X hits on this document

PDF document

Promising Electric Aircraft Drive Systems - page 9 / 23

54 views

0 shares

0 downloads

0 comments

9 / 23

Fuel Cell Systems - Advantages / Disadvantages

  • Proton Exchange Membrane (PEM) Fuel-cell:

    • More mature, operational in cars, high power density demonstrated

    • Need pure H2, availability and storage challenge

    • Lower operating temperature (low quality heat released) needs larger heavier heat exchanger

  • Solid Oxide Fuel-Cell (SOFC)

    • Less mature, currently low power density systems

    • 30-45 minute startup warm-up

      • >

        Battery startup operations could reduce impact

    • Can use hydrocarbon fuels

    • Efficiencies greater than 60 % for hybrid system

        • >

          Fuel-cell with gas turbine bottoming cycle

    • Higher power density needed for mobile systems

        • >

          Pathway exists to achieve higher power density but will require significant technology development EAA Electric Aircraft World Symposium 2010: Michael Dudley

9

Document info
Document views54
Page views54
Page last viewedWed Dec 07 11:35:20 UTC 2016
Pages23
Paragraphs468
Words1808

Comments