Sökning: "Energiteknik"

Visar resultat 1 - 5 av 742 avhandlingar innehållade ordet Energiteknik.

  1. 1. Solar heat pump systems for heating applications Analysis of system performance and possible solutions for improving system performance

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Stefano Poppi; KTH.; Högskolan Dalarna.; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energiteknik; Energy Technology; Solar heat pump systems; techno-economics; solar thermal; system improvements; cost-effectiveness; MacSheep; MacSheep;

    Sammanfattning : Solar heat pump systems (SHPs) are systems that combine solar energy and heat pumps. SHPs have been investigated for several decades and have been proven to increase the share of renewable energy and reduce electric energy demand in residential heating applications. LÄS MER

  3. 2. Numerical investigation of self-excited vibrations of a compressor cascade

    Detta är en avhandling från Stockholm : Energiteknik

    Författare :Moosa Muhammad; KTH.; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flutter; turbomachinery; compressor blade; CFD; stability; aerodynamic damping; stability parameter; modeshape; TECHNOLOGY Engineering mechanics Mechanical and thermal engineering Mechanical energy engineering; TEKNIKVETENSKAP Teknisk mekanik Mekanisk och termisk energiteknik Mekanisk energiteknik;

    Sammanfattning : .... LÄS MER

  4. 3. Integrating Heat Pumps into Smart Grids

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :David Fischer; KTH.; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energiteknik; Energy Technology;

    Sammanfattning : Transforming our energy system towards 100% renewable energy sources requires radical changes across all energy sectors. Heat pumps as efficient heat generation technology link the electricity and heat sector. From 2010 to 2015 between 750,000 and 800,000 heat pumps have been sold every year across Europe. LÄS MER

  5. 4. Application of Rare-Earth Doped Ceria and Natural Minerals for Solid Oxide Fuel Cells

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Yanyan Liu; KTH.; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Low-temperature solid oxide fuel cells; Doped ceria; Material characterizations; Electrochemical performances; Natural minerals; Lågtemperatur fastoxidbränsleceller; Dopade ceriumoxid; Materialkarakteriseringar; Elektrokemiska prestanda; Naturliga mineraler.; Energiteknik; Energy Technology; Materials Science and Engineering; Teknisk materialvetenskap; Chemical Engineering; Kemiteknik;

    Sammanfattning : Although solid oxide fuel cell (SOFC) technology exhibits considerable advantages as compared to other energy conversion devices, e.g. high efficiency, low emission and fuel flexibility, its high operating temperature leads to rapid component degradation and has thus hampered commercialization. LÄS MER

  7. 5. Deep generated methane in the global methane budget

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Elena Mukhina; KTH.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Energiteknik; Energy Technology;

    Sammanfattning : Methane is a significant part of the global carbon cycle. The distribution of methane above and below the Earth’s surface suggests that atmospheric methane might be related to methane originating from the deep mantle. LÄS MER