Search for dissertations about: "exergy"

Showing result 16 - 20 of 54 swedish dissertations containing the word exergy.

  2. 16. Models for coupled heat and mass transfer processes in buildings : Applications to Achieve Low Exergy Room Conditioning

    Author : Dietrich Schmidt; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Coupled Heat Mass Transfer; Building engineering; Byggnadsteknik;

    Abstract : .... READ MORE

  4. 17. Design and evaluation of stationary polymer electrolyte fuel cell systems

    Author : Cecilia Wallmark; KTH; []
    Keywords : Small-scale; stationary; fuel cell system; polymer electrolyte fuel cell; PEFC system; reformer; thermodynamic modelling; pinch technology; exergy analyses; system configuration; test facility; experiments; application; simulation; installation; ener;

    Abstract : 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. READ MORE

  5. 18. Computational Fluid Dynamics Modeling of Biomass Gasification in Fixed-bed Reactors Using Highly Preheated Agent

    Author : Yueshi Wu; Weihong Yang; Jan Stasiek; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomass; high temperature agent gasification; CFD modeling; exergy efficiency; Energy Technology; Energiteknik;

    Abstract : Biomass gasification is considered to be one of the most promising energy recovery technologies for the widespread utilization of biomass. Mathematical models have been developed to understand the gasification process inside gasifiers. READ MORE

  6. 19. Investigation of Vapor Ejectors in Heat Driven Ejector Refrigeration Systems

    Author : Jianyong Chen; Björn Palm; Hans Havtun; Ian W. Eames; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vEjector Refrigeration System; Ejector; Efficiency; Performance; Exergy Analysis; Experiment.; Energy Technology; Energiteknik;

    Abstract : Refrigeration systems, air-conditioning units and heat pumps have been recognized as indispensable machines in human life, and are used for e.g. food storage, provision of thermal comfort. These machines are dominated by the vapor compression refrigeration system and consume a large percentage of world-wide electricity output. READ MORE

  7. 20. Improving Ship Energy Efficiency through a Systems Perspective

    Author : Francesco Baldi; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modelling; shipping; exergy analysis; energy systems; energy efficiency; energy analysis; systems analysis;

    Abstract : The last years have been particularly challenging for the shipping industry. Fuel prices have increased to levels only seen during the oil crisis in the 70's, and environmental regulations have grown much stricter than in the past. Climate change, at a global level, is going to become a major threat to society. READ MORE