Sökning: "thermal power"

Visar resultat 51 - 55 av 695 avhandlingar innehållade orden thermal power.

  1. 51. Modern Thermal Power Plants - Aspects on Modelling and Evaluation

    Författare :Klas Jonshagen; Kraftverksteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; T-Q diagram; Combined cycle; heat- and mass-balance modelling; carbon capture; CO2;

    Sammanfattning : The European Union (EU) has laid down very clear objectives for the reduction of greenhouse gases in the hope that it will prevent or mitigate climate change. Political incentives are used to make the power industry adopt changes in order to reach these EU targets. LÄS MER

  3. 52. Thermal Characterization and Modelling in Microsystem Packaging Applications

    Författare :Elisabeth Nyström; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbon nanotubes; Thermal management; Transient Hot Wire; Composite; Microchannels; Anisotropic Conductive Adhesive;

    Sammanfattning : As the electronics circuits grow denser and the power consumption per area unit is increasing, new more efficient technologies for heat removal is necessary. Heat fluxes from the integrated circuit, IC, in the order of 100W/cm2 are not rare. LÄS MER

  4. 53. The impact of wind power variability on the least-cost dispatch of units in the electricity generation system

    Författare :Lisa Göransson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wind power; intermittency; wind-thermal system; variability; cycling costs; electricity generation system; dispatch modeling; variation management;

    Sammanfattning : This thesis investigates the dynamics of electricity generation systems that involve high levels of wind power. Methods to account for wind power variability in electricity-dispatch models are explored, and the impact of wind power variability on the optimal output of the generation units, so as to meet the system load with the lowest possible cost (economic dispatch), is analyzed for several systems, for both regional and European cases. LÄS MER

  5. 54. High power bipolar junction transistors in silicon carbide

    Författare :Hyung-Seok Lee; Carl-Mikael Zetterling; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Silicon Carbide SiC ; power device; biplar junction transistor; TiW; ohmic contact; current gain; Electronics; Elektronik;

    Sammanfattning : As a power device material, SiC has gained remarkable attention to its high thermal conductivity and high breakdown electric field. SiC bipolar junction transistors (BJTs) are interesting for applications as power switch for 600 V-1200 V applications. LÄS MER

  7. 55. On the Analysis and Fault-Diagnosis Tools for Small-Scale Heat and Power Plants

    Författare :Jaime Arriagada; Kraftverksteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal engineering; applied thermodynamics; Termisk teknik; termodynamik; genetic algorithms; neural networks; fault diagnosis; maintenance; availability; reliability; energy analysis; combined heat and power; Methods and tools; small scale;

    Sammanfattning : The deregulation of the electricity market drives utilities and independent power producers to operate heat and power plants as profit centers. In order to keep the economic margins on the credit side, the preferred measures have been to improve the electrical efficiency through changes in the hardware and boost the overall efficiency through e.g. LÄS MER