Sökning: "surplus power"

Visar resultat 16 - 20 av 28 avhandlingar innehållade orden surplus power.

  1. 16. Mitigating climate change - The role of developing countries

    Författare :Tobias A Persson; Chalmers tekniska högskola; []
    Nyckelord :;

    Sammanfattning : The objective of the UN Framework Convention on Climate Change is to stabilize greenhouse gases in the atmosphere at a level that prevents dangerous anthropogenic interference with the climate system. It is still politically and scientifically uncertain at which level greenhouse gases must be stabilized to achieve this objective. LÄS MER

  3. 17. Nonlinear Model-based Control of Automotive Powertrains

    Författare :Jonas Fredriksson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; stability; diesel engine control; nonlinear control; gearshifting; air-to-fuel ratio control; drive- line oscillations; backstepping; powertrain modeling; powertrain control;

    Sammanfattning : In recent years the focus of powertrain control has shifted perspective from control of the individual powertrain components to control of the complete powertrain, so-called integrated powertrain control. The idea presented in this thesis is to view the powertrain as one single control object and to used the engine as a torque actuator to the rest of the driveline. LÄS MER

  4. 18. Rational bioenergy utilisation in energy systems and impacts on CO2emissions

    Författare :Bertil Wahlund; KTH; []
    Nyckelord :CO2 reduction; energy system; biofuel; CHP; refining; fuel pellets; ethanol; methanol; DME; fuel substitution; sewage water; nitrification;

    Sammanfattning : The increased concentration of greenhouse gases in theatmosphere, in particular CO2, is changing the Earth’s climate. Accordingto the Kyoto protocol, where the international community agreedon binding emission targets, developed countries are committedto reduce their greenhouse gas emissions. LÄS MER

  5. 19. Benefits of Integrated Upgrading of Biofuels in Biorefineries - Systems Analysis

    Författare :Eva Ingeborg Elisabeth Andersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydrogen; systems analysis; biorefinery; process integration; CO2 emissions; biofuels;

    Sammanfattning : As a result of increasing concerns about climate change, there is considerable current interest in increasing use of CO2-neutral biofuel in the energy system. Increased use of biomass fuel requires that it be upgraded in order to facilitate transportation and distribution to end-users. LÄS MER

  7. 20. Precipitation and separation of lignin from kraft black liquor

    Författare :Fredrik Öhman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pressing; filtration; washing; lignin; separation; precipitation; black liquor; extraction;

    Sammanfattning : The separation of lignin from black liquor is an attractive option to consider for pulp mills. In modern pulp mills, lignin extraction offers the opportunity of withdrawing an energy surplus in the form of a solid biofuel. LÄS MER