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 Engineering Laboratory /                  Fire Research Division
      National Fire Research Laboratory


    Breadcrumb
    Fire Calorimetry Database (FCD)
          Vertical Upward Flamespread on Parallel PanelsTest43_RedCedar_R3

      Table 1. Test Information
        Name
            Test43_RedCedar_R3Date
            01/22/2021 5:38:40 AM ESTDescription
            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 surfaceSpecimen
            7/8" thick, 22.5" wide, 96" tall planks of Western Red CedarIgnition
            propane burnerProject ID (s)
            Vertical Upward Flamespread on Parallel PanelsTest Director
            LeventonDownload CSV data file

      Timelapse Video with Heat Release Rate Plot
  Your browser does not support the video tag.Table 2. Summary of Test Results
        Measurement
          Value
          Uc
          UnitPeak Heat Release Rate, PHRR
            398
            22
            kWTime to Peak Heat Release Rate
            1.47
            0.17
            minTotal Heat Released, THR
            38.8
            3.2
            MJGas Burner Total Heat Released, NGTHR
            15.30
            0.46
            MJHeat Release Quality Confirmation, HRQC
            Not measured
            -
            MJ/MJNet Specimen Mass (gravimetric), NM = Mi-Mf
            3.10
            0.28
            kgNet Effective Heat of Combustion = THR / NM
            12.5
            1.5
            MJ/kgO2 Yield = O2 Consumed / NM
            1.25
            0.12
            kg/kgCO2 Yield = CO2 Generated / NM
            1.22
            0.12
            kg/kgCO Yield = CO Generated / NM
            0.0179
            0.0018
            kg/kgSoot Yield = Soot Generated / NM
            0.00271
            0.00063
            kg/kgBaseline Hood Exhaust Flow
            16.99
            0.51
            kg/sTest Duration = Time(Fire Out) - Time(Ignition)
            5.35
            0.03
            min*Uc = Combined Expanded Uncertainty with 95% confidence level*

      Table 3. Summary of Test Input Parameters
        Parameter
          Value
          Uc
          UnitFuel Type
            Western Red Cedar
            -
            -Hood Size
            6
            -
            mEffective Duct Diameter
            1.975
            0.005
            mExhaust Flow Correction Factor
            1.028
            0.029
            -Net Heat of Combustion (per unit mass O2), Ef
            13.61
            0.54
            MJ/kgNet Heat of Combustion(per unit mass fuel), HOCf
            20.00
            1.20
            MJ/kgInitial Specimen Mass, Mi (gravimetric)
            21.25
            0.20
            kgFinal Specimen Mass, Mf (gravimetric)
            18.15
            0.20
            kgPlot 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 Image1
  0.00
  Ignition
  Ignition
  peak
  1.47
  Peak HRR
  Peak HRR
  2
  2.48
  pull HF gauge sheilds
  pull HF gauge sheilds
  3
  4.27
  gas off
  gas off
  4
  5.35
  Fire Out
  Fire OutTable 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, 2019https://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_8.5.1


      Last Updated November 8, 2023
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