The purpose of this study is to select the best technologies for the environmental control subsystem (ECS) for interior heating and cooling in electric and hybrid vehicles. The best technology must be selected from technologies that are available in the near term. The selected technology will serve as a basis on which development of a prototype ECS could start immediately. The technology selected as best ECS for the electric vehicle is the combination of a combustion heater and gasoline engine (Otto cycle) driven vapor compression air conditioner. All of the major ECS components, i.e., the combustion heater, the small gasoline engine, and the vapor compression air conditioner are commercially available. These technologies have good cost and performance characteristics. The cost for this best ECS is relatively close to the cost of current ECS's. At the same time, its effect on the vehicle's propulsion battery is minimal and the ECS size and weight do not have significant impact on the vehicle's range. The required technology also minimizes risk for the vehicle manufacturer because little new capital investment will be needed to produce the ECS. Since electric vehicles are likely to be in limited production for several years, the technology is appropriate for the market size. (ERA citation 06:005034)

  • Corporate Authors:

    TRW Systems Group

    Energy Systems Planning Division, Westgate Research Park
    McLean, VA  United States  22101

    Department of Energy

    1000 Independence Avenue, SW
    Washington, DC  United States  20585
  • Authors:
    • Heitner, K L
  • Publication Date: 1980-12-4

Media Info

  • Pagination: 124 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00337778
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Contract Numbers: NAS-7-100-955683
  • Files: TRIS
  • Created Date: Aug 15 1981 12:00AM