Search for dissertations about: "Miljö- och energisystem"

Showing result 16 - 20 of 95 swedish dissertations containing the words Miljö- och energisystem.

  2. 16. Wood Fuel Pellets: Sawdust Drying in the Energy System

    Author : Magnus Ståhl; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood fuel pellets; sawdust; drying; pellet production; recirculation; VOC; system integration; Miljö- och energisystem; Environmental and Energy Systems;

    Abstract : In 2004, the amount of wood fuel pellets used in Sweden was 1 256 000 tons, it was mostly used in large scale burning for district heating. Over the last 10 years, a significant increase in pellet production has occurred and today the preferred raw materials for pellet production, i.e., dry sawdust and wood shavings, are insufficient. READ MORE

  4. 17. Food Packaging for Sustainable Development

    Author : Helén Williams; Fredrik Wikström; Ole Jørgen Hanssen; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Packaging; sustainable development; service perspective; food losses; food waste; consumer interaction; life cycle assessment - LCA; consumer value; Miljö- och energisystem; Environmental and Energy Systems;

    Abstract : Packaging has been on the environmental agenda for decades. It has been discussed and debated within the society mainly as an environmental problem. Production, distribution and consumption of food and drinks contribute significant to the environmental impact. However, consumers in the EU waste about 20% of the food they buy. READ MORE

  5. 18. Improved Energy Efficiency in the Aluminium Industry and its Supply Chains

    Author : Joakim Haraldsson; Magnus Karlsson; Maria Johansson; Max Åhman; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Energy is an essential resource in the daily lives of humans. However, the extraction and use of energy has an impact on the environment. The industrial sector accounts for a large share of the global final energy use and greenhouse gas (GHG) emissions. The largest source of industrial GHG emissions is energy use. READ MORE

  6. 19. System studies of biogas production : comparisons and performance

    Author : Emma Lindkvist; Magnus Karlsson; Mats Söderström; Maria Johansson; Ola Norrman Eriksson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Biogas has the potential to be part of the transition towards a more sustainable energy system. Biogas is a renewable energy source and can play an important role in modern waste management systems. Biogas production can also help recirculate nutrients back to farmland. READ MORE

  7. 20. Efficient treatment of forest industrial wastewaters : Energy efficiency and resilience during disturbances

    Author : Maria Sandberg; Karin Granström; Jonas Berghel; Alan Werker; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Forest industry; wastewater; oxygen transfer rate; black liquor; surface active; extractives; Miljö- och energisystem; Environmental and Energy Systems;

    Abstract : This work concerns the efficient treatment of wastewaters from pulp and paper mills by means of aerobic biological processes. For treatment processes there are many aspects of efficiency and the present study investigates both energy efficiency and purification efficiency during disturbances. READ MORE