Sökning: "Teknik och teknologier Naturresursteknik Energisystem"
Visar resultat 11 - 15 av 472 avhandlingar innehållade orden Teknik och teknologier Naturresursteknik Energisystem.
11. Research and reflections on European air pollution policy support models
Sammanfattning : European emissions to air of SO2, NOx, PM2.5, NH3 and NMVOC still today cause harm to human health and the environment. These pollutants are associated with the premature death of ~400 000 people annually in the EU (25 000 perished in traffic accidents 2017). Improvements are expected but problems will persist. LÄS MER
12. Distributed thermal response tests : New insights on U-pipe and Coaxial heat exchangers in groundwater-filled boreholes
Sammanfattning : U-pipe Borehole Heat Exchangers (BHE) are widely used today in ground source heating and cooling systems in spite of their less than optimal performance. This thesis provides a better understanding on the function of U-pipe BHEs and Investigates alternative methods to reduce the temperature difference between the circulating fluid and the borehole wall, including one thermosyphon and three different types of coaxial BHEs. LÄS MER
13. Policy Integration for Sustainable Transport Development : Case Studies of Two Swedish Regions
Sammanfattning : It has been argued that for the management of complex issues such as sustainability, which transcend traditional policy sectors and require coordination between several different interests and actors, policymaking depends upon collaboration and integration processes between different sectors and tiers of government. The overall aim of this thesis is therefore to study how and why (or why not) policy integration processes are being developed in regional policymaking and what this means for the achievement of sustainable transport. LÄS MER
14. Land-use competition and agricultural greenhouse gas emissions in a climate change mitigation perspective
Sammanfattning : Productive land for food production, bioenergy, or preservation of nature is a limited resource. Climate change mitigation puts additional pressure on land via higher demand for bioenergy to replace fossil fuels and via restrictions on deforestation—two processes that limit the availability of land for food produc- tion, and may thus also raise food prices. LÄS MER
15. Environmental assessment of present and future marine fuels
Sammanfattning : Our globalised world is connected by shipping, an industry powered by one of heaviest and dirtiest products of refining: heavy fuel oil. Tougher environmental regulations are now challenging the industry to take action. LÄS MER