PREVENTION OF PREFERENTIAL BRIDGE ICING USING HEAT PIPES
This report describes the results of a 27 month analytical and test program to investigate the use of heat pipes and renewable energy sources (specifically earth heat) to avoid the preferential freezing of highway bridge decks. Based on computer simulations of typical preferential icing events (days), a single system design is recommended for most U.S. locations. This design consists of nominal 0.5 inch heat pipes at the slab mid-plane, on 23 cm centers, connected to nominal 2 inch heat pipes in the ground via a pumped fluid loop, with 1 m of earth heat pipe provided for every 0.3 square meters of bridge deck. The report also provides preliminary assessment of the design requirements and costs of an alternative, solar collector design; it concludes that the solar collector design may offer economic advantages over the earth heat pipe system, and thus should be investigated further.
- See also report dated July 75, PB-249658.
Grumman Aerospace Corp.Bethpage, NY USA
Washington, DC USA 20590
- Ferrara, A A
- Yenetchi, G
- Publication Date: 1976-9
- Pagination: 21 p.
- TRT Terms: Bridge decks; Deicing; Energy; Heat pipes; Highway bridges; Icing; Simulation; Solar energy; Solar power generation
- Old TRIS Terms: Preferential icing
- Subject Areas: Energy; Highways; Maintenance and Preservation;
- Accession Number: 00166495
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA-RD-76-168 Exec Summ, FCP 1
- Contract Numbers: DOT-FH-11-8545
- Files: NTIS, TRIS, USDOT
- Created Date: Sep 27 1978 12:00AM