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http://dx.doi.org/10.7731/KIFSE.2018.32.5.034

Analysis on the Effects of the Heat Loss Coefficient on the Operation Time of Sprinkler in Compartment Fire  

You, Woo Jun (Department of Architecture & Fire Safety, Dong Yang University)
Publication Information
Fire Science and Engineering / v.32, no.5, 2018 , pp. 34-39 More about this Journal
Abstract
In this study, the experiment conditions for the variation of heat release rate in compartment space were constructed to analyze the effects of fire spread and the operation time of sprinkler in accordance with the heat loss of the sprinkler's heat element. The compartment composed of fire board (width = 0.3 m, height = 0.5 m, length = 3.0 m), are manufactured to measure the temperature distributions in the inner space, the mass loss rate and heat release rate during the experiment of N-heptane pool fire test. Also, the operation time of sprinkler is analyzed with the installation of sprinkler and C-factor using Fire Dynamics Simulator Ver.6 under the experiment conditions. The results show that the operation time of sprinkler, which has RTI $100(m{\cdot}s)^{0.5}$ operating temperature $70^{\circ}C$, is 30 s~60 s for C-factor = 0 and 1, 62 s~92 s for C-factor = 3, and 120 s over for C-factor = 5, respectively.
Keywords
Sprinkler; C-factor; Operation time; Responsive time index; Heat release rate; Pool fire;
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  • Reference
1 G. Heskestad and H. F. Smith, "Investigation of a New Sprinkler Sensitivity Approval Test: Plunge Test", FMRC 22485, Factory Mutual Research Corporation
2 N. E. Gustafsson, "A Three Parameter Model for Characterizing Sprinkler Sensitivity and Predicting Sprinkler Activation Times. Part 1 and 2", C.E.A Subcommittee (1988).
3 C. R. Theobald, "Thermal Response of Sprinklers Part 1. FRS Heated Wind Tunnel", Fire Safety Journal, Vol. 12, No. 1, pp. 51-63 (1987).   DOI
4 James G. Quintiere, "Principle of Fire Behavior", Delmar Publishers, pp. 2-3 (1998).
5 K. McGrattan, S. Hostikka, R. Mcdermott, J. Floyd, C. Winschenk and K. Overholt, "Fire Dynamics Simulator User's Guide", NIST Special Publication 1019, p. 20 (2013).
6 T. L. Bergman, F. P. Incropera, D. P. DeWitt and A. S. Lavine, "Fundamentals of heat and mass transfer", John Wiley & Sons (2011).
7 Underwriters Laboratories, Standard for Automatic Sprinklers for Fire-protection Service, 8th edn, UL 199, Underwriters Laboratories 10. National Emergency Management Agency (2012)
8 W. J. You, G. H. Ko and H. S. Ryou, "Investigation of the Thermal Characteristics of a Circular Fusible-Type Sprinkler Using the Energy Transport Equation", Fire Technology, Vol. 52, No. 5, pp. 1409-1425 (2016).   DOI
9 Society of Fire Protection Engineers, "SFPE handbook of fire protection engineering", 4th edn, Chapter 2. National Fire Protection Association, Bethesda (2008).
10 W. J. You, H. J. Moon, M. C. Youm and H. S. Ryou, "An Investigation on the Thermal Characteristics of Heat-Responsive Element of Sprinkler Head", Journal of Korean Institute of Fire Science & Engineering, Vol. 26, No. 3, pp. 79-84 (2012).
11 V. Motevalli and S. Riahi, "Transient Ceiling Jet Temperature and Velocity Profiles in the Presence of an Upper Layer: Comparison with Predictions by LAVENT and JET Computer Fire Models", Journal of Fire Sciences, Vol. 26, No. 2, pp. 109-131 (2008).   DOI
12 T. Chen, H. Yuan, G. Su and W. Fan, "An Automatic Fire Searching and Suppression System for Large Space", Fire safety Journal, Vol. Vol. 39, No. 4, pp. 297-307 (2004).   DOI
13 FM Approval, "Approval Standard for Automatic Control Mode Sprinklers for Fire Protection", FM Class Number 2000 (2000).
14 Standards of Model Approval and Inspection Technology for Sprinkler Head. Notice No. 2012-63 (1992).
15 G. Heskestad and R. G. Bill, "Quantification of Thermal Responsiveness of Automatic Sprinklers Including Conduction Effects", Fire Safety Journal, Vol. 14, No. 1-2, pp. 113-125 (1988).   DOI
16 J. S. Pepi, "Design Characteristics of Quick Response Sprinklers", Grinnel Fire Protection Systems Company (1986).