Sökning: "Siloxane"

Hittade 4 uppsatser innehållade ordet Siloxane.

  1. 1. Multifunctional ice and snow repellent coatings for photovoltaic modules

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Solcellsteknik

    Författare :Gunnar Sandkvist; [2023]
    Nyckelord :sol-gel; superhydrophobic; dip-coating; anti-reflective; silica;

    Sammanfattning : Implementation of solar power by photovoltaic modules in cold climates, such as northern Sweden, implies several challenges. Ice and snow coverage not only leads to reduction in energy production due to shading, but it also puts equipment at risk from additional weight. LÄS MER

  3. 2. Assessing the effectiveness of siloxane-based flame retardants

    Master-uppsats, KTH/Kemiteknik

    Författare :Josefin Eklund Wallin; [2022]
    Nyckelord :Polyhderal oligomeric silsesquioxane; POSS; PVC; TGA DSC; DSC; thermal properties;

    Sammanfattning : Polyedrisk oligomer silsesquioxane (POSS) är molekyler som har en inorganisk ryggrad med organiska grupper fa ̈sta utan på. Själva kåren har en bur liknande form och har en hög termisk stabilitet tack vare kisel (Si) och syre (O) som den består av. LÄS MER

  4. 3. Comparative Study of Different Organic Rankine Cycle Models: Simulations and Thermo-Economic Analysis for a Gas Engine Waste Heat Recovery Application

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Tihomir Rusev; [2015]
    Nyckelord :ORC; Waste Heat Recovery; Aspen Plus; Cascaded Cycle; Thermo-Economic; ORC Simulations; ORC Models; ORC Model Comparisons; Gas Engine Waste Heat Recovery; Hot Exhaust Gases; Multiple Waste Heat Sources; ORC Waste Heat Power Generation; Heat and Power; Combined Cycle; Siloxane;

    Sammanfattning : Increasing the efficiency of conventional power plants is a crucial aspect in the quest of reducing the energy consumption of the world and to having sustainable energy systems in the future. Thus, within the scope of this thesis the possible efficiency improvements for the Wärtsilä 18V50DF model gas engine based combine power generation options are investigated by recovering waste heat of the engine via Organic Rankine cycle (ORC). LÄS MER

  5. 4. A comparative study on surface treatments in conservation of dry leather, with focus on silicone oil.

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Lena Ludwick; [2013-03-05]
    Nyckelord :Leather conservation; Klucel G; British Museum leather dressing; surface treatment; dry leather; silicone oil treatment; passivation polymers; silanol terminated polydimethyl siloxane; comparative study;

    Sammanfattning : In the museums, private collections and historical houses, there is a wealth of leather artifacts, in various need of conservation. The treatment options, however, are few, and all with their drawbacks. LÄS MER