Download or read book Investigation of Methods Used to Predict the Heat Release Rate and Enclosure Temperatures During Mattress Fires written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fires in buildings ranging in size from small residential houses to large office buildings and sports stadiums pose significant threats to human safety. Many advances have been made in the area of fire behaviour modeling and have lead to much safer, and more efficient fire protection engineering designs, saving countless lives. Fire, however, is still a difficult phenomenon to accurately model and the most important quantity used to describe a fire is the heat (energy) release rate (HRR). Predictions of the fire hazard posed by mattresses, using relatively simple modeling techniques, were investigated in this research work and compared to full-scale experimental results. Specifically, several common methods of predicting the HRR from a mattress fire were examined. Current spatial separation guidelines, which exist in order to mitigate fire spread between buildings, were used to predict radiation heat flux levels emitted by a burning building and compared to experimental results measured in the field. Enclosure ceiling temperatures, predicted using the Alpert temperature correlation, and average hot gas layer temperature predictions were also compared to experimental results. Results from this work indicate that the t-squared fire heat release rate modeling technique combined with the common Alpert ceiling temperature correlation, provide a reasonable prediction of real-life fire temperatures as results within 30% were obtained. The cone calorimeter was also found to be a useful tool in the prediction of full-scale fire behaviour and the guidelines used for spatial separation calculations were found to predict the radiant heat flux emitted by a burning building reasonably well.
Download or read book Investigation of Methods Used to Predict the Heat Release Rate and Enclosure Temperatures During Mattress Fires written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fires in buildings ranging in size from small residential houses to large office buildings and sports stadiums pose significant threats to human safety. Many advances have been made in the area of fire behaviour modeling and have lead to much safer, and more efficient fire protection engineering designs, saving countless lives. Fire, however, is still a difficult phenomenon to accurately model and the most important quantity used to describe a fire is the heat (energy) release rate (HRR). Predictions of the fire hazard posed by mattresses, using relatively simple modeling techniques, were investigated in this research work and compared to full-scale experimental results. Specifically, several common methods of predicting the HRR from a mattress fire were examined. Current spatial separation guidelines, which exist in order to mitigate fire spread between buildings, were used to predict radiation heat flux levels emitted by a burning building and compared to experimental results measured in the field. Enclosure ceiling temperatures, predicted using the Alpert temperature correlation, and average hot gas layer temperature predictions were also compared to experimental results. Results from this work indicate that the t-squared fire heat release rate modeling technique combined with the common Alpert ceiling temperature correlation, provide a reasonable prediction of real-life fire temperatures as results within 30% were obtained. The cone calorimeter was also found to be a useful tool in the prediction of full-scale fire behaviour and the guidelines used for spatial separation calculations were found to predict the radiant heat flux emitted by a burning building reasonably well.
Download or read book Flammability Assessment Methodology for Mattresses written by John R. Shields and published by . This book was released on 2000 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study addresses the fire behavior of bed assemblies, including a mattress, foundation and bedclothes. The focus is on development and application of a reproducible means of simulating the thermal impact which burning bedclothes materials impose on a mattress. Twelve dtfferent sets of bedclothes were burned on top of an inert mattress to obtain data on heat release rate, flame spread rates and, to a lesser degree, heat flux to nearby objects. Six of these sets were selected for characterization of the heat flux patterns they impose on an inert mattress surface. A unique, infrared imaging technique was developed for this purpose. The results, in terms of peak heat flux, duration and area, were used to develop a pair of propane burners which impose on the side and top of a mattress heat flux patterns which mimic those imposed at a typical, fixed location by burning bedclothes. These burners were applied to a set of five mattress designs, including one typical of current residential mattresses; the four other designs included potentially less flammable design elements to permit a wide range of fire behaviors. This facilitated a broad assessment of the ability of the gas burners to predict the fire behavior of mattresses. The duration of the burner application was varied. Also, as a check on the burner-induced behavior, the same mattress designs were tested with one bedclothes combination. All of the altered designs offered some modification in fire behavior but they differed strongly in overall effect. The effects ranged from a delay in the time to reach an undiminished heat release rate peak to greatly reduced mattress involvement in the fire. The burners successfully predicted the behavior of four of the mattress designs. They failed to predict the fire behavior (with burning bedclothes) of one design since the bedclothes produced a phenomenon (internal overpressurization and seam rupture) which the burners did not produce.
