Sökning: "solar heating"

Visar resultat 21 - 25 av 130 avhandlingar innehållade orden solar heating.

  1. 21. COMBITEST : a new test method for thermal stores used in solar combisystems

    Författare :Chris Bales; Högskolan Dalarna; []
    Nyckelord :Test methods; thermal stores; standards; solar heating; parameter identification;

    Sammanfattning : .... LÄS MER

  3. 22. A multiwavelength approach to solar chromospheric heating : New insights from the millimeter continuum

    Författare :João Manuel da Silva Santos; Jaime de le Cruz Rodríguez; Jorrit Leenaarts; Petr Heinzel; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sun; chromosphere; radiative transfer; waves; reconnection; Astronomy; astronomi;

    Sammanfattning : The chromosphere is an intermediate layer of the Sun's atmosphere where radiative equilibrium breaks down. The standard chromospheric diagnostics such as the Mg II h and k and Ca II H and K spectral lines are formed under nonlocal thermodynamic equilibrium (NLTE) and they are only partially sensitive to the local conditions. LÄS MER

  4. 23. Constraining magnetic heating in the solar chromosphere

    Författare :Roberta Morosin; Jaime de la Cruz Rodríguez; Elena Khomenko; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sun; chromosphere; magnetic fields; spectropolarimetry; Astronomy; astronomi;

    Sammanfattning : The chromospheric and coronal heating problems remain one of the foremost open questions in solar and stellar physics: how are the outer layers of the Sun heated from a few thousand kelvin in the photosphere to the million-degree corona? Radiation alone is not capable of transporting the required energy to explain observations from the inner layers. Phenomena associated with the presence of magnetic fields could provide the missing energy. LÄS MER

  5. 24. Combined solar and pellet heating systems for single-family houses : How to achieve decreased electricity usage, increased system efficiency and increased solar gains

    Författare :Tomas Persson; Per Lundqvist; Simon Furbo; Högskolan Dalarna; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pellet; pelleteldning; kamin; panna; solvärmesystem; varmvattenberedning; systemutformning; småhus; elbesparing; verkningsgrad; emissioner; rökgasförluster; skorstensförlust; diskmaskin; tvättmaskin; Thermal energy engineering;

    Sammanfattning : In Sweden, there are about 0.5 million single-family houses that are heated by electricity alone, and rising electricity costs force the conversion to other heating sources such as heat pumps and wood pellet heating systems. Pellet heating systems for single-family houses are currently a strongly growing market. LÄS MER

  7. 25. Combitest. A New Test method for Thermal Stores Used in Solar Combisystems

    Författare :Chris Bales; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; solar heating; parameter idenfification; standards; thermal stores; Test methods;

    Sammanfattning : This work deals with the testing of water based thermal buffer stores used for low temperature applications (.... LÄS MER