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Selected Fuel Cells for Cogeneration CHP Processes

  • I. Pilatowsky
  • R.J. Romero
  • C.A. Isaza
  • S.A. Gamboa
  • P.J. Sebastian
  • W. Rivera
Chapter
  • 1.1k Downloads
Part of the Green Energy and Technology book series (GREEN)

Abstract

Before going into the details of cogeneration combined heat and power (CHP) processes, it is necessary to establish the operation principles and performance characteristics of the most common fuel cells for consideration in CHP processes. According to the phenomena governing the performance of fuel cells, it is worth noting that fuel cells are electrochemical energy conversion devices, where redox reactions occur spontaneously and the fuel and oxidant are consumed, and the electrochemical energy is transformed into electricity to produce work.

The thermodynamic reversible potentials and over-potential losses are the principal factors that control the net efficiency to convert chemical energy to electrical energy.

The fuel cell operating conditions depend on the electrochemical nature of the electricity production. Normally, activation over-potentials predominate at low current densities and they are also controlled by mass transport over-potentials at high current densities. Thus, the application of fuel cells in CHP processes implies a more detailed knowledge of the operation of every kind of fuel cell. Therefore, in this chapter, the fundamentals of the four typical fuel cells considered for CHP applications are explained, taking electrochemical operation principles and the consequent heat and electricity production into consideration. Generally, fuel cell classification is according to the type of electrolyte used and the operating temperatures.

Keywords

Fuel Cell Proton Exchange Membrane Fuel Cell Direct Methanol Fuel Cell Membrane Electrode Assembly Bipolar Plate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag London Limited 2011

Authors and Affiliations

  • I. Pilatowsky
    • 1
  • R.J. Romero
    • 2
  • C.A. Isaza
    • 3
  • S.A. Gamboa
    • 1
  • P.J. Sebastian
    • 1
  • W. Rivera
    • 1
  1. 1.Centro de Investigación en EnergíaUniversidad Nacional Autónoma de MéxicoTemixcoMexico
  2. 2.Centro de Investigación en Ingeniería y Ciencias AplicadasUniversidad Autónoma del Estado de MorelosCuernavacaMexico
  3. 3.Instituto de Energía, Materiales y Medio Ambiente, Grupo de Energía y TermodinámicaUniversidad Pontificia BolivarianaMedellínColombia

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