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61	Förnybar energi på Svalbard Andreasson, Tobias, Lindh, Emelia January 2018 (has links) This degree thesis investigates the possibilities of producing food inside a container at Svalbard, using renewable energy and energy storage. The idea was to be able to place the container at remote places without the need of being connected to the grid. We chose Svalbard, where it is cold and the sun is shining 24 hours a day at summertime. In the winter the opposite occurs and the sun is absent from the sky. The work is divided into theoretical studies and results based on different calculations. Such as economical evaluations (LCOE), and simulations using the computer programs Matlab and PVsyst. We have investigated if solar power and wind power is suitable as energy sources. Options for storage were batteries, grid and hydrogen storage. Different cases with Photovoltaics- and wind power plants, with batteries or grid, were compared against each other. It is not possible to use the grid as storage. This resulted in different sizing of our cases, with no excess energy production. The result showed that a 5 kWp photvoltaic plant with dual axis tracking system, was the most profitable. The Pay off would be 14 years and the total profit 63 453 SEK. If it will become possible in the future to use the grid at Svalbard as storage, it will open up opportunites for bigger systems. This will lead to higher profit than with smaller ones. Our results show that it is now most profitable with solar power. off grid container food renewable energy storage batteries Futufarm AB Leafy Green Machine Svalbard photovoltaics windpower PVsyst Matlab future Förnybar energi Svalbard solceller vindkraft kallt klimat odling hydroponisk tracking midnattssol polarnatt Longyearbyen container hållbar hybrid elnät framtid Futufarm AB självförsörjande energikällor energilagring batterilagring effektutjämning PVsyst Matlab Energy Systems Energisystem
62	Korelace abiotických proxy v holocenních jezerních sedimentech peri-Atlantské Arktidy / Correlation of abiotic proxies in Holocene lacustrine sediments of Peri-Atlantic Arctic Roman, Matěj January 2017 (has links) The peri-Atlantic Arctic, one of the most sensitive components of the Earth climate system, experienced pronounced climatic fluctuations during the Holocene. Several external forcings were considered responsible for these variations, including decline of insolation on the Northern Hemisphere, changes in distribution of land ice mass, explosive volcanism, or changes in atmospheric and oceanic circulation. In order to explore the driving mechanisms of the peri-Atlantic Arctic environmental variability, three sites located in different parts of the region were selected for palaeoenvironmental reconstructions with focus on extracting the climatic information. With this intention, sedimentary cores from i) Lake Garmaksla, Central Svalbard, ii) Jarfjorden, northeastern Norway, and iii) Kobbefjord area, southwestern Greenland, were retrieved and subjected to multi-proxy investigation. The absolute chronostratigraphic framework was established by comprehensive radiocarbon (14 C) and short-lived radioisotopes (210 Pb, 137 Cs) dating. Further analyses include measurements of magnetic susceptibility, grain size distribution, element composition by means of X-ray fluorescence (XRF), and elements bound to organic matter, i.e. organic carbon, nitrogen, sulphur and biogenic silica. The relationships between the...

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Förnybar energi på Svalbard

Korelace abiotických proxy v holocenních jezerních sedimentech peri-Atlantské Arktidy / Correlation of abiotic proxies in Holocene lacustrine sediments of Peri-Atlantic Arctic