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NIST is assisting the FAA in its research to improve fire detection in Class C and D aircraft cargo compartments. Class C and D compartments are inaccessible in flight. Class C compartments are required to have detection and suppression systems installed
An induced draft, gas-fired furnance orignally designed for outdoor installation without a flue pipe was tested by the tracer gas method to determine its off-cycle power burner draft factor. This report describes the feasibility of attaching a short flue
Thomas J. Ohlemiller, Thomas G. Cleary, John R. Shields
This paper focuses on the issue of fire growth on composite materials beyond the region immediately subjected to an ignition source. Suppression of this is one of the key issues in realizing the safe usage of composite structural materials. A vinyl ester
A representation of the forcing term in the Boltzmann equation based on Hermite expansion of the Boltzmann distribution function in velocity phase space is derived. Based on this description of the forcing term, a systematic comparison of previous Lattice
In responding to ASHRAE SPC 155P's interest and to provide additional evidence on the envisioned linear relationship between output and input of a boiler under part load conditions, the National Institute of Standards and Technology undertook to conduct a
Artur A. Chernovsky, William L. Grosshandler, Thomas G. Cleary, Michael D. Anderson
The performance of a fire detection system is determined as much by its ability to recognize correctly the non-fire state as to sense the presence of a real fire. Common fire detectors respond to particulate matter in the form of smoke from a flaming or
The "Refrigerants for the 21st Century" conferece was the third refrigerants conference jointly organized by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) and the National Institute of Standards and Technology. The
Annual heating (cooling) loads, peak heating (cooling) loads, and exterior roof temperatures for a small compact ranch house are computed using the Thermal Analysis Research Program (TARP) developed at the National Institute of Standards and Technology
Buildings significantly alter the environment. According to Worldwatch Institute (1), building construction consumes 40 percent of the raw stone, gravel, and sand used globally, and sand used globally each year, and 25 percent of the virgin wood. Buildings
One important goal of fire research is to study the formation and consumption of chemical species in and around a fire. Instruments which possess rapid temporal response are required for resolving species concentration fluctuations and for studying rapid
The rapid growth of computer-based systems such as simulation models, databases, and artificial intelligence decision-support systems, coupled with developments in information technology, have facilitated the development of computer-integrated knowledge
Jiann C. Yang, Michelle K. Donnelly, N C. Prive, William L. Grosshandler
The recent ban on halon 1301 production (as a result of its ozone depleting potential) has resulted in an extensive search for replacements and alternatives. The applications of fire suppression efficiency screening methods constitute an important aspect
This paper present pool boiling heat transfer data for ten different R123/hydrocarbon mixtures. The data consisted of pool boiling performance of a GEWA-T TM surface for pure R123 and for ten dilute solutions of five different hydrocarbons: (1) pentane, (2
NIST is assisting the FAA in its research to improve fire detection in Class C and D aircraft cargo compartments. Class C and D compartments are inaccessible in flight. Class C compartments are required to have detection and suppression systems installed
Jeffrey W. Gilman, Takashi Kashiwagi, Marc R. Nyden, James E. Brown, C L. Jackson, S M. Lomakin, E P. Giannelis, E Manias
In the pursuit of improved approaches to fire retarding polymers a wide variety of concerns must be addressed, in addition to the flammability issues. First, the low cost of commodity polymers requires that the fire retardant (FR) approach also be of low
R R. Buch, John R. Shields, Takashi Kashiwagi, Thomas Cleary, Kenneth D. Steckler
Silicones encompass a wide variety of noval materials that find applications in virtually every major industry sector. The dominant polymer in the silicone industry is polydimethylsiloxane (PDMS). The combustion of long chain PDMS exhibits a low heat
Areas of improved and unimproved soil near berthing Pier 1 at Treasure Island, California, were investigated by the Spectral-Analysis-of-Surface-Waves (SASW) test. The upper 12 m of sand fill beneath the approach to the pier had been densified by a
For many thermoplastic materials exposed to a strong heat flux from above, a layer of bubbles forms in the melted region near the upper surface. The action of these bubbles is observed to range from slow growth and bursting to vigorous boiling behavior
Recent work conducted in this laboratory has demonstrated the application of molecular modeling techniques to the design of flame retardants and fire resistant materials. This effort has culminated in the development of a novel computer program, hereafter
Since iron pentacarbonyl (Fe(CO)5) is among the most efficient flame inhibitors ever identified, research on flame inhibition by Fe(CO5) was recently started at NIST with the goal of understanding its mechanism. Obtaining a detailed understanding of this
Thomas G. Cleary, Artur A. Chernovsky, William L. Grosshandler, Michael D. Anderson
It is well known that smoke detectors do not instantaneously respond to smoke concentration directly outside the detector. The smoke must be transported through the detector housing to a sensing location inside the detector. The sensing time lag is a
Ralph Webb, a pioneer in enhanced heat transfer, proselytizes his field for the economic and technical benefit of industry. His mission has been, and always will be, the promotion of enhanced heat transfer technology. As a result, he has been instrumental
William M. Pitts, E Braun, Richard D. Peacock, Henri E. Mitler, Erik L. Johnsson, Paul A. Reneke, L G. Blevins
Gas-phase temperature is the most ubiquitous measurement recorded in fire environments and plays a central role in understanding of fire behavior. Generally, either bare-bead or sheathed thermcouples are employed. While it is recognized that such
William L. Grosshandler, Anthony P. Hamins, Kevin B. McGrattan, Cary Presser
The amount of a gaseous agent required to extinguish fires in full-scale engine nacelle tests varies greatly with the geometry of the fixture and the manner in which the flame is stabilized. It has been observed that if the test is designed to allow fuel
Kevin B. McGrattan, Anthony P. Hamins, L G. Blevins
A program is underwat at NIST to develop a numerical field model, referred to as the Industrial Fire Simulator (IFS), to simulate large scale fire phenomena. Because the model is intended to simulate fire flows within buildings whose volumes are on the