Sökning: "biofuel"

Visar resultat 1 - 5 av 157 avhandlingar innehållade ordet biofuel.

  1. 1. Modelling of biofuel combustion in fixed beds

    Detta är en avhandling från Chalmers University of Technology

    Författare :Robert Johansson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Övriga teknikvetenskaper; Other technology; modelling; combustion; biofuel; fixed bed; packed bed;

    Sammanfattning : Fixed bed combustion is common is small to medium scale heat production in grate furnaces and domestic boilers. Modelling of these fuel beds can give a better understanding of the conversion process inside them, and provide a tool for analyzing the performance of furnaces and problems related to the fuel bed. LÄS MER

  2. 2. Acute cardiovascular effects of biofuel exhaust exposure

    Detta är en avhandling från Umeå : Umeå Universitet

    Författare :Jon Unosson; Umeå universitet.; [2014]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cardiovascular; air pollution; endothelial dyssfunction; arterial stiffness; wood smoke; woodsmoke; biodiesel; RME; biofuel; diesel exhaust;

    Sammanfattning : BackgroundAnthropogenic air pollution is a global health problem estimated to contribute to millions of premature deaths. Exposure to biomass smoke is common due to varying sources, such as wildfires, indoor cooking over open fires, and residential heating from wood stoves. LÄS MER

  3. 3. Biomass to Biofuel : Syngas Cleaning and Biomass Feedstock

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Ramiar Sadegh-Vaziri; KTH.; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gas-Solid Reaction; ZnO Sul_dation; Outward Growth; Hollow Particles; Algae Flocculation; PBEs; Fractal Clusters; Restructuring of Clusters; Deposition of Clusters; Primary Particle Aggregation.;

    Sammanfattning : This thesis builds around the idea of a biofuel production process that is comprised of biomass production, biomass gasification, gas cleaning, and fuel production. In this work, we specifically looked into H2S removal as a part of cleaning the producer gas and flocculation of microalgae which is involved in the harvesting of microalgae after biomass production. LÄS MER

  4. 4. Industrial Symbiosis for the development of Biofuel Production

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Michael Martin; Linköpings universitet.; Linköpings universitet.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biofuel; industrial symbiosis; biogas; ethanol; biodiesel; TECHNOLOGY Other technology Environmental engineering; TEKNIKVETENSKAP Övriga teknikvetenskaper Miljöteknik;

    Sammanfattning : In recent years the popularity of biofuels has been transformed from a sustainable option fortransportation to a questionable and criticized method. Many reports have therefore beenproduced to view biofuel production from a life cycle perspective; though results may bemisleading. LÄS MER

  5. 5. Rapid measurements of the moisture content in biofuel

    Detta är en avhandling från Institutionen för Samhällsteknik

    Författare :Jenny Nyström; Mälardalens högskola.; [2006]
    Nyckelord :radiofrequency measurement; moisture content measurement; fuel characterization; biofuel; time domain measurement; Bulk measurement; Multivariate data analysis;

    Sammanfattning : An increasing number of power plants in Scandinavia are beginning to use biofuel instead of coal or oil. The material in the new fuel is a mixture of woodchips, mostly Pine, Spruce and Salix, bark, GROT (tops and branches from felling waste) and sawdust from sawmills. It is heterogeneous, having a moisture content varying from 15% up to 65%. LÄS MER