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… buildings and to find measures that can be taken to improve its energy efficiency. The chosen building Zoologen, is used for research and education. The main method of the study is computer simulations of the present building and of possible energy reducing measures to be made …
… of fossil fuels. This calls for the development of engines with a higher efficiency and less harmful emissions. One interesting concept is the Homogeneous Charge Compression Ignition (HCCI) engine, which has the advantages of potentially low emissions combined with high …
The Goal with this Master of Science thesis is to expand the possible turbine efficiency measurements on an exhaust turbocharger. It was done as a part of the CICERO competence centre. To feed the turbine with air a special flow rig has been used. Instead of loading the turbine …
… Compared to PC-grinder 3068 the Wobble plate pump shows up to 15 % better efficiency. The grinder, which wobbles just like the wobble plate, has a unique grinding principle. This grinder design led to a patent application. The grinder test results proved that the grinding …
… to a normal mixer, depending on whether or not a jet ring is used. The mixer’s efficiency increases by 1-5 % compared to a normal mixer. Tests with the mixer’s jet shows that by using guide vanes, the jet becomes more stable, and obtains a higher velocity. After evaluating seven …
… essay discusses and evaluates the international currency market in regards to efficiency. To prove the theory that, the difference between expected and actual exchange rates is explained by the difference in expected and actual interest rates and the difference in expected and …
… data analysis of two measurements; value added per employee and human capital efficiency. The theoretical framework includes definitions of human capital. Theories regarding human capital investments and how to find and develop the human capital are presented. The relation …
… mentioned above. The ion exchange did not work as planned as the filtering efficiency gradually declined during the latter part of the experiment. Presumably this was due more to technical problems than to chemical ones. It seems likely that channels may have formed in the …
en styrmedelsanalys
… measure is cost efficient depends on how, and in relation to what, the cost efficiency is measured. As it is interpreted in this thesis, the tax exemption is indeed a cost efficient measure to increase the usage of biofuels. Furthermore, the thesis shows that were the government …
orsaker till effektiv kontroll
… eliminate unwanted bilberry (Vaccinium myrtillus L.) in the boreal forest. The efficiency of steam to suppress bilberry was compared with prescribed burning and cutting the bilberry. Different combinations of steaming and/or cutting the bilberry were set up to investigate in …
En utvärdering av ett integrationsprojekt i Göteborg
… five different criteria; effectiveness, impact, relevance, sustainability and efficiency. From this I have concluded that the idea of a cooperation between organizations is good and necessary a better cooperation with the municipality is needed to make it work better. The …
… friction and wear on the piston and the cylinder. Today’s engines have an efficiency loss in total of 70%. 30 % is lost in the cylinder. Solving this problem could result in a heavy increasing of the efficiency. The group has under this project solved this problem with a …
Beräkningsjämförelser mellan eurocodes och BKR
… we could make the conclusion that dimensioning with Eurocode a higher efficiency was received, a 10 % higher efficiency on the materials. The strength of the material is with calculations with Eurocode higher, and so are the loads. One of the reasons for this is that the …
En analys av medeltida konstruktionsråd för mekaniskt artilleri
… shear. The three types of counterweight engine are optimized with regard to efficiency and maximum range per total arm length. Initially, mass-less arms without friction are examined, followed by the introduction of a physical arm, dissi-pation effects, and finally a physical …
-en motkolvs HCCI motor
… ignition. The combustion is quick and simultaneous which leaves a high efficiency and naturally low emissions of NO xand soot. The compression ignition timing is instable which is the reason for using variable compression ratio. The mechanical system for changing compression …
