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http://dx.doi.org/10.7731/KIFSE.8696ecf9

Test Method Using Shield-cup for Evaluating Response Characteristics of Fire Detectors  

Jang, Hyo-Yeon (Daejeon University)
Hwang, Cheol-Hong (Dept. of Fire and Disaster Prevention, Daejeon University)
Publication Information
Fire Science and Engineering / v.34, no.4, 2020 , pp. 36-44 More about this Journal
Abstract
It is necessary to predict the activation time of fire detectors accurately to improve the reliability for evaluating the required safe egress time (RSET) in performance-based fire safety design. In this study, problems of the plunge test, which is widely applied in assessing fire detectors, were examined through experiments and numerical simulations. In addition, a new shield-cup test method was proposed to address these problems. A fire detector evaluator (FDE) developed in a previous study was applied to ensure measurement accuracy and reproducibility. During the plunge tests, a significant measurement error was observed in the activation time of the smoke detector because of the rapid flow change when the detector was input. However, during the shield-cup tests, slight changes occurred in the flow inside the FDE when the detector as exposed to smoke. In conclusion, the proposed shield-cup test method is expected to be useful for evaluating the response characteristics of fire detectors more accurately in simulated fire environments.
Keywords
Fire detector; Smoke detector; Plunge test; Shield-cup test; Response characteristics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 J. H. McGuire and G. T. Tamura, "Simple Analysis of Smoke Flow Problems in High Rise Buildings", Fire Technology, Vol. 11, pp. 15-22 (1975).   DOI
2 T. Cleary and A. Chernovsky, "Particulate Entry Lag in Spot-Type Smoke Detectors", Proceedings of 6th International Symposium, International Association for Fire Safety Science (IAFSS) (1999).
3 G. Heskestad and H. F. Smith, "Investigation of a New Sprinkler Sensitivity Approval Test: The Plunge Test", Factory Mutual Research, FMRC Serial No. 22485 RC76-T-50 (1976).
4 G. Heskestad and R. G. Bill, "Quantification of Thermal Responsiveness of Automatic Sprinklers including Conduction Effects", Fire Safety Journal, Vol. 14, pp. 113-125 (1988).   DOI
5 W. G. Bissel, "An Investigation into the Use of the Factory Mutual Plunge Tunnel and the Resulting RTI for Fixed Temperature Fire Detectors" Master's Thesis, Worchester Polytechnic Institute (1988).
6 A. T. Pomeroy, "Analysis of the Effects of Temperature and Velocity on the Response Time Index of Heat Detectors", Master's Thesis, University of Maryland, MA, USA (2010).
7 N. C. Tsang, "Study on the Response Time Index of Sprinklers", International Journal on Engineering Performance-Based Fire Codes, Vol. 6, No. 4, pp. 234-241 (2004).
8 A. Tsui and M. J. Spearpoint, "Variability of Sprinkler Response Time Index and Conduction Factor using the Plunge Test", Building Services Engineering Research and Technology, Vol. 31, No. 2, pp. 163-176, (2010).   DOI
9 R. D. Blevins, "Applied Fluid Dynamics Handbook", New York, Van Nostrand Reinhold Company Inc. (1984).
10 J. Grosshandler, "Towards the Development of a Universal Fire Emulator-Detector Evaluator", Fire Safety Journal, Vol. 29, pp. 113-128 (1997).   DOI
11 T. Cleary, M. Anderson, J. Averill and W. Grosshandler, "Evaluating Multi-Sensor Fire Detectors in the Fire Emulator / Detector Evaluator", INTERFLAM '99, pp. 453-464 (1999).
12 K. H. Kim and C. H. Hwang, "Measurement of the Device Properties of a Ionization Smoke Detector to Improve Predictive Performance of the Fire Modeling", Journal of Korean Institute of Fire Science & Engineering, Vol. 27, No. 4, pp. 27-34 (2013).
