Sökning: "Solar collector"

Visar resultat 16 - 20 av 29 avhandlingar innehållade orden Solar collector.

  1. 16. Load Adapted Solar Thermal Combisystems - Optical Analysis and Systems Optimization

    Författare :Svante Nordlander; Högskolan Dalarna; []
    Nyckelord :Solar Combisystems Concentrating Collector Optimization Incidence Angle Optical Efficiency Simulation TRNSYS Stagnation;

    Sammanfattning : In a northern European climate a typical solar combisystem for a single family house normally saves between 10 and 30 % of the auxiliary energy needed for space heating and domestic water heating. It is considered uneconomical to dimension systems for higher energy savings. Overheating problems may also occur. LÄS MER

  3. 17. Solar-driven refrigeration systems with focus on the ejector cycle

    Författare :Wimolsiri Pridasawas; Per Lundqvist; Hans-Martin Henning; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar Cooling; Solar-Driven Refrigeration System; Ejector; Ejector Refrigeration Cycle; Exergy Analysis; Dynamic Analysis; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : Interest in utilizing solar-driven refrigeration systems for air-conditioning or refrigeration purposes has grown continuously. Solar cooling is com-prised of many attractive features and is one path towards a more sus-tainable energy system. LÄS MER

  4. 18. Low temperature deicing of road infrastructure using renewable energy

    Författare :Josef Johnsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; borehole thermal energy storage; renewable energy; BTES; numerical simulations; Pavement solar collector; Hydronic heated pavements;

    Sammanfattning : Winter road maintenance is costly but it is inevitable since it is necessary to keep roads accessible and safe during winter. Current winter road maintenance methods use annually 600 000 tons of salt, in the Nordic countries. The salt ends up in the environment along the roads and results in environmental challenges. LÄS MER

  5. 19. Optical Characterization of Solar Collectors form Outdoor Measurements

    Författare :Anna Helgesson; Avdelningen för Energi och byggnadsdesign; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Due to high installation costs and relatively low output, the active use of solar energy is limited. The output from a collector can be improved e.g. by using a selective absorber, AR-treated cover glass or transparent insulation. LÄS MER

  7. 20. Optical design of stationary solar concentrators for high latitudes

    Författare :Mats Rönnelid; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; Solid State Physics; fasta tillståndets fysik;

    Sammanfattning : The optical design of stationary solar concentrators for high latitudes has beenstudied. Irradiation distribution diagrams, which are tools for the design ofstationary linear concentrators, have been developed. LÄS MER