99 uppsatser · sida 5 av 7
This master thesis covers the seasonal planning of a small scale hydropower system. The system in this study is owned and operated by Mälarenergi Vattenkraft AB. The total system consists of 4 different main rivers with 24 hydropower stations and several dams. The total …
Modellkonstruktion och Utvärdering med ORWARE
… An electricity cost that inthis case is assumed to be provided through coal power, which is a common assumption whenassessing the impact of margin power utilization in life cycle assessment. If that assumptioncould instead be that the electricity is provided by a less polluting …
A new build in the Swedish nuclear power system would entail increased re-quirements for the proposed repository, which is adapted after the reactors of today. With a fast reactor, capable of burning nuclear waste, operating in parallel with the light water reactors, the …
… the possibilities and difficulties associated with the design of an electric power assist servo for all terrain vehicles (ATVs). The project has been carried out in collaboration with Nira Control AB. Nira designs and manufactures electric and electro mechanic products mainly …
… different groups of water cooling loops are the block design and the pumping power. The performance of both categories is also largely dependent on the fan power, but increasing fan power has a large negative impact on the noise level.Both radiator size and fan model choice …
Metoder för att sänka återledningstemperaturen
… Another benefit that comes from this is improved combustion efficiency at the power plant, since drying the fuel causes an Increase of the heating value. Simulations has been made in Excel, and with use of linear regression, to find out if it is profitable. Data for this purpose …
påverkan på ekonomi och miljö
… new 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 …
En numerisk analys av den ringformade koaxiala borrhålsvärmeväxlaren
… comparison with a U-pipe BHE. This is equivalent to 10-19 % lower electrical power consumption every year.
… report deals with the theoretical aspects of preamplifiers, crossovers and power amplifiers as well as power supply and control. The section about design accounts for the layout of the system and simulation results show how the system should work. The section regarding …
… an air-pump. The current through the pump is measured and correlates to the power consumed by the pump. As the power is a function of the pressure difference over the pump, the pump current correlates to the pressure in the tank. Thus, the pump current can be used as a measure …
Because of increasing demand of power on Malmbanan the capacity of the existing wires which supply the trains must be increased. This increases the stress on the existing poles and for this reason the system for supplying the loads along the railway is to be removed from the …
<em>-Fokus på inomhusklimatet och energianvändning</em>
… chamber and measurements were made on the basis of the perceived comfort and power requirements. Three different effects were used for each room heater to allow the graph to indicate a possible straight line. The result was as expected a straight line for the radiator while for …
… engine, which has resulted in a substantial trend towards electrification of powertrains. Storage of electrical energy is the fundamental component in this technology where the lithium-ion batteries are currently considered as the most appropriate solution. Lithium-ion …
Fallstudie av elproducerande system på ett handelscentrum
… on Gränby Centrums roof was examined. From data containing wind power,wind direction and total irradiation, possible production from a system weresimulated. Three products of each technology were examined in the simulations.From the simulated production an economic analysis was …
ett nytt kommunikationsprimitiv för trådlösa sensornätverk
… must be made to be able to withstand years of usage without having to change power source as that would be too costly. These devices are typically small, inexpensive and severally resource constrained. Communication is mainly wireless, and the wireless transceiver on the node is …