Download or read book Data for Room Fire Model Comparisons written by Richard D. Peacock and published by DIANE Publishing. This book was released on 1993-12 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the types of analyses that can be used to examine large-scale room fire test data to prepare the data for comparison with zone-based fire models. The base of experimental data ranges in complexity from one room tests with individual furniture items to a series of tests conducted in a multiple story hotel equipped with a zoned smoke control system. Graphs and diagrams.
Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1988 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications written by United States. National Bureau of Standards and published by . This book was released on 1986 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the National Institute of Standards and Technology Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1985 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Building and Fire Research Laboratory Publications written by Building and Fire Research Laboratory (U.S.) and published by . This book was released on 1990 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the National Bureau of Standards Catalog written by United States. National Bureau of Standards and published by . This book was released on 1984 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enclosure Fire Hazard Analysis Using Relative Energy Release Criteria burning Rate and Combustion Control written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-22 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method for predicting the probable course of fire development in an enclosure is presented. This fire modeling approach uses a graphic plot of five fire development constraints, the relative energy release criteria (RERC), to bound the heat release rates in an enclosure as a function of time. The five RERC are flame spread rate, fuel surface area, ventilation, enclosure volume, and total fuel load. They may be calculated versus time based on the specified or empirical conditions describing the specific enclosure, the fuel type and load, and the ventilation. The calculation of these five criteria, using the common basis of energy release rates versus time, provides a unifying framework for the utilization of available experimental data from all phases of fire development. The plot of these criteria reveals the probable fire development envelope and indicates which fire constraint will be controlling during a criteria time period. Examples of RERC application to fire characterization and control and to hazard analysis are presented along with recommendations for the further development of the concept. Coulbert, C. D. Jet Propulsion Laboratory NASA-CR-158075, JPL-PUB-78-51 NAS7-100...
Download or read book Combustion of mattresses exposed to flaming ignition sources written by Vytenis Babrauskas and published by . This book was released on 1977 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enclosure Fire Dynamics Second Edition written by Björn Karlsson and published by CRC Press. This book was released on 2022-06-27 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the outbreak of compartment fires, and the mechanisms for best controlling them Derives simple analytical relationships from first principles and shows how to compare the derived equations with experimental data Provides the calculational procedures and computer models needed to design a building for safety Cites the most up to date standards and references throughout Includes numerous chapter problems to test student readers' understanding of fire behavior
Download or read book Introduction to Mathematical Fire Modeling written by Marc L. Janssens and published by CRC Press. This book was released on 2000-07-14 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer simulation proves to be a valuable tool for the analysis and prediction of compartment fires. With the proper understanding and software, fire safety professionals can use modeling tools and methods to find answers to many critical questions relating to the prevention, investigation, and reconstruction of compartment fires. Thorough
Download or read book Fire Behavior of Upholstered Furniture and Mattresses written by John Krasny and published by Cambridge University Press. This book was released on 2008-12-05 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flammability of upholstered furniture is a major concern to engineers and others across a wide swath of organizations. This book was written to provide its audience with the science and engineering needed to better understand the combustibility of the products they manufacture, purchase, and try to extinguish. It addresses the science and engineering information needs of public and private sector fire technology personnel, including fire service students and officers, fire investigators, fire protection engineers, government officials; textile, chemical, and furniture industry personnel, or institutional furniture purchasers.
Download or read book Evaluation of the Computer Fire Model DETACT QS written by Society for Fire Protection Engineers and published by Springer. This book was released on 2021-12-22 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: This engineering practice Guide, based on the DETACT-QS program, describes a model for predicting the response time of ceiling-mounted heat detectors/sprinklers and smoke detectors, installed under large unobstructed ceilings, for fires with user-defined, time-dependent heat release rate curves. The Guide provides information on the technical features, theoretical basis, assumptions, limitations, and sensitivities as well as guidance on the use of DETACT-QS. Evaluation is based on comparing predictions from DETACT-QS with results from full-scale fire experiments conducted in compartments with ceiling heights ranging from 2.44 m (8 ft) to 12.2 m (40 ft) and peak fire heat release rates ranging from 150 kW to 3.8 MW. Use of this model with building geometries or fire characteristics other than those used in this evaluation may require further evaluation or testing.
Download or read book Heat Release in Fires written by Vytenis Babrauskas and published by Taylor & Francis. This book was released on 1992 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of heat release rate study as an aspect of fire protection engineering was a major breakthrough of the 1980s. This book provides a synthesis for both professionals and students by authorities from throughout the world.
