Sökning: "formation energy"

Visar resultat 21 - 25 av 1222 avhandlingar innehållade orden formation energy.

1. 21. Impact of Glass Formation on the Thermal Stability of Non-Fullerene Solar Cells

   Författare :Sandra Hultmark; Chalmers tekniska högskola; []
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER

3. 22. Layer formation on quartz particles during fluidized bed combustion/gasification of woody biomass

   Författare :Hanbing He; Christoffer Boman; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

   Sammanfattning : The formation of sticky layers on bed particles has been considered as a prerequisite for bed agglomeration in fluidized bed combustion and gasification of woody fuels. In addition, the layer formed makes the bed particle less resistant against fragmentation. The fragments from quartz particles can result in deposition. LÄS MER

4. 23. Simplified models for emission formation in diesel engines during transient operation

   Författare :Anders Westlund; Hans-Erik Ångström; Martti Larmi; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Diesel engine; emission modeling; transient operation; NOx; Soot; Mechanical energy engineering; Mekanisk energiteknik;

   Sammanfattning : The work presented in this thesis is the result of the KTH CICERO project “Dynamic Engine Performance” in which the main objective was to develop simple models foremission formation. The demand for such models is increasing, mainly due to the tightening emission legislation for diesel engines which has lead to more complex engines and thereby more laborious development and calibration processes. LÄS MER

5. 24. Role of Surface Morphology on Bed Particle Layer Formation During Thermal Conversion of Woody Biomass in Fluidized Beds

   Författare :Ali Valizadeh; Marcus Öhman; Xiaoyan Ji; Nils Skoglund; Matthias Kuba; Fabrizio Scala; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energiteknik; Energy Engineering;

   Sammanfattning : .... LÄS MER

7. 25. NOx formation in iron ore rotary kilns

   Författare :Rikard Edland; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rotary kiln; Grate-Kiln process; emissions control; combustion chemistry; Nitrogen oxides;

   Sammanfattning : Iron ore pellets are often produced using the so-called Grate-Kiln process, which is designed to oxidize the magnetite (Fe3O4) to hematite (Fe2O3) and to sinter the pellets so they can be used in steel manufacturing. The heat required for this process comes from the combustion of a pulverized fuel in a rotary kiln, involving the formation of a jet flame. LÄS MER