Sökning: "central heating"

Visar resultat 1 - 5 av 135 uppsatser innehållade orden central heating.

  1. 1. Sandvärmesystemet : Det första uppvärmningssystemet i personvagnar

    Kandidat-uppsats, Uppsala universitet/Kulturvård

    Författare :Fredrik Åkerblom; [2024]
    Nyckelord :Sandvärme;

    Sammanfattning : 1856 började Statens Järnvägar med gods- och persontrafik och någon gång under början av 1860-talet så uppstod önskemålet att ha uppvärmning i förstaklasskupéer under de kalla vintermånaderna. Därmed så infördes den första uppvärmningen i personvagnar. LÄS MER

  3. 2. Uranium nitride synthesis by gas/gas reaction of UF6 and NH3

    Master-uppsats, KTH/Fysik

    Författare :Serena Ambrosino; [2024]
    Nyckelord :Uranium nitride; synthesis; ammonolysis; uranium hexafluoride; uranium tetrafluoride; ammonia; X-ray diffraction; microscopy; Urannitrid; syntes; ammonolys; uranhexafluorid; urantetrafluorid; ammoniak; röntgendiffraktion; mikroskopi;

    Sammanfattning : This thesis project aims to develop an innovative technique for the production of high-purity uranium nitride (UN) through the ammonolysis of fluorides. The desired objective is to perform a controlled gas/gas reaction between uranium hexafluoride (UF6) and ammonia (NH3) at 800°C. LÄS MER

  4. 3. Integrating Waste Heat from Hydrogen Production Into District Heating

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Fawzi Kayali; [2023]
    Nyckelord :Hydrogen; Electrolysis; Waste Heat Recovery; Combined Heat and Power Plant; District Heating; Simulation; Sustainable Heating Systems; Technology and Engineering;

    Sammanfattning : The aim of this research is to explore the feasibility of the integration of waste heat from electrolyzers within a Combined Heat and Power (CHP) plant and district heating (DH) network and suggest a practical setup for integration. With the escalating emphasis on the development of green hydrogen through electrolysis powered by renewable energy, a substantial amount of waste heat is generated, typically left unused. LÄS MER

  5. 4. Methodology for Designing Bespoke Air Handling Units

    Master-uppsats, KTH/Energiteknik

    Författare :Alexandra Malysheva; [2023]
    Nyckelord :bespoke air handling unit; evaporative cooling system; two-stage crossflow heat exchanger; 3D-modeling; platsbyggt luftbehandlingsaggregat; evaporativt kylsystem; tvåstegs motströmsvärmeväxlare; 3D-modeling;

    Sammanfattning : This master's thesis explores the role of bespoke air handling units in enhancing energy efficiency in existing buildings. The context for the study is set against the backdrop of global initiatives, including the United Nations' Sustainable Development Goals, specifically Goal 7, which emphasizes the need to improve energy efficiency to combat climate change. LÄS MER

  7. 5. Effects of Energy Performance Improving Measures on a 1990's Brick House in Southern Czech Republic : Computer Simulations using IDA-ICE

    Magister-uppsats, Högskolan i Gävle/Energisystem och byggnadsteknik

    Författare :Vaclav Panek; [2023]
    Nyckelord :Final energy demand; Primary energy demand; Energy performance; Refurbishment; Single-family house; Space heating;

    Sammanfattning : The residential sector was responsible for 25% of the Final Energy Demand (FED) in the European Union in 2015. Countries in Central and Eastern Europe such as the Czech Republic are particularly concerned with ensuring security of supply at the lowest possible cost in recent years. LÄS MER