THE USE OF HEAT PIPES TO PREVENT ICE FORMATION ON HIGHWAY BRIDGE DECKS

Sufficient heat can be transported from the surrounding ground to a bridge deck by heat pipes to both reduce the number of freeze-thaw cycles and to reduce the time during which the surface is below freezing. In a computer model of the thermal response of a bridge during a sample month, the use of heat pipes spaced six inches apart reduced the number of freeze-thaw cycles by 58% and the time that the surface was below freezing by 87%. While even higher performance is possible, economic and structural constraints will certainly preclude the elimination of all freezing. A screen covered groove heat pipe using ammonia as a working fluid appears to yield the best performance. Computer models are presented to analyse the performance of such heat pipes and to predict the thermal response of a highway bridge with heat pipes to either idealized or actual meteorological conditions. Recommendations are made for further work. /Author/

  • Corporate Authors:

    University of Oklahoma, Norman

    Research Institute
    Norman, OK  USA  73019

    Oklahoma Department of Highways

    200 NE 21st Street
    Oklahoma City, OK  USA  73105
  • Authors:
    • Witwer, J G
    • Sommers, D W
  • Publication Date: 0

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 58 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00159608
  • Record Type: Publication
  • Report/Paper Numbers: Project 73-05-2
  • Files: TRIS, STATEDOT
  • Created Date: Nov 23 1977 12:00AM