Search for dissertations about: "Björn Laumert"

Showing result 1 - 5 of 17 swedish dissertations containing the words Björn Laumert.

  2. 1. Numerical Investigation of Aerodynamic Blade Excitation Mechanisms in Transonic Turbine Stages

    Author : Björn Laumert; KTH; []
    Keywords : Transonic Turbines; CFD; Forced Response; Unsteady Aerodynamics;

    Abstract : With the present drive in turbomachine engine developmenttowards thinner and lighter bladings, closer spaced blade rowsand higher aerodynamic loads per blade row and blade, advanceddesign criteria and accurate prediction methods for vibrationalproblems such as forced response become increasingly importantin order to be able to address and avoid fatigue failures ofthe machine early in the design process. The present worksupports both the search for applicable design criteria and thedevelopment of advanced prediction methods for forced responsein transonic turbine stages. READ MORE

  4. 2. Solar receiver development for gas-turbine based solar dish systems

    Author : Lukas Aichmayer; Björn Laumert; Konstantinos Kyprianidis; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Concentrating solar power; volumetric solar receiver; development; experimental evaluation; validation; Koncentrerad solkraft; volumetrisk solmottagare; utveckling; experimentell utvärdering; validering; Energy Technology; Energiteknik;

    Abstract : Small-scale concentrating solar power plants such as micro gas-turbine based solar dish systems have the potential to harness solar energy in an effective way and supply electricity to customers in remote areas. In such systems, the solar receiver transfers the power of concentrated solar radiation to the working fluid of the power conversion cycle. READ MORE

  5. 3. A co-simulation based framework for the analysis of integrated urban energy systems : Lessons from a Swedish case study

    Author : Monica Arnaudo; Björn Laumert; Monika Topel; Louise Ödlund; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Technology; Energiteknik;

    Abstract : As major responsible for CO2 emissions, the energy sector is urgently called to take action against climatechange. The integration of renewable energy resources is a solution that, however, comes with a challenge.In fact, renewables are often variable, unpredictable and distributed. READ MORE

  6. 4. Exploiting the Synergies from Coupled Electricity and Heat Distribution Networks : Modelling, simulation and optimization based on an extended energy hub approach

    Author : Getnet Tadesse Ayele; Björn Laumert; Joachim Claesson; Bruno Lacarrière; Pierrick Haurant; Filip Johnsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; District heating networks; Electricity distribution networks; Extended energy hub approach; Integrated load flow study; Integrated optimal power flow; Multi-carrier energy networks; Multi-energy system; Optimal placement; Thermal storage.; Hub énergétique étendu; Flux de charges; Flux de puissances intégrées optimaux; Réseaux énergétiques multi-vecteurs; Système multi-énergies; Placement optimal.; Fjärrvärmenät; Elektricitetsdistributionsnät; Utökad strategi för energihub; Integrerad belastningsstudie; Integrerat optimalt effektflöde; Energinät med flera bärare; Multi-energisystem; Optimal placering; Termisk lagring.; Energy Technology; Energiteknik;

    Abstract : Recent literature shows that there is a significant potential of decarbonisation and efficiency improvement that can be achieved through the synergy from multi-energy systems (MESs). Coupling technologies, such as co-generation plants, heat pumps and thermal storages are widely recommended as means of unlocking additional flexibility and increasing the penetration of renewables in the heating and electricity sectors. READ MORE

  7. 5. Cavity Purge Flows in High Pressure Turbines

    Author : Johan Dahlqvist; Björn Laumert; Jens Fridh; Paul Beard; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turbomachinery; axial turbine; cavity purge; purge flow; wheelspace; rim seal; spanwise transport; radial transport; effectiveness; cooling; efficiency; strömningsmaskiner; axialturbin; kavitetsrensningsflöde; kavitetsflöde; tätkant; spännviddsvis transport; radiell transport; effektivitet; kylning; verkningsgrad; Energy Technology; Energiteknik;

    Abstract : Turbomachinery forms the principal prime mover in the energy and aviation industries. Due to its size, improvements to this fleet of machines have the potential of significant impact on global emissions. READ MORE