The aim for the thesis is to look at the performance of natural refrigerants in heat pumps while operating in a colder climate. The advantage of using natural refrigerants is that they have significantly lower global warming potential (GWP) in comparison to the synthetic refrigerants i.e. hydro fluorocarbons (HFC) and hydro chlorofluorocarbons (HCFC). Natural refrigerants are becoming common to use ...

Accurate predictions of free energies and the corresponding enthalpies and entropies from computer simulations are invaluable for understanding enzymatic catalysis and drug actions in terms of actual structure activity relationships. To facilitate the management and handling of the enormous amount of data generated when calculating thermodynamic parameters, we have developed a high-throughput interface ...

Kristian Eilertsen i Troms FRP prøver i Nordlys 24. juni febrilsk å justere fakta etter sine politiske oppfatninger – og ikke motsatt – når han oppdager at seriøse argumenter mot menneskeskapte klimaendringer forsvinner som dugg for solen. Han er heldigvis på kollisjonskurs med FRPs egen olje- og energiminister, som sammen med direktøreni Statoil har erklært at det skjer en menneskeskapt global ...

The master’s thesis ‘Seismic surveys in ice-covered waters’ describes several methods within the maritime seismic industry to acquire data concerning the Earth’s strata. It is the objective of this thesis to present a viable solution enabling the seismic industry to perform surveys in ice influenced waters. The hardware conducted for conventional seismic surveys are introduced and explained. ...

Estimates which indicate a large share of the world’s undiscovered oil and gas resources is to be found in the Arctic areas and the increasing demand for energy are important reasons for the growing interest in the High North region. As the offshore industry expands into the High North, system failures associated with these projects is expected to increase significantly. Hence, the quest for ...

The oil and gas industry has expanded consistently from land operations to inland waterways and then to offshore. A platform supply vessel (PSV) is an important element of offshore supply logistics. Hence, its acceptable level of availability performance is highly demanded. Identification of critical components provides essential information for improving and optimizing the maintenance management, ...

The field of reliability engineering is developing, as needed in the industry. This is especially in arctic regions which now are being explored and vast recourses and opportunities are found. The reliability research is limited in the arctic, little knowledge is known about operating in the arctic regions. This research study will analyze equipment in an arctic region, Svalbard. It calculates the ...

This thesis evaluates the risk of ship collisions in the Barents Sea in 2030 between three future scenarios; Minimum, Basis and Maximum Scenario. IWRAP Mk2 program is utilized to make the calculations. Automatic Identification System (AIS) data of 2013 is used to parameterize current traffic density, while the increased traffic in the different scenarios is derived from an analysis of multiple ...

Debris flows are a mountain slope hazard relatively well studied in densely populated mountainous regions, while few investigations have been done in Arctic permafrost regions. In order to get a better understanding of the processes involved in such an envi-ronment, this work focused on debris flow hazards in the mountains close to Longyear-byen and Svea on Svalbard, Norway, situated at 78°N. A ...

This study was carried out using three high resolution 3D P-cable seismic datasets to explore shallow gas distribution and possible fluid migration pathways in the Snøhvit field and Ringvassøy-Loppa Fault Complex. The Snøhvit field situated in the center of the Hammerfest Basin is oil and gas field discovered in 1994. Ringvassøy-Loppa Fault complex marks the border between the Hammerfest and Tromsø ...