Sökning: "gas explosion"

Visar resultat 1 - 5 av 22 avhandlingar innehållade orden gas explosion.

  1. 1. Lithium-ion Battery Safety - Assessment by Abuse Testing, Fluoride Gas Emissions and Fire Propagation

    Detta är en avhandling från Gothenburg : Chalmers tekniska högskola

    Författare :Carl Fredrik Larsson; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fire; thermal runaway; gas emission; gas explosion; propagation; safety; abuse testing; Lithium-ion; cell case explosion; hydrogen fluoride;

    Sammanfattning : Lithium-ion batteries offer high energy and power densities as well as long life time but have a more narrow stability window compared to other battery types and contain reactive and flammable materials. In case of overheating the battery cell can release gas (vent) and, at temperatures of about 150-200 °C, a so called thermal runaway can occur, that is a rapid self-heated temperature increase which is typically accompanied with a large release of smoke and gas, fire and a potential cell case explosion or gas explosion. LÄS MER

  2. 2. Övertändning, backdraft och brandgasexplosion sett ur räddningstjänstens perspektiv

    Detta är en avhandling från Lunds universitet

    Författare :Lars-Göran Bengtsson; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; warning signs; smoke gas explosion; flashover; backdraft;

    Sammanfattning : This report presents a detailed description of the phenomena flashover, backdraft and smoke gas explosion. The physical and chemical processes which are involved in these phenomena are thoroughly discussed. The report also describes a number of compartment fire scenarios which are believed to be the most common scenarios occurring in Sweden. LÄS MER

  3. 3. An Experimental Study on the Dynamics of a Single Droplet Vapor Explosion

    Detta är en avhandling från Stockholm : KTH

    Författare :Roberta Concilio Hansson; Weimin Ma; Geroges Berthoud; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; steam explosions; radiography; melt preconditioning; noncondensable gas; NATURAL SCIENCES Physics Nuclear physics Low energy physics; NATURVETENSKAP Fysik Kärnfysik Lågenergifysik;

    Sammanfattning : The present study aims to develop a mechanistic understanding of the thermal-hydraulic processes in a vapor explosion, which may occur in nuclear power plants during a hypothetical severe accident involving interactions of high-temperature corium melt and volatile coolant. Over the past several decades, a large body of literature has been accumulated on vapor explosion phenomenology and methods for assessment of the related risk. LÄS MER

  4. 4. Off-gassing from thermally treated lignocellulosic biomass

    Detta är en avhandling från Stockholm : KTH

    Författare :Eleonora Borén; Markus Broström; Sylvia H. Larsson; Peter Björklund; Lorenz Gerber; Henrik Antti; Capucine Dupont; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Torrefaction; steam explosion; enclosed storage; CO; CO2; O2 depletion; VOCs; Tenax-TA; SPME; process settings; storage temperature; storage time;

    Sammanfattning : Off-gassing of hazardous compounds is, together with self-heating and dust explosions, the main safety hazards within large-scale biomass storage and handling. Formation of CO, CO2, and VOCs with concurrent O2 depletion can occur to hazardous levels in enclosed stored forest products. LÄS MER

  5. 5. The Circumstellar Environment of Type Ia Supernovae

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Raphael Ferretti; Rahman Amanullah; Ariel Goobar; Josh Simon; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Type Ia supernovae; extinction; supernova cosmology; Physics; fysik;

    Sammanfattning : Type Ia supernovae (SNe Ia) have proven to be extremely useful for measuring cosmological distances and were used for the discovery of the accelerated expansion of the universe. Although thousands of SNe Ia have been observed to date, many questions surrounding the physics of the explosions and the nature of their progenitor systems remain unanswered. LÄS MER