Institution
Vattenfall
Company•Stockholm, Sweden•
About: Vattenfall is a company organization based out in Stockholm, Sweden. It is known for research contribution in the topics: Wind power & Combustion. The organization has 685 authors who have published 857 publications receiving 18912 citations. The organization is also known as: Vattenfall AB & Kungliga Vattenfallstyrelsen.
Topics: Wind power, Combustion, Flue gas, Electric power system, Power station
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this article, a power plant simulation tool was used to optimize the overall thermal efficiency resulting from the introduction of an MEA-based CO2 capture process into state of the art power plant.
10 citations
••
TL;DR: In this paper, the authors presented an analysis of icing measurements from a cold climate site in Canada, which provided a set of inlet boundary conditions suitable for the modelling of icing events.
9 citations
••
TL;DR: In this paper, laser Doppler anemometry (LDA) measurements within the runner blade channels and at the runner outlet of a Kaplan turbine model were investigated at six operating points located on two propeller curves of the turbine to study the flow condition during on-cam and off-cam operations.
Abstract: This paper presents laser Doppler anemometry (LDA) measurements within the runner blade channels and at the runner outlet of a Kaplan turbine model. The model was investigated at six operating points located on two propeller curves of the turbine to study the flow condition during on-cam and off-cam operations. Main and secondary flows within and after the runner were analyzed, and the effects of the hub and tip clearances on the velocity fields within and after the runner were evaluated. Operation of the turbine at flow rates that are lower than the designed rate for the corresponding propeller curve resulted in vortex breakdown and the formation of a rotating vortex rope (RVR). The RVR formation produced an asymmetrical velocity distribution within and after the runner. The results demonstrated the occurrence of an oscillating flow with the same frequency as the vortex rope within the blade channels located upstream of the RVR. This results in an asymmetric flow through the runner and oscillating forces on the runner blades. The measured velocities indicated that the geometrical asymmetries in the runner manufacturing process resulted in various flow asymmetries at the measured sections. The asymmetries were up to 3% within the runner and 7% at the runner outlet.
9 citations
••
TL;DR: In this article, the impact of large scale wind power generation in the European ENTSO-E system on the North-South Inter-Area Oscillation mode was investigated by gradually replacing the power generated by the synchronous generators in the system either Full Size Converter or Doubly Fed Induction Generator (DFIG) wind turbines.
9 citations
••
TL;DR: In Sweden, it is possible to utilize biomass for heat and power production and combined heat-and-power production is an interesting application as discussed by the authors, however, in the short term there is little need for new plants, but preparation for future needs goes on.
9 citations
Authors
Showing all 687 results
Name | H-index | Papers | Citations |
---|---|---|---|
Math Bollen | 59 | 519 | 17496 |
Björn Karlsson | 39 | 230 | 4638 |
Johan Westin | 29 | 78 | 5391 |
Lion Hirth | 29 | 76 | 4941 |
Anders Wörman | 28 | 109 | 3145 |
Ausilio Bauen | 28 | 52 | 3664 |
Jesper Petersson | 24 | 63 | 4359 |
Bernd Meyer | 24 | 208 | 2059 |
Frank Rosillo-Calle | 23 | 47 | 2112 |
Jan Blomgren | 22 | 147 | 1591 |
Melanie Montgomery | 18 | 66 | 926 |
Falko Ueckerdt | 18 | 40 | 2158 |
Shahriar Badiei | 17 | 20 | 626 |
Christian Bernstone | 16 | 39 | 992 |
Tomasz Kozlowski | 16 | 126 | 965 |