Search for dissertations about: "low-temperature"

Showing result 1 - 5 of 511 swedish dissertations containing the word low-temperature.

  1. 1. Low-temperature District Heating : Various Aspects of Fourth-generation Systems

    Author : Helge Averfalk; Sven Werner; Brian Elmegaard; Högskolan i Halmstad; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; District heating; low temperature; three-pipe systems; 4GDH-3P; District heating;

    Abstract : With decreasing heat demand and less availability of high-temperature heat supply in future energy systems, the current district heating systems may experience increased competition on the heat market. A viable option to mitigate increasing competition is to operate systems with lower temperature levels, and the most conceivable way to achieve lower temperature levels is to decrease return temperatures. READ MORE

  2. 2. Low - Temperature Basedboard Heaters in Built Environments

    Author : Adnan Ploskic; Sture Holmberg; Joachim Claesson; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Baseboard skirting heating; Low-temperature heating; Thermal comfort; Heat transfer; CFD; Chemical engineering; Kemiteknik;

    Abstract : The European Union has adopted a plan to decrease 20 % of total energy consumption through improved energy efficiency by 2020. One way of achieving this challenging goal may be to use efficient water-based heating systems supplied by heat pumps or othersustainable systems. READ MORE

  3. 3. Low temperature acclimation in plants : alterations in photosynthetic carbon metabolism

    Author : Maria Lundmark; Vaughan Hurry; Charles Guy; Umeå universitet; []
    Keywords : Plant physiology; cold acclimation; carbon metabolism; photosynthesis; respiration; Växtfysiologi; Physiological Botany; fysiologisk botanik;

    Abstract : Although low temperature plays an important role in determining agricultural yield, little is known about the effect on the underlying biochemical and physiological processes that influence plant growth. Photosynthesis and respiration are central to plant growth and both processes are heavily affected by temperature. READ MORE

  4. 4. Low-temperature growth of alumina

    Author : Jon M. Andersson; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : Physical phenomena related to the growth of alumina, A12O3, are investigated by experiments and ab initio calculations. Alumina is a well studied material with applications in a variety of areas, due to its many beneficial properties. READ MORE

  5. 5. Low-temperature Heating in Existing Swedish Residential Buildings : Toward Sustainable Retrofitting

    Author : Qian Wang; Sture Holmberg; Natasa Nord; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Retrofitting; Low-temperature heating; Energy efficiency; Sustainability; Swedish residential buildings; Renovering; Lågtemperatursuppvärmning; Energieffektivitet; Hållbarhet; Svenska bostadsbyggnader; Energiteknik; Energy Technology;

    Abstract : As an energy-efficient alternative in cold climate countries such as Sweden, low-temperature heating (LTH) technology has shown promising advantages and shortcuts to contribute to the efficiency of heat supply, as well as to the overall sustainability of building performance. The goal of this thesis is to contribute to the development of methodologies and modeling tools to support sustainable retrofitting in the Swedish housing stock. READ MORE