Sökning: "energi transition"

Visar resultat 1 - 5 av 110 avhandlingar innehållade orden energi transition.

  1. 1. Exploiting cross-level linkages to steer the bioenergy transition

    Författare :Francis X Johnson; Semida Silveira; Geert Verbong; KTH; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; energy transition; modern bioenergy; traditional biomass; cross-level linkages; institutional design; regional development; alternative fuels; Energy Technology; Energiteknik;

    Sammanfattning : This thesis develops the notion of the bioenergy transition as the long-term transformation of biomass from a local resource into a global commodity. An historical assessment is combined with interdisciplinary analysis that focuses especially on liquid biofuels and highlights the environmentally innovative case of bioethanol. LÄS MER

  3. 2. Production Planning of CHP plants in transition towards energy systems with high share of renewables

    Författare :Mahsa Daraei; Eva Thorin; Pietro Elia Campana; Anders Avelin; Louise Ödlund; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : The global energy system is undergoing a transformative change towards renewable energies. The share of Renewable Energy Sources (RES) and bioenergy in the world’s primary energy use has increased in the recent years. LÄS MER

  4. 3. Transition delay in boundary-layer flows via reactive control

    Författare :Nicolò Fabbiane; Dan S. Henningson; Shervin Bagheri; Denis Sipp; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flow control; drag reduction; net energy saving; adaptive control; model-based control; optimal control; flat-plate boundary layer; laminar-to- turbulent transition; plasma actuator; direct numerical simulation; in-flight experiments; strömningsstyrning; friktionsreduktion; netto energibesparing; adaptiv styrning; modellbaserad styrning; optimal kontroll; gränsskikt öve en plan platta; laminärt till turbulent omslag; plasma aktuator; DNS; flyg prov; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : Transition delay in boundary-layer flows is achieved via reactive control of flow instabilities, i.e. Tollmien-Schlichting (TS) waves. Adaptive and model-based control techniques are investigated by means of direct numerical simulations (DNS) and experiments. LÄS MER

  5. 4. A Rational Exergy Management Model to Curb CO2 Emissions in the Exergy-Aware Built Environments of the Future

    Författare :Siir Kilkis; Folke Björk; Bahram Moshfegh; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Exergy; CO2 emissions; built environment; buildings; energy system; scenario-based analysis; mitigation strategies; net-zero; LEED; energy transition; transition management; SRA - Energy; SRA - Energi;

    Sammanfattning : This thesis puts forth the means of a strategic approach to address a persistent problem in the energy system and in this way, to transition the built environment to a future state that is more exergy-aware to curb CO2 emissions. Such a vision is made possible by the six-fold contributions of the research work: I) An analytical model is developed, which for the first time, formulates the CO2 emissions that are compounded in the energy system as a function of the systematic failures to match the supply and demand of exergy. LÄS MER

  7. 5. Opposition and adjustment to industrial ‘greening’ : the Swedish forest industry’s (re)actions regarding energy transition – 1989-2009

    Författare :Mikael Ottosson; Jonas Anshelm; Claes-Fredrik Helgesson; Hans Andersson; Susse Georg; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Forest industry; energy; electricity; forests; industrial greening; industrial change; actor network theory; sociology of industry; strategic management; science and technology studies; Skogsindustri; energi; elektricitet; skog; industriell miljöanpassning; industriell förändring; aktörsnätverksteori; branschsociologi; strategiforskning; teknik- och vetenskapsstudier; Technology and social change; Teknik och social förändring;

    Sammanfattning : This thesis analyses how the Swedish forest industry has (re)acted regarding the energy transition and, in particular, regarding the reconstruction of the electricity and forest resources in Sweden during the 1989–2009 period. The thesis consists of four papers that analyse how the Swedish forest industry by means of energy management practices at individual pulp and/or paper mills, in corporate strategies performed by CEOs and boards of directors, and via its industry association, has dealt with mounting political and public demands for the industry to become ‘greener’. LÄS MER