Search for dissertations about: "kylning"

Showing result 1 - 5 of 46 swedish dissertations containing the word kylning.

  2. 1. Magnetic Refrigeration for Near Room-Temperature Applications

    Author : Behzad A Monfared; Björn Palm; Joachim Claesson; Andrew Rowe; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Magnetic Refrigeration; Magnetic; Cooling; Magnetocaloric; Life Cycle Assessment; Modeling; Simulation; Optimization; Regeneration; Active Magnetic Regeneration; Bonded Regenerator; Heat Switch; Thermal Diode; Peltier; Solid-State; Prototype; Magnetisk Kylteknik; Magnetisk; Kylning; Magnetokalorisk; Livscykela-nalys; Modellering; Simulering; Optimering; Regenerering; Aktiv Mag-netisk Regenerering; Bunden Regenerator; Värmebrytare; Termodiod; Peltier; Solid-State; Prototyp; Energy Technology; Energiteknik;

    Abstract : Refrigeration plays a crucial role in many different sectors and consumes about 17% of the electricity produced globally. This significant energy consumption implies large share of refrigeration in primary energy consumption and other environmental impacts. READ MORE

  4. 2. Combined Energy Solutions Applied to Dairy Farming in Bolivia and Latin America

    Author : Johnny Villarroel-Schneider; Andrew R. Martin; Anders Malmquist; Valentina Zaccaria; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polygeneration; productive sector; dairy farm; farming; biogas; energy efficiency; electricity; refrigeration; self-sufficiency; techno-economic; GHG emissions; Bolivia; Latin America; Polygeneration; produktiv sektor; mjölkgård; jordbruk; biogas; energieffektivitet; elektricitet; kylning; självförsörjning; teknisk-ekonomisk; växthusgasutsläpp; Bolivia; Latinamerika; Poligeneración; sector productivo; granja; ganadería; biogás; eficiencia energética; electricidad; refrigeración; autosuficiencia; tecno-económico; GEI; Bolivia; América Latina; Energiteknik; Energy Technology;

    Abstract : The transition towards a sustainable world requires immediate action on the part of individuals and communities. Developing countries find the task of incorporating climate change policies difficult for various reasons including the negative effects that the Covid-19 pandemic left behind on the economy. READ MORE

  5. 3. Experimental study of an intermittent ventilation system in high occupancy spaces

    Author : Alan Kabanshi; Patrik Sörqvist; Hans Wigö; Robert Ljung; Hazim Awbi; Högskolan i Gävle; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Intermittent airflow; Indoor air quality; Perceived air quality; Thermal sensation; thermal comfort; Air movement acceptability; Convective cooling; Cooling effect.; Intermittent luftflöde; Luftstrålar; Upplevd luftkvalitet; Termisk komfort; Acceptans av luftrörelser; Konvektiv kylning; Kyleffekt.; Hållbar stadsutveckling; Sustainable Urban Development;

    Abstract : Spaces with high occupancy density like classrooms are challenging to ventilate and use a lot of energy to maintain comfort. Usually, a compromise is made between low energy use and good Indoor Environmental Quality (IEQ), of which poor IEQ has consequences for occupants’ health, productivity and comfort. READ MORE

  6. 4. Steering sustainability transitions? Modular participatory backcasting for strategic planning in the heating and cooling sector

    Author : Kateryna Pereverza; Maria Malmström; Olga Kordas; David Lazarevic; Karel Mulder; Lars Coenen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sustainability transitions; strategic planning; participatory backcasting; scenarios; modularity; participatory modelling; transdisciplinarity; organisational changes; heating and cooling sector; Omställningsprocesser; strategisk planering; deltagande backcasting; modularitet; deltagandemodellering; tvärvetenskap; organisationsförändringar; uppvärmning och kylning; Industrial Ecology; Industriell ekologi;

    Abstract : Fostering sustainability transitions in the heating and cooling sector is a necessary and urgent issue. Steering mechanisms can enable coordination of actions by different actors towards common sustainability goals. READ MORE

  7. 5. Numerical Investigations on Debris Bed Coolability and Mitigation Measures in Nordic Boiling Water Reactors

    Author : Zheng Huang; Weimin Ma; Florian Fichot; KTH; []
    Keywords : Severe accident; Debris bed; Coolability; Quench; Oxidation; MEWA code; Coupled analysis; Svåra haverier; Grusbädd; Kylbarhet; Kylning; Oxidering; MEWA program; Kopplad analys; Physics; Fysik;

    Abstract : This thesis is aiming at coolability assessment of particulate debris beds formed in hypothetical severe accidents of Nordic boiling water reactors (BWRs) which may employ either lower drywell flooding or control rod guide tubes (CRGT) cooling as severe accident management strategies. For this purpose, quench and cooling limit (dryout) of debris beds after their formation from fuel coolant interactions were investigated by numerical simulations using the MEWA code. READ MORE