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The aim of this essay was to study the nitrogen flow in two willow plantations, at different locations in the south of Sweden, that were irrigated with sewage. The study was also performed to compare the differences in nitrogen flows between two years, 1998 and 1999. The study …
… local authorities are what to do with the sludge produced insewagetreatment plants. The tax for landfill leads to higher costs with 250 SEK/ton. On the 31December 2004 it will be forbidden to landfill sludge. In Sweden the yearly production of sludge is 240 000 tons, counted as …
This report contains CFD-simulations of cable tray fires in nuclear power plant applications with the CFD-code SMAFS. Furthermore the report evaluates the use of CFD-codes within this kind of problems. The assessment of this report is that there is a tendency towards the good …
en modellstudie vid dimensionerande flöde
Sydkraft Vattenkraft AB owns and operates the Traryd hydropower plant, located in the river Lagan in the southern part of Sweden. The gravity dam is classed according to RIDAS guidelines (Hydropower Industry Dam Safety Guidelines) as a class 1B dam. This means that the dam must …
… construction- and industrial waste, retted sludge from sewage treatment plants and soil, which all can produce large quantities of methane gas. The investigation about the different methods for conducting a water balance resulted in the presentation of two methods. One of the …
… how the power quality in the grid is affected by the connection of wind power plants. As things are at present, Fortum Distribution AB has a number of wind turbines and wind parks connected to the own grid. As the pressure on building and connecting additional wind power is …
Simulering av lagerutformning och konsekvensen av adderade uppvärmningsbehov motsvarande en pool och ett atrium
… used in the winter when the demand for heating is greatest. Today's existing plants are mainly in Europe and particularly in Germany. These facilities are designed to supply heat demands greater than 400 MWh and covers about 40-50 % of this need which consists of energy for …
results 9-19 years after stand establishment
… and tree damages for Scots pine (Pinus sylvestris L.) after direct seeding and planting. The study also attempts to simulate growth until first thinning. Regeneration cost per hectare and tree was also evaluated for the different treatments. The study was performed in 2011 in …
påverkan på ekonomi och miljö
… scenarios and set parameters freely. The user is tasked with building power plants to supply the city/region with district heating and electricity during a pre-set number of years. When the simulation is finished the result is graded in the following categories: economy …
<em>Förslag på design av statorstomme för användning i vertikalaxlade vindkraftverk</em>
… a support frame for a synchronousgenerator used in a vertical axis wind power plant. In this system the generator isplaced on ground level. The thesis also considers the design of housing for thesupport frame and generator. The concept presented in this report is based on …
soil carbon and yield modelling for crop rotations with rye
… when straw is tilled back into the field, due to rapid degradation of fresh plant material in soil. The best rotation, in terms of yield relative to carbon effects, was found to be Rye-Rye-Potatoes-Wheat, highly productive (high yield of total solids, energy and protein, low …
In industry applications, such as power supply plants, the issue of interaction between fluid and structure is always presented. More precisely, the fluid flow affects the structure by applying force(s) on it and vice versa. As a result, the structure can move (vibrate) or …
At Forsmark nuclear power plant the rather old-fashioned software COPTA is used in containment safety analysis. There exists a desire within the organisation to introduce a more modern software with ability to more detailed modeling and increased usability. The goal of this …
En ja?mförelse av olika transportslag mellan Mertainen och Svappavaara
… has on transporting iron ore from the mine of Mertainen to a processing plant in Svappavaara. Electrified trucks are compared with conventional trucks, and diesel and electric trains. The evaluation was made with respect to energy consumption, environmental impact, and cost. The …
Hur slagkraftig a?r dagens ha?llbarhetscertifiering och kan den föra?ndra mark- och vattenpa?verkan fra?n odlingarna?
… show that fertilizers are very effective during the first years after a new plant has been planted. In conclusion the study shows that the amount of fertilizers added affects the cultivation more than the choice of harvest. On the other hand excessive use of fertilizers will …
