The Experts below are selected from a list of 11145 Experts worldwide ranked by ideXlab platform

Xiaolin Hu - One of the best experts on this subject based on the ideXlab platform.

  • Winter Simulation Conference - Agent-based modeling and simulation of wildland Fire Suppression
    2007 Winter Simulation Conference, 2007
    Co-Authors: Xiaolin Hu
    Abstract:

    Simulation of wildland Fire Suppression is useful to evaluate deployment plans of Firefighting resources and to experiment different Fire Suppression strategies and tactics. Previous work of Fire Suppression simulation uses analytical models based on a continuous space. This paper presents a design of Fire Suppression simulation using a discrete event agent model based on a discrete cellular space. We present a framework of wildland Fire Suppression simulation and describe how Firefighting agents in direct attack, parallel attack, and indirect attack are modeled. Experiment results are provided to demonstrate the agent models and to compare them in different Fire Suppression scenarios.

  • Agent-based modeling and simulation of wildland Fire Suppression
    2007 Winter Simulation Conference, 2007
    Co-Authors: Xiaolin Hu
    Abstract:

    Simulation of wildland Fire Suppression is useful to evaluate deployment plans of Firefighting resources and to experiment different Fire Suppression strategies and tactics. Previous work of Fire Suppression simulation uses analytical models based on a continuous space. This paper presents a design of Fire Suppression simulation using a discrete event agent model based on a discrete cellular space. We present a framework of wildland Fire Suppression simulation and describe how Firefighting agents in direct attack, parallel attack, and indirect attack are modeled. Experiment results are provided to demonstrate the agent models and to compare them in different Fire Suppression scenarios.

Guangxuan Liao - One of the best experts on this subject based on the ideXlab platform.

  • Experimental study of water mist Fire Suppression in tunnels under longitudinal ventilation
    Building and Environment, 2009
    Co-Authors: Lvyi Chen, Guangxuan Liao
    Abstract:

    Abstract This paper studies water mist Fire Suppression under different longitudinal ventilation velocities in tunnels by small-scale experiments. After a scaling study, two mist nozzles are used for suppressing crib Fires under 5 ventilation speeds. The result comes out that Fire Suppression process can be divided into three stages including flame unitary restraining stage, surface flame extinguishing stage and inside flame Suppression stage. Several factors influencing efficiency are investigated. When the interval between mist nozzle and Fire source enlarges, the relationship curve between Fire Suppression time and ventilation velocity shows a ‘V’ figure. The best ventilation speed exists. Following the rules summarized, a coupling system of water mist and ventilation may increase Fire Suppression efficiency remarkably.

  • a comparison between superfine magnesium hydroxide powders and commercial dry powders on Fire Suppression effectiveness
    Process Safety and Environmental Protection, 2008
    Co-Authors: Kaiqian Kuang, Xin Huang, Guangxuan Liao
    Abstract:

    Abstract The effectiveness of superfine magnesium hydroxide powders and commercial dry powder in Fire Suppression were compared in a laboratory-scale, immovable Fire Suppression apparatus. The investigation focused on their Suppression effectiveness under various pressures. It likewise studied the relationship between the powders’ surface structures and their effectiveness on Fire Suppression. The microcosmic structure of the powders was observed by scanning electron microscope (SEM), while the Thermal Gravity Analysis (TGA) technique was used to analyze the thermal behavior of the superfine magnesium hydroxide powders. By analyzing the results, it could be concluded that the pressure, the particle size, and the microcosmic structure of the powders’ surface mainly decide the capability of the powders to extinguish the Fire. Comparing this with commercial dry powders, superfine magnesium hydroxide powders extinguished the Fire in less than 10 s.

  • progress in water mist Fire Suppression technology
    Journal of University of Science and Technology of China, 2006
    Co-Authors: Guangxuan Liao, Xin Huang, Beihua Cong, Xishi Wang
    Abstract:

    Some recent studies of water mist Fire Suppression technology in China were introduced, and the measurements of water mist characteristics, methods of generating water mist and Fire Suppression experiments were summarized in detail. The extinguishing mechanisms and future works of water mist were also discussed. Characteristics of water mist strongly influence Fire Suppression effectiveness. The LDV/APV, DPIV and advanced DPIVS systems were used to measure the spray characteristics. To varying degrees, the traditional water mist nozzles have disadvantages. Therefore, new methods of generating water mist (i. e. effervescent atomization) were investigated and different kinds of nozzles were compared. In order to study the Fire Suppression effectiveness in different Fire scenarios, small-scale and full-scale experiments were performed.

Xin Huang - One of the best experts on this subject based on the ideXlab platform.

  • a comparison between superfine magnesium hydroxide powders and commercial dry powders on Fire Suppression effectiveness
    Process Safety and Environmental Protection, 2008
    Co-Authors: Kaiqian Kuang, Xin Huang, Guangxuan Liao
    Abstract:

    Abstract The effectiveness of superfine magnesium hydroxide powders and commercial dry powder in Fire Suppression were compared in a laboratory-scale, immovable Fire Suppression apparatus. The investigation focused on their Suppression effectiveness under various pressures. It likewise studied the relationship between the powders’ surface structures and their effectiveness on Fire Suppression. The microcosmic structure of the powders was observed by scanning electron microscope (SEM), while the Thermal Gravity Analysis (TGA) technique was used to analyze the thermal behavior of the superfine magnesium hydroxide powders. By analyzing the results, it could be concluded that the pressure, the particle size, and the microcosmic structure of the powders’ surface mainly decide the capability of the powders to extinguish the Fire. Comparing this with commercial dry powders, superfine magnesium hydroxide powders extinguished the Fire in less than 10 s.

