Sökning: "ammoniak"

Visar resultat 11 - 15 av 133 uppsatser innehållade ordet ammoniak.

  1. 11. 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

  3. 12. Effects of Immiscible Compressor Oil in a Flooded PSHE Evaporator : A Visual Study Approach

    Master-uppsats, KTH/Energiteknik

    Författare :Joel Blomfelt; [2022]
    Nyckelord :;

    Sammanfattning : This paper deals with heat transfer in plate evaporators, with a focus on the effects caused by carried-over compressor oil ending up in the heat exchanger. A common standpoint in literature regarding the effect of immiscible oil contamination, in for example an ammonia PHE evaporator, is that the oil can accumulate as a layer on the plate surface causing an additional thermal conduction resistance. LÄS MER

  4. 13. Grön ammoniak i Norra Sverige : Konceptstudie kring förutsättningar för grön ammoniakproduktion i Norra Sverige

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

    Författare :Fredrik Hägglund; [2022]
    Nyckelord :Power-to-X; Vätgas; Ammoniak; Kvävgas; PEM; HB-process; CAPEX; OPEX;

    Sammanfattning : Europeiska Unionen presenterade den 8 juni 2020 sin vätgasstrategi i syfte för att minska koldioxidutsläppen. Det unionen vill uppnå med sin vätgasstrategi är att uttnytja konceptet Power-to-X där elektricitet omvandlas till energi. Om elektricitetkällan kommer från förnyelsebar energi kommer grön vätgas produceras. LÄS MER

  5. 14. Performance Analysis of CO2 Heat Pumps in Different Applications

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

    Författare :Jaykumar Thanggavelu; [2022]
    Nyckelord :CO2 Heat pump; COP; District heating; commercial buildings; residential buildings; field measurement data; Propane; Ammonia; R-134a; CO2 Värmepump; COP; Fjärrvärme; kommersiella byggnader; bostadshus; fältmätningsdata; Propan; Ammoniak; R-134a;

    Sammanfattning : This study focuses on researching the performance of CO2 heat pumps in different real-time applications and in some studies, it compares the performance to synthetic and other natural refrigerants based on heat pump data provided from buildings. The research on the performance of the CO2 heat pump is performed based on Sweden's climatic conditions. LÄS MER

  7. 15. Performance Evaluation of a bench-scale Thermochemical Storage System

    Master-uppsats, KTH/Energiteknik

    Författare :Harish Balaji Seetharaman; [2022]
    Nyckelord :Thermal energy storage TES ; Thermochemical heat storage TCS ; SrCl2-NH3; Absorption; Desorption; Monoammine; Octaammine; Performance evaluation.; Termisk energilagring TES ; Termokemisk energilagring TCS ; SrCl2-NH3; Absorption; Desorption; Monoammin; Oktaammin; Utvärdering av prestanda.;

    Sammanfattning : This thesis is part of a joint thermochemical heat storage (TCS) research project named Neutrons for Heat Storage (NHS), involving three Nordic research institutes. The project isfunded by Nordforsk and KTH Royal Institute of Technology for the project partner KTH. LÄS MER