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 Engineering Laboratory /                  Fire Research Division
      National Fire Research Laboratory


    Breadcrumb
    Fire Calorimetry Database (FCD)
          Structure Separation Experiments: Shed Burns without Wind1B-WCl0

      Table 1. Test Information
        Name
            1B-WCl0Date
            04/22/2021 7:15:04 AM EDTDescription
            Shed only test with Wood shed (48.752 kg) low fuel load: wood cribs (2 x 1A)  (38.4 kg) 300mL HeptaneSpecimen
            Wood Shed Wood CribsIgnition
            heptane panProject ID (s)
            Structure Separation Experiments: Shed Burns without WindTest Director
            Maranghides ADownload 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
            4,011
            204
            kWTime to Peak Heat Release Rate
            4.78
            0.17
            minTotal Heat Released, THR
            1,456
            78
            MJNatural Gas Burner Total Heat Released, NGTHR
            -1
            -
            MJHeat Release Quality Confirmation, HRQC
            Not measured
            -
            MJ/MJNet Specimen Mass (gravimetric), NM = Mi-Mf
            Not measured
            -
            kgTotal Fuel Mass Burned, TFM = THR / HOCf
              90.4
              5.6
              kgNet Effective Heat of Combustion = THR / NM
            Not measured
            -
            MJ/kgO2 Yield = O2 Consumed / TFM
            1.185
            0.082
            kg/kgCO2 Yield = CO2 Generated / TFM
            1.54
            0.11
            kg/kgCO Yield = CO Generated / TFM
            0.0211
            0.0015
            kg/kgSoot Yield = Soot Generated / TFM
            0.00233
            0.00047
            kg/kgBaseline Hood Exhaust Flow
            23.57
            0.71
            kg/sTest Duration = Time(Fire Out) - Time(Ignition)
            40.07
            0.03
            min*Uc = Combined Expanded Uncertainty with 95% confidence level*

      Table 3. Summary of Test Input Parameters
        Parameter
          Value
          Uc
          UnitFuel Type
            Cellulose
            -
            -Hood Size
            9
            -
            mEffective Duct Diameter
            1.975
            0.005
            mExhaust Flow Correction Factor
            1.055
            0.034
            -Net Heat of Combustion (per unit mass O2), Ef
            13.61
            0.54
            MJ/kgNet Heat of Combustion(per unit mass fuel), HOCf
            16.12
            0.50
            MJ/kgInitial Specimen Mass, Mi (gravimetric)
            87.15
            0.02
            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
  peak
  4.78
  Peak HRR
  Peak HRR
  2
  30.02
  stir ember pile
  stir ember pile
  3
  35.22
  ember weighing in progress
  ember weighing in progress
  4
  40.07
  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_8.4.6


      Last Updated September 22, 2022
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