Sökning: "mineral oils"

Visar resultat 16 - 20 av 20 uppsatser innehållade orden mineral oils.

  1. 16. Utveckling av laboration om trefastransformatorn : En studie om transformatorer

    M1-uppsats, KTH/Skolan för teknik och hälsa (STH)

    Författare :Mohammed Al-Breihi; [2014]
    Nyckelord :Electrical Power; three-phase transformer; lab; mohammed; al-breihi; study; transformer; Elkraft; trefastransformator; labb; mohammed; al-breihi; examensarbete; studie; transformator; transformatorn; trefastransformatorn;

    Sammanfattning : Examensarbetet har utforts pa uppdrag av enheten for Data- och Elektroteknik pa skolan for Teknik och Halsa, KTH. Denna studie om transformatorer omfattar deras funktioner och anvandningsomraden, hur de ar uppbyggda, hur karnan och lindningarna som ar transformatorns viktigaste delar ar uppbyggda, vilka materiel som anvands vid konstruktion av dessa samt vilka typer det finns av dem beskrivs i rapporten. LÄS MER

  3. 17. Functional performance criteria for comparison of less flammable transformer oils with respect to fire and explosion risk

    Master-uppsats, Lunds universitet/Avdelningen för Brandteknik; Lunds universitet/Avdelningen för Riskhantering och Samhällssäkerhet

    Författare :Denis Hellebuyck; [2013]
    Nyckelord :Flammability; transformer oils; fire and explosion risk; cone calorimeter test; Technology and Engineering;

    Sammanfattning : Power grids worldwide are expanding not only driven by ambitious clean energy, but also because of the rising need for reliable energy. Key components of these power grids are transformers. Transformers are traditionally filled with mineral oil, to serve as a coolant and dielectric insulator. LÄS MER

  4. 18. ECC-D4 Electostatic Oil Cleaner Design for Heavy-Duty Gas Turbine Applications

    Master-uppsats, Mekanisk värmeteori och strömningslära

    Författare :Murat Gorur; [2010]
    Nyckelord :Energy System; Electrostatic Cleaner; Gas Turbines; Electrostatic Field; Turbine Oil; Oil Clenaer;

    Sammanfattning : The turbine technology improvements from 1980 onwards have considerably increased mechanical and thermal stresses on turbine oils which, cause oil oxidation and thereby turbine oil degradation (Livingstone et al., 2007; Sasaki & Uchiyama, 2002). LÄS MER

  5. 19. Study of factors influcencing the quality and yield of biodiesel produced by transesterification of vegetable oils

    Magister-uppsats, Akademin för teknik och miljö

    Författare :Zaloa Ares Gondra; [2009]
    Nyckelord :Transesterification; vegetable oils; biodiesel;

    Sammanfattning : Biofuels are a developing kind of fuel whose origin is biomass. Among them, many different kind of fuels can be found: bioethanol, biobutanol, biodiesel, vegetable oils, biomethanol, pyrolysis oils, biogas, and biohydrogen. LÄS MER

  7. 20. Transformation of an environmental friendly hydraulic oil in soil using gas chromatography and FTIR as tools for identification of individual

    Magister-uppsats, Tema vatten i natur och samhälle

    Författare :Owolabi Lawal; [2007]
    Nyckelord :Transformation of an environmental friendly hydraulic oil in soil using gas chromatography and FTIR as tools for identification of individual;

    Sammanfattning : Production and use of hydraulic ester oil is on the increase worldwide. This becomes a substitute to mineral based hydraulic oil and has drawn more concern because of its more friendly environmental effects. LÄS MER