13 H. W. Park, J. H. Cho, S. Y. Mun, C. H. Park, C. H. Hwang, S. C. Kim and D. G. Nam, "Measurement of Device Properties of Fixed Temperature Heat Detectors for the Fire Modeling", Fire Science and Engineering, Vol. 28, No. 1, pp. 37-43 (2014).   DOI
14 J. H. Cho, S. Y. Mun, C. H. Hwang and D. G. Nam, "Measurement of the Device Properties of Photoelectric Smoke Detector for the Fire Modeling", Fire Science and Engineering, Vol. 28, No. 6, pp. 62-68 (2014).   DOI
15 Y. Kametani, K. Fukagata, R. Orlu and P. Schlatter, "Effect of Uniform Blowing/Suction in a Turbulent Boundary Layer at Moderate Reynolds Number", International Journal of Heat and Fluid Flow, Vol. 55, pp. 132-142 (2015).   DOI
16 H. Y. Jang and C. H. Hwang, "Revision of the Input Parameters for the Prediction Models of Smoke Detectors Based on the FDS", Fire Science and Engineering, Vol. 31, No. 2, pp. 44-51 (2017).   DOI
17 G. Y. Yoon, H. S. Han, S. Y. Mun, C. H. Park and C. H. Hwang, "DB Construction of Activation Temperature and Response Time Index for Domestic Fixed-temperature Heat Detectors in Ceiling Jet Flow", Fire Science and Engineering, Vol. 34, No. 3, pp. 35-42 (2020).   DOI
18 C. H. Hwang, B. H. Yoo and C. E. Lee et al., "An Experimental Study of Smoke Movement in Tunnel Fire with Natural and Forced Ventilations", Transactions of Korean Society of Mechanical Engineers B, Vol. 29, No. 6, pp. 711-721 (2005).   DOI
19 B. J. Kim, J. H. Cho, C. H. Hwang and S. H. Park, "A Study on the Development of a Low-cost Device for Measuring the Optical Smoke Density", Fire Science and Engineering, Vol. 29, No. 4, pp. 81-88 (2015).   DOI
20 National Standards of the Republic of Korea, "Detailed Regulations for Model Approval & Inspection Technical Standards for Fire Detectors", Korea Fire Institute (KFI), National Fire Agency, Republic of Korea, p. 23 (2019).
21 S. S. Krishnan, K. C. Lin and G. M. Faeth, "Extinction and Scattering Properties of Soot Emitted from Buoyant Turbulent Diffusion Flames", Journal of Heat Transfer, Vol. 123, pp. 331-339 (2001).   DOI
22 S. Singh, M. N. Fiddler and S. Bililign, "Measurement of Side-dependent Single Scattering Albedo of Fresh Biomass Burning Aerosols usng the Extinction-Minus-scattering Technique with a Combination of Cavity Ring-down Spectroscopy and Nephelometry", Atmospheric Chemistry and Physics, Vol. 16, pp. 13491-13507 (2016).   DOI
23 G. Heskestad, "Generalized Characterization of Smoke Entry and Response for Products of Combustion Detectors", Proceedings of the Fire Detection for Life Safety Symposium (1975).
24 W. P. Arnott, H. Moosmuller and J. W. Walker, "Nitrogen Dioxide and Kerosene-Flame Soot Calibration of Photoacoustic Instruments for Measurement of Light Absorption by Aerosols", Review of Scientific Instruments, Vol. 71, No. 12, pp. 4545-4552 (2000).   DOI
25 K. McGrattan, S. Hostikka, R. McDermott, J. Floyd, C. Weinschenk and K. Overholt, "Fire Dynamics Simulator User's Guide", NIST Speical Publication 1019 (Sixth Edition), National Instiutue of Standards and Technology, Gaithersburg, MD (2015).
26 U.S. NRC and EPRI, "Nuclear Power Plant Fire Modeling Analysis Guiderlines", NUREG-1934 and EPRI 1023259, Finial Report (2012).
27 J. Dinenno, D. Drysdale, L. Craig, W. Douglas, P. Custer, J. Hall, J. Watts, "SFPE Handbook of Fire Protection Engineering", 3rd ed., National Fire Protection Association, Fosston, USA, pp. 560, 645 (2002).
28 G. W. Mulholland and C. Croarkin, "Specific Extinction Coefficient of Flame Generated Smoke", Fire and Materials, Vol. 24, pp. 227-230 (2000).   DOI
29 H. Y. Jang, S. Y. Mun and C. H. Hwang, "Sensitivity Analysis of Input Parameters for Prediction Models of Smoke Detectors based on FDS", Proceedings of 2017 Spring Annual Conference, Korean Institute of Fire Science & Engineering, pp. 133-134 (2017).