Search for dissertations about: "Electricity saving"

Showing result 16 - 20 of 47 swedish dissertations containing the words Electricity saving.

  2. 16. Carbon utilisation for extended nitrogen removal and resource savings

    Author : Tobias Hey; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; primary sludge hydrolysis; carbon source; energy; resources; denitrification; environment; economy; volatile fatty acids; multiple pH point titration; wastewater treatment; activated sludge simulation.;

    Abstract : A full-scale in-line primary sludge hydrolysis experiment was conducted in one out of four primary settlers at the Klagshamn Wastewater Treatment Plant (WWTP) to test if the wastewater quality can be improved in terms of providing easily accessible carbon for possible pre-denitrification and the reduction of external carbon sources. The amount of easily accessible carbon produced, in the form of the volatile fatty acid (VFA), alkalinity and ammonium concentrations, was measured throughout the entire full-scale experiment at the outlet of the hydrolysis tank and that of the ordinary primary settler, which served as a reference line. READ MORE

  4. 17. Energy Efficient Evaporation in Future Kraft Pulp Mills

    Author : Jessica Algehed; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; process integration; black liquor; pulp and paper; pinch technology; wastewater; evaporation; excess heat; economics; energy;

    Abstract : In the future, the technical and economic conditions for energy savings in the pulp and paper industry will change. More excess heat will be available in future mills above 80°C than in existing mills, increasing the potential for process integration, and governmental actions for reducing CO2 emissions and the deregulation of electricity markets will change the economic conditions for investments aimed at saving energy. READ MORE

  5. 18. System Effects of Improved Energy Efficiency in Swedish District-Heated Buildings

    Author : Magnus Åberg; Ewa Wäckelgård; Henrik Lund; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; district heating; carbon dioxide emissions; building energy efficiency; combined heat and power; Engineering Science; Teknisk fysik;

    Abstract : To alleviate global warming, European-Union member states must reduce primary energy use, emit less carbon dioxide (CO2), and increase renewable energy use. Buildings constitute a great potential for energy savings, but saving energy in district-heated buildings influences combined heat and power (CHP) production, other electricity generation, and global CO2 emissions. READ MORE

  6. 19. Sustaining Sustainable Behaviours of Citizens by Creating Value in Their Everyday Life

    Author : Aram Mäkivierikko; Fredrik Gröndahl; Olga Kordas; Hossein Shahrokni; Giulio Jacucci; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Energy feedback; Waste feedback; Consumer engagement; Energy behaviour; Peak-load reduction; Behavioural demand response; Waste sorting behaviour; Automated waste collection system; Social networks; Smart grids; Energy communities; Design principles for feedback; Energiåterkoppling; Återkoppling på avfall; Konsumentengagemang; Energibeteende; Minskning av topplast; Beteendebaserad demand response; Sopsorteringsbeteende; Sopsug; Sociala nätverk; Smarta elnät; Energigemenskaper; Designprinciper för återkoppling; Industriell ekologi; Industrial Ecology;

    Abstract : Over 60% of global greenhouse gas emissions derive from household consumption patterns. To reach the 1.5-degree target set in the Paris Agreement, new interventions to influence household behaviours are needed. This thesis examined two areas, household electricity consumption and waste sorting, where behaviour plays a large role. READ MORE

  7. 20. Optimization of process integration investments under energy market uncertainties

    Author : Elin Svensson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; stochastic programming; scenario-based modelling; investment planning; process integration;

    Abstract : The increased climate concern in society puts pressure on industries to decrease their energy use in different ways, and a number of studies show that there is a large potential for improved energy efficiency in the energy-intensive industry, for example through process integration. Uncertainties about future energy prices and policy instruments make it, however, difficult to evaluate and compare different kinds of energy-saving measures with respect to net present value as well as reduction of CO2 emissions. READ MORE