Sökning: "higher heating value"

Visar resultat 21 - 25 av 63 avhandlingar innehållade orden higher heating value.

1. 21. Internal Tar/CH4 Reforming in Biomass Dual Fluidised Bed Gasifiers towards Fuel Synthesis

   Författare :Kristina Göransson; Per Engstrand; Wennan Zhang; Kevin J Whitty; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Allothermal gasification; Bio-automotive fuels; Biomass gasification; Catalytic bed-material; Dual fluidised bed; Ni-catalyst; Syngas cleaning; Tar removal; Tar CH4 reforming;

   Sammanfattning : Production of high-quality syngas from biomass gasification in a dual fluidised bed gasifier (DFBG) has made a significant progress in R&D and Technology demonstration. An S&M scale bio-automotive fuel plant close to the feedstock resources is preferable as biomass feedstock is widely sparse and has relatively low density, low heating value and high moisture content. LÄS MER

3. 22. Nanotemplated High-Temperature Materials for Catalytic Combustion

   Författare :Erik Elm Svensson; Sven Järås; Magali Boutonnet; James J. Spivey; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbon templating; Catalytic combustion; Ceria; Gas turbine; Hexaaluminate; Magnesia; Methane; Microemulsion; Perovskite; Chemical engineering; Kemiteknik;

   Sammanfattning : Catalytic combustion is a promising technology for heat and power applications, especially gas turbines. By using catalytic combustion ultra low emissions of nitrogen oxides (NOX), carbon monoxide (CO) and unburned hydrocarbons (UHC) can be reached simultaneously, which is very difficult with conventional combustion technologies. LÄS MER

4. 23. Performance of Energy Efficient Windows and Solar Shading Devices

   Författare :Tobias Rosencrantz; Avdelningen för Energi och byggnadsdesign; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : This Licentiate dissertation deals with windows and solar shading devices and how they could be designed and used to save energy for heating and cooling in buildings. Parametric studies using the dynamic energy simulation software ParaSol v 2.0 were performed for different windows and solar shading devices. LÄS MER

5. 24. Investigating magnetic fields in the solar chromosphere

   Författare :Alexander Pietrow; Dan Kiselman; Jaime de la Cruz Rodr´ıguez; Oleg Kochukhov; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sun; chromosphere; plage; Astronomy; astronomi;

   Sammanfattning : Solar plage has been the topic of many studies since its initial description in the mid 19th century, but as of yet it has not been understood to the point where we can reproduce all aspects of these active regions in quasi-realistic numerical models. To a large extent, this is caused by an incomplete understanding of the magnetic structure that drives the activity in these areas. LÄS MER

7. 25. Pyrolysis of Biodegradable Waste for Negative Carbon Emissions

   Författare :Shule Wang; Weihong Yang; Pär Jönsson; Chunfei Wu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pyrolysis; Organic fraction of municipal solid waste OFMSW ; Anaerobic digestion; Bioenergy with carbon capture and storage BECCS ; Methane production; 热解，市政污泥，消化物，碳负排放，生物降解垃圾，甲烷，生物能源与碳捕获和储存; pyrolys; slam; rötrester; negative kolemissioner; biologiskt nedbrytbart avfall; metan; BECCS; Teknisk materialvetenskap; Materials Science and Engineering; Chemical Engineering; Kemiteknik; Energy Technology; Energiteknik;

   Sammanfattning : Bioenergy with Carbon Capture and Storage represents a crucial technology that enables an energy production with negative carbon emissions, which is needed to achieve global climate goals. Appropriated management of biodegradable waste, including biodegradable lignocellulosic waste, sewage sludge, organic fraction of municipal solid waste, can make this contribution. LÄS MER