Sökning: "reformer design"
Visar resultat 1 - 5 av 15 avhandlingar innehållade orden reformer design.
1. Design and evaluation of stationary polymer electrolyte fuel cell systems
Sammanfattning : The objectives of this doctoral thesis are to give a basisincluding methods for the development of stationary polymerelectrolyte fuel cell (PEFC) systems for combined heat andpower production. Moreover, the objectives include identifyingprerequisites, requirements and possibilities for PEFC systemsproducing heat and power for buildings in Sweden. LÄS MER
2. Hydrogen Generation for Fuel Cells in Auxiliary Power Systems
Sammanfattning : Heavy-duty trucks are in idle operation during long periods of time, providing the vehicles with electricity via the alternator at standstill. Idling trucks contribute to large amounts of emissions and high fuel consumption as a result of the low efficiency from fuel to electricity. LÄS MER
3. Rhodium diesel-reforming catalysts for fuel cell applications
Sammanfattning : Heavy-duty diesel truck engines are routinely idled at standstill to provide cab heating or air conditioning, and in addition to supply electricity to comfort units such as radio and TV. Idling is an inefficient and unfavorable process resulting in increased fuel consumption, increased emissions, shortened engine life, impaired driver rest and health, and elevated noise. LÄS MER
4. Design and Operation of a Chemical-Looping Reformer for Catalytic Upgrading of Biomass-Derived Gas
Sammanfattning : AbstractThe removal of tar from the raw gas produced during biomass gasification is necessary before the gas can be used as a feedstock for synthetic fuels. The currently commercially available technologies for gas cleaning, i.e. LÄS MER
5. Practice beyond technology when programming and mathematics teaching converge
Sammanfattning : This thesis examines how computer programming and mathematics teaching converge in the presence of a revised mathematics curriculum for upper secondary education. The focus is on the stratified policy strategies deployed by the institutions; how teachers tactically navigated the tensions and contradictions that arose in their everyday teaching; and how these tactics later consolidated in practice. LÄS MER