Sökning: "thermodynamic assessment"

Visar resultat 6 - 10 av 32 avhandlingar innehållade orden thermodynamic assessment.

1. 6. Thermodynamic analysis of Stirling engine systems : Applications for combined heat and power

   Författare :Joseph Adhemar Araoz Ramos; Torsten Fransson; Carlos Augusto Santos Silva; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stirling engine; Thermodynamic analysis; Energiteknik; Energy Technology;

   Sammanfattning : Increasing energy demands and environmental problems require innovative systems for electrical and thermal energy production. In this scenario, the development of small scale energy systems has become an interesting alternative to the conventional large scale centralized plants. LÄS MER

3. 7. Thermodynamic Properties of CO2 Mixtures and Their Applications in Advanced Power Cycles with CO2 Capture Processes

   Författare :Hailong Li; Jinyue Yan; Umberto Desideri; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermodynamic property; vapour liquid equilibrium; density; equation of state; interaction parameter; CO2 mixtures; evaporative gas turbine; chemical absorption; oxy-fuel combustion; cost evaluation; CO2 capture and storage; Chemical engineering; Kemiteknik;

   Sammanfattning : The thermodynamic properties of CO2-mixtures are essential for the design and operation of CO2 Capture and Storage (CCS) systems. A better understanding of the thermodynamic properties of CO2 mixtures could provide a scientific basis to define a proper guideline of CO2 purity and impure components for the CCS processes according to technical, safety and environmental requirements. LÄS MER

4. 8. Measurements of the thermodynamic activities of chromium  and vanadium oxides in CaO-MgO-Al2O3-SiO2 slags

   Författare :Pengli Dong; Seshadri Seetharaman; Mselly Mbwambo Nzotta; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thermodynamic activity; chromium oxide; vanadium oxide; equilibrium; slags; slag basicity; gas-equilibration technique; Metallurgical process engineering; Metallurgisk processteknik;

   Sammanfattning : In the present work, the thermodynamic activities of chromium and vanadium oxide in CaO-SiO2-MgO-Al2O3 slags were measured using gas-slag equilibration technique. The slag was equilibrated with a gas mixture of CO, CO2 and Ar gases enabling well-defined oxygen partial pressures in the gas mixture (PO2=10-3,10-4,10-5 Pa) at temperatures 1803, 1823K, 1873, 1923 K. LÄS MER

5. 9. Thermodynamic modelling of carbides in multicomponent systems : theoretical and experimental approach

   Författare :Andreas Markström; Bo Sundman; José Garcia; KTH; []
   Nyckelord :;

   Sammanfattning : This thesis concerns thermodynamic modeling of carbides in multicomponent systems. Focus has been made on systems interesting for cemented carbide production but the results are also useful for many other application were the material consist of different carbides, for example tool steels/high speed steels. LÄS MER

7. 10. First step to a genomic CALPHAD database for cemented carbides : C-Co-Cr alloys

   Författare :Zhou Li; Malin Selleby; Jana Pavlu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CALPHAD; Einstein model; two-state model; compound energy formalism; thermodynamic description; C-Co-Cr; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : CALPHAD (CALculation of PHAse Diagrams) denotes the methodology used to assess thermodynamic data based on experiments as well as on first principles calculations. Essential for this method is the coupling of phase diagram and thermodynamic properties. LÄS MER