Avancerad sökning

Visar resultat 1 - 5 av 21 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Investigation of fuel and water injection in gas turbine combustion : Evaluate the methodologies available in Star CCM+ for modeling of water injection in simplified combustor using liquid and gas fuels

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Sanger Shinwari; [2023]
    Nyckelord :Diesel and Methane fuel combustion; FGM combustion model; Lagrangian multiphase modelling; Inert Stream; Water injection; STAR CCM ;

    Sammanfattning : The negative impact of gas turbine emissions on the environment and human health is a growing concern. Recent studies suggest injecting water into the combustion process effectively reduces emissions and increases power output. However, this approach presents new challenges that need to be thoroughly investigated. LÄS MER

  3. 2. How the Choice of Primary Treatment Affects the Biogas Potential of Primary Sludge

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Fanny Blom; [2022]
    Nyckelord :wastewater treatment; primary treatment; biogas potential; primary settling treatment; rotating belt filter; chemically enhanced primary treatment; environmental engineering; water resources engineering; Technology and Engineering;

    Sammanfattning : The global heating has resulted in rising temperatures and more extreme weather conditions around the world. In combination with increasing energy demands, this has led to an increasing demand of renewable energy. One option is utilizing the wastewater to produce biogas. There-fore, wastewater can be seen as a resource rather than waste. LÄS MER

  4. 3. Strategies for regional deployment of hydrogen infrastructure : The case of North Rhine-Westphalia, Germany

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Roberto Di Molfetta; [2022]
    Nyckelord :Hydrogen; Infrastructure rollout; Supply chain pathways; Mobility; Hydrogen buses.;

    Sammanfattning : In response to the growing urge towards decarbonisation, more and more initiatives have been set to reduce and/or compensate the level of CO2 (carbon dioxide) emitted by human activities, which is one of the main responsible of the incumbent threats of “global warming” and “climate change”. “Climate neutrality by 2050” has become a decisive topic for political agendas worldwide and, against that background, the hydrogen economy can play a significant role. LÄS MER

  5. 4. Alkaline wet oxidation of biorefinery lignin from wheat straw

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Maja Lindblad; [2021]
    Nyckelord :alkaline wet oxidation; lignin oxidation; wheat straw; chemical pretreatment; biorefinery lignin; anaerobic digestion; response surface-modelling; chemical engineering; Technology and Engineering;

    Sammanfattning : Climate change and depletion of fossil resources have generated a need for energy production based on renewable resources such as lignocellulosic biomass. Agricultural residues, like wheat straw, is lignocellulosic biomass that could contribute to the energy supply if it was used for biogas production. LÄS MER

  7. 5. Effekten av biokol på djupströbaserad biogasproduktion

    Kandidat-uppsats, Mittuniversitetet/Institutionen för ekoteknik- och hållbart byggande

    Författare :Ellen Robertson; [2021]
    Nyckelord :cirkulär ekonomi; energioptimering; energiproduktion; förnybar energi; nedbrytningsgrad; utrötningsgrad; specifik metanpotential;

    Sammanfattning : Vi står idag inför en ökad global population och klimatpåfrestning vilket har skapat behov av ett mer resurseffektivt samhälle som kräver mer utgående produkt per ingående råmaterial. Biogas anses vara en viktig del i omställningen till ett hållbart samhälle då det följer en cirkulär ekonomi som inte bidrar med nettoutsläpp av koldioxid. LÄS MER