room_Test_1-3
Date
Description

Furnished room with 2 layers of type X gypsum on all walls and 3 layers on ceiling. Wall 1 is exposed CLT Double wide door opening

Specimen
furnished studio apartment, CLT wall
Ignition
natural gas burner
Project ID (s)
Test Director
Hoehler

Timelapse Video with Heat Release Rate Plot

Table 2. Summary of Test Results
Measurement Value Uc Unit
Peak Heat Release Rate, PHRR
14,171
855
kW
Time to Peak Heat Release Rate
12.93
0.17
min
Total Heat Released, THR
32,448
2,076
MJ
Natural Gas Burner Total Heat Released, NGTHR
40.48
0.59
MJ
Heat Release Quality Confirmation, HRQC
0.000
0.000
MJ/MJ
Net Specimen Mass (gravimetric), NM = Mi-Mf
Not measured -
kg
Total Fuel Mass Burned, TFM = THR / HOCf
1,631
194
kg
Net Effective Heat of Combustion = THR / NM
Not measured -
MJ/kg
O2 Yield = O2 Consumed / TFM
1.55
0.19
kg/kg
CO2 Yield = CO2 Generated / TFM
1.99
0.25
kg/kg
CO Yield = CO Generated / TFM
0.0693
0.0086
kg/kg
Soot Yield = Soot Generated / TFM
Not measured -
kg/kg
Baseline Hood Exhaust Flow
97.0
2.9
kg/s
Test Duration = Time(Fire Out) - Time(Ignition)
247.30
0.03
min

Uc = Combined Expanded Uncertainty with 95% confidence level

Table 3. Summary of Test Input Parameters
Parameter Value Uc Unit
Fuel Type
Cellulose, Plastic
- -
Hood Size
15
-
m
Effective Duct Diameter
2.424
0.005
m
Exhaust Flow Correction Factor
1.000
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
19.90
2.00
MJ/kg
Initial Specimen Mass, Mi (gravimetric)
Not measured -
kg
Final Specimen Mass, Mf (gravimetric)
Not measured -
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.
Table 4. Summary of Observed Test Events
Event Time (min) Description Video Snapshot Image
1
0.00
Ignition
Ignition
2
12.52
flashover
flashover
peak
12.93
Peak HRR
Peak HRR
3
89.30
delamination of first layer of CLT in progress
delamination of first layer of CLT in progress
4
167.85
start of delamination on second layer of CLT
start of delamination on second layer of CLT
5
241.92
Start water suppression
Start water suppression
6
247.30
Fire Out
Fire Out

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.
Plot of Carbon Dioxide Dry Volume Fraction in hood exhaust stream.
Plot of Carbon Dioxide Dry Volume Fraction in hood exhaust stream.
Plot of Carbon Monoxide Dry Volume Fraction in hood exhaust stream.
Plot of Carbon Monoxide Dry Volume Fraction in hood exhaust stream.
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.
Plot of Smoke Laser Extinction Coefficient in hood exhaust stream.
Plot of Smoke Laser Extinction Coefficient in hood exhaust stream.
Plot of Exhaust Duct Mass Flow Rate.
Plot of Exhaust Duct Mass Flow Rate.

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

Report Process Script Version
NFRL_Report_8.3.3
Last Updated May 14, 2021