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Article

Analysis on the Fire Growth Rate Index Considering of Scale Factor, Volume Fraction, and Ignition Heat Source for Polyethylene Foam Pipe Insulation

1
Department of Architecture & Fire Safety, Dong Yang University, Yeongju 36040, Korea
2
R&D Laboratory, Korea Fire Institute, Yongin 17088, Korea
*
Author to whom correspondence should be addressed.
Energies 2020, 13(14), 3644; https://doi.org/10.3390/en13143644
Received: 17 June 2020 / Revised: 1 July 2020 / Accepted: 2 July 2020 / Published: 15 July 2020
(This article belongs to the Special Issue Engineering Fluid Dynamics 2019-2020)
The fire growth rate index (FIGRA), which is the ratio of the maximum value of the heat release rate (Qmax) and the time (tmax) to reach the maximum heat release rate, is a general method to evaluate a material in the fire-retardant performance in fire technology. The object of this study aims to predict FIGRA of the polyethylene foam pipe insulation in accordance with the scale factor (Sf), the volume fraction of the pipe insulation (VF) and the ignition heat source (Qig). The compartments made of fireboard have been mock-up with 1/3, 1/4, and 1/5 reduced scales of the compartment as specified in ISO 20632. The heat release rate data of the pipe insulation with the variation of Sf, VF, and Qig are measured from 33 experiments to correlate with FIGRA. Based on a critical analysis of the heat transfer phenomenon from previous research literature, the predictions of Qmax and tmax are presented. It is noticeable that the fire-retardant grade of the polyethylene foam pipe insulation could have Grade B, C, and D in accordance with the test conditions within ±15% deviation of the predicted FIGRA. In case of establishing the database of various types of insulation, the prediction models could apply to evaluate the fire-retardant performance. View Full-Text
Keywords: pipe insulation; fire growth rate index; scale factor; volume fraction; ignition heat source; maximum heat release rate; time to reach maximum HRR (heat release rate) pipe insulation; fire growth rate index; scale factor; volume fraction; ignition heat source; maximum heat release rate; time to reach maximum HRR (heat release rate)
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MDPI and ACS Style

Park, J.W.; Lim, O.K.; You, W.J. Analysis on the Fire Growth Rate Index Considering of Scale Factor, Volume Fraction, and Ignition Heat Source for Polyethylene Foam Pipe Insulation. Energies 2020, 13, 3644. https://doi.org/10.3390/en13143644

AMA Style

Park JW, Lim OK, You WJ. Analysis on the Fire Growth Rate Index Considering of Scale Factor, Volume Fraction, and Ignition Heat Source for Polyethylene Foam Pipe Insulation. Energies. 2020; 13(14):3644. https://doi.org/10.3390/en13143644

Chicago/Turabian Style

Park, Jung Wook, Ohk Kun Lim, and Woo Jun You. 2020. "Analysis on the Fire Growth Rate Index Considering of Scale Factor, Volume Fraction, and Ignition Heat Source for Polyethylene Foam Pipe Insulation" Energies 13, no. 14: 3644. https://doi.org/10.3390/en13143644

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