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You searched on: Author: jiann yang

Displaying records 91 to 100 of 132 records.
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91. Characterization and Identification of Super-Effective Thermal Fire Extinguishing Agents- First Annual Report
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6414
Published: 1/1/1999
Authors: William M Pitts, Jiann C Yang, Marcia L Huber, L G. Blevins
Abstract: The use of halons for fire fighting is being phased out due to their deleterious effects on stratospheric ozone. This report summarizes the first-year findings of a three-year study designed to characterize and identify super-effective thermal fire-f ...

92. Vapor Nucleation in a Cryogenic-Fluid-Dissovled-Nitrogen Mixture During Rapid Depressurization
Published: 1/1/1999
Authors: Jiann C Yang, Thomas George Cleary, Marcia L Huber, William L Grosshandler
Abstract: The behaviour of four cryogenic-fluid-dissolved-nitrogen mixtures inside a pressure vessel during rapid depressurization was investigated through experiment. The four fluids studied were CF3I, FC-218 (C3F8), HFC-125 (C2HF5), and CF3Br. Depressurizati ...

93. Dispersed Liquid Agent Fire Suppression Screening Method (NISTIR 6242)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6242
Published: 10/1/1998
Authors: Jiann C Yang, Michelle K Donnelly, N C Prive, William L Grosshandler
Abstract: 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 as ...

94. An Apparatus for Evaluating Liquid Fire Suppressants
Series: Special Publication (NIST SP)
Report Number: 984-4
Published: 5/12/1998
Authors: Jiann C Yang, Michelle K Donnelly, William L Grosshandler, N C Prive
Abstract: Cup burners have been extensively used as a fire suppression efficiency screening tool for gaseous halon alternatives. In the search for alternatives to halons in fire suppression, it is likely that several types of condensed-phase compounds will be ...

95. Fire Suppression Efficiency Screening Method
Published: 12/3/1997
Authors: Jiann C Yang, Michelle K Donnelly, William L Grosshandler
Abstract: Most of the current methods for fire suppression efficiency screening (e.g., cup burners) are designed for screening agents that can be delivered in the form of vapor. The search for alternatives to halons for fire suppression applications has identi ...

96. An Analysis of the Wright Patterson Full-Scale Engine Nacelle Fire Suppression Experiments (NISTIR 6193)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6193
Published: 11/1/1997
Authors: Anthony P Hamins, Thomas George Cleary, Jiann C Yang
Abstract: An analysis is presented on the full-scale suppression experiments conducted during 1996 and 1997 in the F-22 engine nacelle fire simulator at Wright Patterson Air Force Base. Experiments investigated the relative effectiveness of halogenated agents ...

97. Evaporation of a Small Water Droplet Containing an Additive
Published: 8/1/1997
Authors: M D King, Jiann C Yang, W. S. Chien, William L Grosshandler
Abstract: An experimental study on the evaporation of a small water droplet containing an additive on a heated, polished stainless-steel surface was performed. Solutions of water containing 30% (w/w) and 60% (w/w) of potassium acetate and sodium iodide were us ...

98. Experimental Observations of PMMA Spheres Burning at Reduced Gravity
Published: 5/19/1997
Authors: Jiann C Yang, Anthony P Hamins, M Glover, M D King
Abstract: Polymer combustion is a very complicated process which involves the coupling of gas-phase combustion, melting, pyrolysis and possible charring of the condensed phase. Although only a few studies on the combustion of a spherically shaped polymer have ...

99. Effect of Sample Size on the Heat Release Rate of Charring Materials
Published: 3/3/1997
Authors: S J Ritchie, Kenneth David Steckler, Anthony P Hamins, Thomas George Cleary, Jiann C Yang, Takashi Kashiwagi
Abstract: The burning of a horizontal wood slab situated atop an insulating substrate was modeled using three coupled submodels for the gas-phase, wood, and substrate processes. A global analytical model was used to determine the radiative and convective heat ...

100. Measured and Predicted Thermodynamic Properties of Selected Halon Alternative/Nitrogen Mixtures
Published: 1/1/1997
Authors: Jiann C Yang, I Vazquez, C I Boyer, Marcia L Huber, L A. Weber
Abstract: Experimental measurements of selected thermodynamic properties of alternative agent/nitrogen mixtures were performed. The selected alternatives were HFC-227 ea (C3HF7), CF3I, FC-218 (C3F8), and HFC-125 (C2HF5); CF3Br was also included as a reference. ...

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