The objective of this contract is to develop and demonstrate a high performance, vacuum insulation which is capable of withstanding 15 psi plus battery loading with low compression operating in the 660 to 840 exp 0 F range. The developed insulation would allow construction of rectangular, lightweight and low-cost, vacuum-insulated enclosures for electric vehicles using Na/S or Li/MS batteries. The goals of the program are to develop a vacuum insulation with the following properties: thermal conductivity 140 x 10 exp -5 Btu/h-ft exp 0 F, density, 18 lbs/ft exp 3 and compression 10% from 0 to 15 psi load. A new milestone in high-temperature, load-bearing, preformed insulation was achieved. The two insulation systems demonstrated to-date have exceeded the goals of the program. Pegged Multi-Foil system has a measured conductivity of 100 x 10 exp -5 Btu/h-ft exp 0 F between 840 and 75 exp 0 F, density 11 lbs/ft exp 3 and compression of 10%. The second system which exceeded the goals of the program is a Linde Multi-Foil inslation with discrete load-carrying support areas. It has a measured thermal conductivity of 95 x 10 exp -5 Btu/h-ft exp 0 F, a density of 15 lbs/ft exp 3 and a compression of 21%. A third inslation is a continuous support, load-bearing board system. Although the thermal conductivity and density are above the goal of the program, the system is very practical and may be used in specialized applications; i.e., forklift trucks. The best load-bearing board insulation system developed to-date has a conductivity of 224 x 10 exp -5 Btu/hr-ft exp 0 F, a density of 22 lbs/ft exp 3 and a compression of 7%. It is believed that the new insulation systems need further development in order to establish their long-term stability, handleability and cost-effective production.

  • Corporate Authors:

    Union Carbide Corporation

    Linde Division
    Tonawanda, NY  United States 

    Department of Energy

    1000 Independence Avenue, SW
    Washington, DC  United States  20585
  • Publication Date: 1979-12

Media Info

  • Pagination: 114 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00326941
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Contract Numbers: EM-78-C-01-5160
  • Files: TRIS
  • Created Date: Feb 18 1981 12:00AM