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 Engineering Laboratory /                  Fire Research Division
      National Fire Research Laboratory


    Breadcrumb
    Fire Calorimetry Database (FCD)
          Cross Laminated Timber CompartmentsCLT_Room_Test_1-4

      Table 1. Test Information
        Name
            CLT_Room_Test_1-4Date
            03/21/2017 5:55:01 AM EDTDescription
            Furnished room with 3 layers of type X gypsum on all walls. Ceiling is exposed CLT. Narrow door openingSpecimen
            furnished studio apartment, CLT ceilingIgnition
            natural gas burnerProject ID (s)
            Cross Laminated Timber CompartmentsTest Director
            HoehlerDownload 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
            13,114
            786
            kWTime to Peak Heat Release Rate
            12.03
            0.17
            minTotal Heat Released, THR
            35,941
            2,218
            MJNatural Gas Burner Total Heat Released, NGTHR
            36.49
            0.53
            MJHeat Release Quality Confirmation, HRQC
            Not measured
            -
            MJ/MJNet Specimen Mass (gravimetric), NM = Mi-Mf
            Not measured
            -
            kgTotal Fuel Mass Burned, TFM = THR / HOCf
              1,806
              212
              kgNet Effective Heat of Combustion = THR / NM
            Not measured
            -
            MJ/kgO2 Yield = O2 Consumed / TFM
            1.54
            0.19
            kg/kgCO2 Yield = CO2 Generated / TFM
            2.01
            0.25
            kg/kgCO Yield = CO Generated / TFM
            0.0352
            0.0043
            kg/kgSoot Yield = Soot Generated / TFM
            Not measured
            -
            kg/kgBaseline Hood Exhaust Flow
            97.6
            2.9
            kg/sTest Duration = Time(Fire Out) - Time(Ignition)
            175.73
            0.03
            min*Uc = Combined Expanded Uncertainty with 95% confidence level*

      Table 3. Summary of Test Input Parameters
        Parameter
          Value
          Uc
          UnitFuel Type
            Cellulose, Plastic
            -
            -Hood Size
            15
            -
            mEffective Duct Diameter
            2.424
            0.005
            mExhaust Flow Correction Factor
            1.000
            0.029
            -Net Heat of Combustion (per unit mass O2), Ef
            13.10
            0.66
            MJ/kgNet Heat of Combustion(per unit mass fuel), HOCf
            19.90
            2.00
            MJ/kgInitial Specimen Mass, Mi (gravimetric)
            Not measured
            -
            kgFinal Specimen Mass, Mf (gravimetric)
            Not measured
            -
            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
  2
  11.55
  flashover
  flashover
  peak
  12.03
  Peak HRR
  Peak HRR
  3
  113.80
  flames extinguished on upper rear corner of wall 1
  flames extinguished on upper rear corner of wall 1
  4
  152.55
  flare up flames out doorway
  flare up flames out doorway
  5
  158.78
  start fire hose water suppression
  start fire hose water suppression
  6
  175.73
  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_8.3.3


      Last Updated May 14, 2021
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