Search for dissertations about: "Wujun Wang"

Found 4 swedish dissertations containing the words Wujun Wang.

  2. 1. Development of an Impinging Receiver for Solar Dish-Brayton Systems

    Author : Wujun Wang; Björn Laumert; Torsten Fransson; Torsten Strand; Uwe Gampe; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Concentrating solar power; Impinging receiver; Inverse design method; Conjugate heat transfer; High flux solar simulator; Energiteknik; Energy Technology;

    Abstract : A new receiver concept utilizing impinging jet cooling technology has been developed for a small scale solar dish-Brayton system. In a typical impinging receiver design, the jet nozzles are distributed evenly around the cylindrical absorber wall above the solar peak flux region for managing the temperature at an acceptable level. READ MORE

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

    Author : Yanyan Liu; Andrew R. Martin; Wujun Wang; Shanwen Tao; KTH; []
    Keywords : 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.; Energy Technology; Energiteknik; Teknisk materialvetenskap; Materials Science and Engineering; Chemical Engineering; Kemiteknik;

    Abstract : 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. READ MORE

  5. 3. Development of a Novel Gas Turbine Simulator for Hybrid Solar-Brayton Systems

    Author : Tianyao Pan; Björn Laumert; Wujun Wang; Konstantinos Kyprianidis; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gas turbine simulator; concentrating solar power; hybrid solar-Brayton system; pressure controller; choked nozzle; Programmable logic controller; proportional solenoid valve.; Gasturbinsimulator; koncentrerad solenergi; hybrid solenergi-Brayton-system; tryckregulator; strypt munstycke; programmerbar logikkontroller; proportionell magnetventil.; Energiteknik; Energy Technology;

    Abstract : Hybrid solar-Brayton systems utilize both solar thermal energy and supplementary renewable fuels to provide controllable and dispatchable power output, which renders them a promising way to meet the growing energy demand and reduce the carbon footprints. However, existing testing facilities for key components in such hybrid systems often fail to accomplish the testing requirements, hence impeding the improvement of the renewable energy share and the overall efficiency. READ MORE

  6. 4. Renewable Heat on Demand : High-temperature thermal energy storage: a comprehensive study from material investigation to system analysis via innovative component design

    Author : Silvia Trevisan; Björn Laumert; Rafael Guédez; Wujun Wang; Kurt Engelbrecht; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energiteknik; Energy Technology;

    Abstract : High-temperature thermal energy storage could enable widespread exploitation of renewable energy sources, providing the required energy flexibility. Technology and component development is needed to enhance the storage thermo-dynamic performance, and identify key design features. READ MORE