Sökning: "PEFC system"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden PEFC system.

  1. 1. Design and evaluation of stationary polymer electrolyte fuel cell systems

    Författare :Cecilia Wallmark; KTH; []
    Nyckelord :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;

    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

  3. 2. The anode in a PEFC reformate system

    Författare :Sofia Enbäck; KTH; []
    Nyckelord :polymer electrolyte fuel cell system; anode; CO oxidation;

    Sammanfattning : Polymer electrolyte fuel cells (PEFC) constitute one ofseveral types of fuel cells that can be used to converthydrogen to electricity and heat. PEFC co-generation systemsbased on fossil fuels are on the edge of commercialisation.Biogas may be a future fuel in these kinds of systems. LÄS MER

  4. 3. MIMS - Multi Integrated Management Systems for Quality, Environment and Systematic Work Environment : A General management system, based on large Swedish companies

    Författare :Hugo Eliasson; Lars Sörqvist; Thomas Zobel; KTH; []
    Nyckelord :Management System; Integrated Management; Multi; Integration; Quality; Environment; Systematic Work Environment; ISO 9001; ISO 14001; AFS 2001:1 and OHSAS 18001;

    Sammanfattning : This thesis describes mature Multi Integrated Management System (MIMS), mainly within Swedish companies, certified against three or more certificates. Other criteria have been to have a business system, usually SAP R/3 and that the companies investigated have had more than 200 employees. LÄS MER

  5. 4. Fuel Cells and Biogas

    Författare :Lars Hedström; Per Alvfors; Peter Lund; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; air bleed; biogas; carbon dioxide; carbon monoxide; current distribution; dilution; efficiency; energy conversion; energy systems; experimental; fuel cell; fuel cell systems; PEFC; poisoning; reformate; SOFC; Chemical energy engineering; Kemisk energiteknik;

    Sammanfattning : This thesis concerns biogas-operated fuel cells. Fuel cell technology may contribute to more efficient energy use, reduce emissions and also perhaps revolutionize current energy systems. The technology is, however, still immature and has not yet been implemented as dominant in any application or niche market. LÄS MER

  7. 5. On Diffusion Transport Properties in Fuel Cell Gas Diffusion Layers Using the Lattice Boltzmann Method

    Författare :Mayken Espinoza Andaluz; Värmeöverföring; []
    Nyckelord :PEFC; lattice Boltzmann method; gas diffusion layers; porosity; Gas-phase tortuosity; permeability; inertial coefficient; diffusibility; pore-scale modeling;

    Sammanfattning : The polymer electrolyte fuel cell (PEFC) is considered as one of the most promising devices for providing efficient, clean and noiseless conversion of chemical energy to electrical energy. This device can provide electrical and thermal energy for transport, mobile and stationary applications ranging in a wide range of power requirements. LÄS MER