Sökning: "Henrik Thunman"

Hittade 4 avhandlingar innehållade orden Henrik Thunman.

1. 1. Loading and Size Distribution of Fuel in a Fluidised Bed Combustor

   Författare :Henrik Thunman; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fuel size distribution; heat and mass transfer to a fuel particle; fragmentation; two-color pyrometry; Fludized bed; fuel loading; parametric study;

   Sammanfattning : .... LÄS MER

3. 2. Principles and Models of Solid Fuel Combustion

   Författare :Henrik Thunman; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood; single particle; modelling; fluidized bed; thermochemical conversion; fixed bed; coal; thermal conductivity; fuel loading; measurements; thermochemical properties; biofuels; combustion; grate;

   Sammanfattning : Combustion of solid fuels stands for a substantial part of the heat and power production in the world. In this thesis different aspects related to the thermochemical conversion of solid fuels in fluidized and fixed beds are treated, such as: the combustion temperature of a fuel particle related to the surrounding temperature in a fluidized bed combustor (FBC); the fuel loading in a FBC; a transient description of the conversion of non-spherical fuel particles; the thermochemical properties and composition of volatiles released from wood; the thermal conductivity of wood during different stages of conversion; the modelling of a grate furnace; the general combustion behaviour of a fixed bed on a reciprocating or a travelling grate; and finally, the design and construction of experimental units for investigation of combustion in a fixed bed. LÄS MER

4. 3. Selected or Rejected? : Assessing Aspiring Writers’ Attempts to Achieve Publication

   Författare :Henrik Fürst; Patrik Aspers; Elin Thunman; Giselinde Kuipers; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; acquisition of cultural goods; acquisition of manuscripts; artistic careers; artistic markets; aspiring artists; aspiring writers; creative industry; cultural industry; cultural production; fiction debut; literary careers; publishing industry; publishing market; quality uncertainty; sociology of success and failure; trade publishing; Sociologi; Sociology;

   Sammanfattning : In many markets for cultural goods, gatekeepers select the cultural goods, relatively few cultural goods are selected, and the criteria for selection are unclear to both artists and gatekeepers. Not knowing whether cultural goods are of the 'right' quality to be selected, artists and gatekeepers become preoccupied with handling quality uncertainty. LÄS MER

5. 4. Emissions from realistic operation of residential wood pellets heating systems

   Författare :Kaung Myat Win; Rebei Bel Fdhila; Tomas Persson; Erik Dahlquist; Henrik Thunman; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood pellet; Heating; Combustion; boiler; stove; emissions; particulate matter; Energy- and Environmental Engineering; energi- och miljöteknik; SWX-Energi; Integrerade system för sol och biobränsle;

   Sammanfattning : Emissions from residential combustion appliances vary significantly depending on the firing behaviours and combustion conditions, in addition to combustion technologies and fuel quality. Although wood pellet combustion in residential heating boilers is efficient, the combustion conditions during start-up and stop phases are not optimal and produce significantly high emissions such as carbon monoxide and hydrocarbon from incomplete combustion. LÄS MER