  • progress in water mist Fire Suppression technology
    Journal of University of Science and Technology of China, 2006
    Co-Authors: Guangxuan Liao, Xin Huang, Beihua Cong, Xishi Wang
    Abstract:

    Some recent studies of water mist Fire Suppression technology in China were introduced, and the measurements of water mist characteristics, methods of generating water mist and Fire Suppression experiments were summarized in detail. The extinguishing mechanisms and future works of water mist were also discussed. Characteristics of water mist strongly influence Fire Suppression effectiveness. The LDV/APV, DPIV and advanced DPIVS systems were used to measure the spray characteristics. To varying degrees, the traditional water mist nozzles have disadvantages. Therefore, new methods of generating water mist (i. e. effervescent atomization) were investigated and different kinds of nozzles were compared. In order to study the Fire Suppression effectiveness in different Fire scenarios, small-scale and full-scale experiments were performed.

Gerard G. Back - One of the best experts on this subject based on the ideXlab platform.

  • Water Mist Fire Suppression Systems
    SFPE Handbook of Fire Protection Engineering, 2016
    Co-Authors: Jack R. Mawhinney, Gerard G. Back
    Abstract:

    This chapter addresses the engineering of fixed Fire Suppression systems that discharge water mist. The term water mist, as currently understood in the Fire protection field, relates to fine water sprays with no drops larger than 1.0 mm, or 1000 μm (micrometers or microns) [1, 2]. Such sprays are not true mists, however. A mist in the scientific sense consists of drops somewhere on a continuum between aerosol (particles with diameter approximately 5 μm) and fog (droplet diameters ranging between 10 and 100 μm). Particles less than 20 μm in diameter take a long time to settle out and, hence, create what is recognized in both literature and science as a “mist.” A water mist as intended for Fire protection purposes is a fine water spray consisting of a range of droplet sizes, many of which are in the range of true mist particles and some of which are considerably larger. Water mist nozzles produce sprays that have a higher fraction of very fine droplets, in the range of mist, than is typical of standard sprinklers or water spray nozzles.

  • A Review of Water Mist Technology for Fire Suppression
    1994
    Co-Authors: P A Tatum, Craig L. Beyler, P. J. Dinenno, E K Budnick, Gerard G. Back
    Abstract:

    Abstract : The potential efficacy of water mist Fire Suppression systems has been demonstrated in a wide range of applications and by numerous experimental programs. These applications have included Class B spray and pool Fires, aircraft cabins, shipboard machinery and engine room spaces, shipboard accommodation spaces, and computer and electronics applications. To summarize these experimental efforts, the efficacy of a particular water mist system is strongly dependent on the ability to not only generate sufficiently small droplet sizes but also distribute sufficient mist concentrations throughout the compartment. A widely accepted critical concentration of water droplets required to extinguish a Fire is yet to be determined. Factors that contribute to the success or failure of a water mist system for a particular application include droplet size, velocity, the spray pattern geometry as well as the momentum and mixing characteristics of the spray jet, and the geometry and other characteristics of the protected area. At this time, the effect of these factors on system effectiveness is not well known. This will necessitate evaluation of water mist in context of a specific system for unique applications for the reasonable future unless breakthroughs in understanding of mist distribution and flame interaction occur through research. Total flooding agent, Fire Suppression, Water mist

Rajkumar Buyya - One of the best experts on this subject based on the ideXlab platform.

  • Fire Suppression and On-Site Security
    Cloud Data Centers and Cost Modeling, 2020
    Co-Authors: Caesar Wu, Rajkumar Buyya
    Abstract:

    This chapter consists of two main topics. One is the data center Fire Suppression system and the other is the on-site security system. Regarding the Fire Suppression issue, this chapter discusses how to select the best solution for a Fire Suppression system for a particular data center. One of the criteria for selection is cost considerations. The second topic is on-site or physical security systems. Based on the TIA-942 standard, different tiers of data center should have different physical security systems. The physical security system will be organized with three layers, the physical layer, the organizational layer, and the infrastructure layer.

  • Chapter 10 – Fire Suppression and On-Site Security
    Cloud Data Centers and Cost Modeling, 2015
    Co-Authors: Caesar Wu, Rajkumar Buyya
    Abstract:

    This chapter consists of two main topics. One is the data center Fire Suppression system and the other is the on-site security system. Regarding the Fire Suppression issue, this chapter discusses how to select the best solution for a Fire Suppression system for a particular data center. One of the criteria for selection is cost considerations. The second topic is on-site or physical security systems. Based on the TIA-942 standard, different tiers of data center should have different physical security systems. The physical security system will be organized with three layers, the physical layer, the organizational layer, and the infrastructure layer.