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You searched on: Author: jiann yang

Displaying records 101 to 110 of 136 records.
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101. 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 ...

102. 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 ...

103. 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 ...

104. 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. ...

105. Simple Piezoelectric Droplet Generator
Published: 1/1/1997
Authors: Jiann C Yang, W. S. Chien, M D King, William L Grosshandler
Abstract: A design for a piezoelectric on-demand droplet generator is presented. Its simple construction and ease of operation distinguish this generator from other previously reported. The droplet generator has been successfully used to produce droplets of aq ...

106. Aerosol and SPGG Technology Fire Suppression Screening Methods (NISTIR 5904)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5904
Published: 10/28/1996
Authors: William L Grosshandler, Jiann C Yang, Thomas George Cleary
Abstract: The search for alternatives to halons for fire suppression applications has identified not only new compounds which have physical properties similar to the bromochlorofluorocarbon family, but also inert gaseous agents that are released from a solid s ...

107. Combustion of Polymethylmethacrylate Spheres at Normal and Reduced Gravity (NISTIR 5904)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5904
Published: 10/28/1996
Authors: Jiann C Yang, Anthony P Hamins, N Gorchkov, M Glover
Abstract: Polymer combustion is a highly complicated process where chemical reactions may occur not only in the gas phase, but also in the condensed phase as well as at the solid-gas interphase. The complication arises due to the coupling between the condensed ...

108. Evaporation of a Small Aqueous Suppressing Agent Droplet (NISTIR 5904)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5904
Published: 10/1/1996
Authors: W. S. Chien, Jiann C Yang, M D King, William L Grosshandler
Abstract: Due to its ozone-depleting potential, halon 1301 (CF3Br) has been banned from production under the Montreal Protocol. The research for halon replacement(s) has led to the reconsideration of using water in certain applications. However, under cold sto ...

109. Minimum Mass Flux Requirements to Suppress Burning Surfaces With Water Sprays (NISTIR 5795)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5795
Published: 4/1/1996
Authors: Jiann C Yang, C I Boyer, William L Grosshandler
Abstract: Experimental measurements of extinguishment times of burning solid fuels using water were conducted using a prototype micronozzle array and a piezoelectric droplet generator. Solid fuels considered included solid white pine, polymethylmethacrylate, a ...

110. Rapid Discharge of a Fire Suppressing Agent
Published: 1/1/1996
Authors: Jiann C Yang, William M Pitts, B D Breuel, William L Grosshandler, W G Cleveland
Abstract: This paper describes an experimental method to study the rapid discharge of a fire suppressant (C3F8) from a pressurized vessel. Experimental observations inside and at the exit of the vessel were made using high-speed photography. Boiling was not ob ...

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