Search for dissertations about: "Thermal stability"

Showing result 1 - 5 of 539 swedish dissertations containing the words Thermal stability.

2. 1. Black liquor gasification : experimental stability studies of smelt components and refractory lining

   Author : Mathias Råberg; Dan Boström; Anders Nordin; Honghi Tran; Umeå universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; black liquor gasification; DTA; stability; thermal analysis; thermochemical data; HTM; HT-XRD; metastable; phase diagram; refractory lining; SEM; Chemical energy engineering; Kemisk energiteknik;

   Abstract : Black liquors are presently combusted in recovery boilers where the inorganic cooking chemicals are recovered and the energy in the organic material is converted to steam and electricity. A new technology, developed by Chemrec AB, is black liquor gasification (BLG). READ MORE

4. 2. Thermal Stability of Electrodeposited Nanocrystalline Ni- and Co-Based Materials

   Author : Melina da Silva; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanocrystalline materials; 3DAP; nanocomposite; thermal stability; TEM; nickel; texture; DSC; cobalt; grain growth; EBSD;

   Abstract : The attractive properties associated with nanocrystalline materials are to a large extent a result of their high intercrystalline volume fraction. However, the intrinsic instability of the nanostructured state may compromise the gain in properties by the occurrence of grain growth during exposure at elevated temperatures. READ MORE

5. 3. Thermally Conductive High-Density Polyethylene Composites for Ground Heat Exchangers

   Author : Adib Kalantar Mehrjerdi; Högskolan i Borås; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-density polyethylene; talc; thermal conductivity; thermal diffusivity; thermal stability; melt rheology; oxidation induction time; α relaxation; strain hardening;

   Abstract : Today, the energy used for the heating and cooling of offices, shopping centres, schools, residential areas, andother buildings is as large as 50% of the total energy consumption in the world. The climate change, globalwarming, and environmental issues have forced high requirements for energy efficiency and clean energyproduction in buildings. READ MORE

6. 4. Advanced fuels for thermal spectrum reactors

   Author : Jitka Zakova; Janne Wallenius; Jan-Leen Kloosterman; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; BWR; transmutation; thorium; Pu; MA; Am; Cm; AHTR; thermal; reactor; neutron;

   Abstract : The advanced fuels investigated in this thesis comprise fuels non− conventional in their design/form (TRISO), their composition (high content of plutonium and minor actinides) or their use in a reactor type, in which they have not been used before (e.g. nitride fuel in BWR). READ MORE

7. 5. Impact of Glass Formation on the Thermal Stability of Non-Fullerene Solar Cells

   Author : Sandra Hultmark; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; nanostructure.; glass formation; conjugated polymers; kinetic fragility; organic solar cells; Keywords: organic electronics; bulk heterojunction blend; thermal stability;

   Abstract : The world is facing immense challenges such as climate change and the depletion of non-renewable resources, making renewable sources of energy essential for a sustainable future. Organic solar cells are emerging as a promising technology; however, their stability requires significant improvement. READ MORE