Sökning: "NOx reduction"

Visar resultat 1 - 5 av 70 uppsatser innehållade orden NOx reduction.

  1. 1. Exhaust system for hydrogen fuelled combustion engines: effect of high-water content on the SCR vanadium catalyst

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

    Författare :Cecilia Zambelli; [2023]
    Nyckelord :;

    Sammanfattning : Transportation represents a key secot in the journey towards a greener future, and alternative solutions are needed to meet the decarbonaisation need. Hydrogen internal combustion engines could represent a solution in the short-term, allowing for emission reduction with limited modification to the already existing traditional combustion engines. LÄS MER

  3. 2. Reducering av dioxiner vid samförbränning

    Master-uppsats, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Simon Strand; [2023]
    Nyckelord :förbränning; samförbränning; dioxiner; NOx; kväveoxider;

    Sammanfattning : Under en rutinmätning av emissioner 2019 överskred SCA Munksund AB gränsvärdetför dioxiner vid samförbränning. Som en direkt åtgärd minskades andelen avfallsklassatbränsle i bränsleblandningen. LÄS MER

  4. 3. Model Predictive Urea Dosing Control Strategy for Heavy-Duty Diesel Vehicles

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Mathias Schmekel; [2023]
    Nyckelord :Model predictive control; Selective catalytic reduction; Nitrogen oxides; Modell-prediktiv reglering; Selektiv katalytisk reduktion; Kväveoxider;

    Sammanfattning : Stricter requirements on the reduction of Nitrogen Oxides (NOx) in the emissions of heavy-duty diesel vehicles drives development for more efficient aftertreatment systems. An ammonia covered catalyst is one of the most successful technologies in reducing NOx by converting it into the harmless byproducts water and nitrogen. LÄS MER

  5. 4. Urban Planning for Better Air Quality : A case study of the Low-Traffic Neighbourhoods in London

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Greta Gustafsson; [2022]
    Nyckelord :Low-Traffic Neighbourhoods; London; Green Infrastructure; Urban Planning; Air Pollution;

    Sammanfattning : Air pollution affects the environment negatively, boosts climate change, and is the cause of millions of deaths per year, first and foremost affecting the people living in urban areas. Since the early 20th century, many cities have been planned around cars, which are the main contributors to the bad air quality. LÄS MER

  7. 5. MEASURING ECO-EFFICIENCY OF PRODUCTION IN OECD MEMBER COUNTRIES : A STOCHASTIC FRONTIER ANALYSIS

    Master-uppsats, Umeå universitet/Nationalekonomi

    Författare :Mahmoud Seif Mohammed; [2022]
    Nyckelord :;

    Sammanfattning : This paper analyzed the eco-efficiency of 27 OECD member countries by using output-oriented Stochastic Frontier Analysis (SFA) model. In the set-up of the model, Gross Domestic Product (GDP) was used as a good output whereas Carbon dioxide (CO2), Sulphur dioxide (SO2) and Nitrogen oxide (NOx) emissions were used as bad outputs. LÄS MER