A detailed design of a thermal energy storage (TES) system for use with the Stirling engine as an automotive power system has been developed. The gravimetric and volumetric storage densities are competitive with electric battery storage systems. The TES/Stirling engine system meets all operational requirements for a practical vehicle and can be packaged in compact-sized automobiles with minimum impact on passenger and freight volume. The TES/Stirling system is the only storage approach for direct use of combustion heat from fuel sources not suitable for direct transport and use on the vehicle. The particular concept developed in this study is also useful for a dual-mode TES/liquid fuel system in which the TES (recharged from an external energy source) is used for short-duration trips (approx. 10 miles or less) and liquid fuel carried onboard the vehicle used for long-duration trips (as in current automobiles). The dual-mode approach permits an automobile with the convenience and flexibility of current automobiles while offering the potential of 50% savings in the consumption of premium liquid fuels for automotive propulsion in the United States. Relative to the TES-only vehicle, the dual mode approach also reduces the TES cost significantly because of the much smaller TES capacity required.

  • Corporate Authors:

    Thermo Electron Engineering Corporation

    101 First Avenue
    Waltham, MA  United States  02154

    Department of Energy

    1000 Independence Avenue, SW
    Washington, DC  United States  20585
  • Authors:
    • Morgan, D T
  • Publication Date: 1979-3

Media Info

  • Pagination: 323 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00318249
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: TE-484-66-79, NASA-CR-159561
  • Contract Numbers: W-31-109-ENG-38
  • Files: TRIS
  • Created Date: Sep 16 1981 12:00AM