555 uppsatser · sida 33 av 37
En undersökning av alternativ till diesel som drivmedel för lastbilar
… Furthermore, fossil fuels have the disadvantage that they produce harmful emissions when combusted and thus affect the climate and air quality locally and globally. In this report we present a number of renewable fuels which could work as substitutes for diesel as fuel for …
Med fokus på Kvarteret Trettondagen
… Sweden and EU have goals to reduce the overall energy usage and greenhouse emission by 2020 and 2050. The concept of the passive house is one way to achieve the goals. In short, the concept of the passive house in Sweden is: The air tightness for the walls should be tighter than …
… Rex relaterat till byggnadsfysikaliska egenskaper så som värme, täthet, fukt, emissioner och miljöpåverkan. I rapporten presenteras handberäkningar på konstruktionernas U-värden och fuktpåverkan samt databeräkningar för köldbryggor över anslutning yttervägg-mellanbjälklag. Även …
… efficiency is important both to reduce costs and to reduce greenhouse gas emissions in the atmosphere. Reducing costs will also help maintain business competitiveness. Scania in Södertälje is a company where the optimization of energy use is an ongoing and continual process. One …
En studie om uppvärmning med pellets och flis
… the sensitivity of the models. Comparison of the annual carbon dioxide emissions shows that pellets causes lower emission than wood chips. The difference is about 300 kilograms. In comparison with the use of oil, pellets and wood chips would contribute to about 57 tons less …
en jämförelse med en minskning av svinnet
… fuels, but the required food waste contributes to increased greenhouse gas emissions as well as reduced bio diversity and eutrophication during the wasted food’s lifecycle. Thus, a reduced wastage appears to be superior to waste collection, but this reduction could potentially …
Hållbara Isoleringsmöjligheter förVandrarhemmet på Grinda
… could decrease the oil consumption. This could lead to a decrease in the CO emissions which leads to a decreased 2ecological footprint. The report found that the inn had to have an airflow between 345-2000l/s depending on the time of year and how many people were in the …
… are well insulatedwith good ventilation, good heating system and decreased emissions to ensure that theoccupants? health is not affected.
… vapour and small amounts of nitrogen dioxide as well as trace amounts of other emissions. Both Boeing (1) and Politecnico di Torino (2) have shown that it is possible to build an all-electric aircraft powered by fuel cells. Both flights used small, two-seater aircraft and a …
… in combustion engines will result in reduction of fuel consumption and CO2 emissions. A modern internal combustion engine has an efficiency of 30-45 %, where the most energy loss occurs as result of heat losses in the exhaust and cooling systems. By recovering and converting the …
… The aim is to look at the various processes, their chemical content and the emissions they cause to air and water. Another objective of the report is that it can be used as material for further development of the criteria for ”Bra Miljöval”.Results obtained when comparing the …
en empirisk undersökning av svenskproducerade biodrivmedels påverkan på åkermarkens användning
… a significantly higher climate impact than was earlier estimated, due to emissions from land use. In Sweden, both the use and production of biofuels from crops have increased substantially during the last decade. The purpose of this project is first to present an overview of the …
… target year 2050 in the municipality of Uppsala. The goal of reduced GHG-emissions from current 6,8 ton CO2-equivalents to 0,5 ton CO2-equivalents per capita and year, year 2050 is based on avoiding harmful penalties of an increased level of GHG in the atmosphere. By estimating …
… of big plastics such as beach littering, but also from sources of direct emission from e.g. beauty scrubbers and synthetic sand-blasting. These micro plastics are ingested by marine animals ” mistaking them for plankton ” or via prey. When ingested, the particles affect the …
… today. The boreal forest is representing a carbon sink and a buffert for the emissions that occurs. Changes in this ecosystem will for that reason contribute to major impact for the global carbon cycle. To study the impact of how elevated soil temperatures affects different …
