2 edition of Prevention of preferential bridge icing using heat pipes found in the catalog.
Prevention of preferential bridge icing using heat pipes
Angelo A. Ferrara
by Dept. of Transportation, Federal Highway Administration, Office of Research, for sale by the National Technical Information Service in Washington, Springfield, Va
Written in English
|Statement||Anagelo a. Ferrara and George Yenetchi.|
|Series||Report - Federal Highway Administration ; no. FHWA-RD-76-168|
|Contributions||Yenetchi, George., Grumman Aerospace Corporation., United States. Federal Highway Administration. Office of Research.|
|The Physical Object|
|Pagination||iv, 14 p. :|
|Number of Pages||14|
review results. Randomly sample using a MOE of 15% and a LOC of 80% to review bridge inspection records, including a historical review of reports, to ensure frequency in the records match the data recorded in the NBI. The sample population should include structurally deficient. if you're adding gumtex or tylose, it will harden overnight. If straight fondant, I think you'll be ok by Friday. (It depends on the humidity where you live). I'd let it dry for a day on the form you're using, then take off and let dry on it's side to get the underneath to : Amandapanda.
Heat considered as a mode of motion: being a course of twelve lectures delivered at the Royal institution of Great Britain in the season of (New York, D. Appleton & co., ), by John Tyndall (page images at HathiTrust) Heat considered as a mode of motion / (New York: D. Appleton, ), by John Tyndall (page images at HathiTrust). Transfer of heat. Conduction, convection, radiation. The ideal radiator. Blackbody. The transfer of heat from one place to another takes place in three different ways: conduction, convection and radiation. Conduction. Conduction is the flow of heat through a substance. Heat flows of its own accord through a body from a hot region to a cool region.
TRAIL BRIDGE INSPECTION BRIDGE INSPECTION PROCEDURES Objectives: Learn the different inspection methods Learn a standard procedure to conduct routine bridge inspection Learn what to look for during an inspection Bridges Inspection Methods There are three basic methods used to inspect a timber bridge. Bridge & Tunnel Inspectors’ Conference (formerly the PNW Bridge Inspectors' Conference) focuses on the safety inspections of bridges, tunnels, and other transportation structures. The purpose of the conference is to provide a forum for inspectors and managers to share information, innovations, ideas, and best practices surrounding safety.
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Prevention of preferential bridge icing using heat pipes. Washington: Federal Highway Prevention of preferential bridge icing using heat pipes book ; Springfield, Va.: Available through the National Technical Information Service, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors.
Get this from a library. Prevention of preferential bridge icing using heat pipes: Final report. [Angelo A Ferrara; George Yenetchi; Grumman Aerospace Corporation.; United States. Federal Highway Administration. Office of Research.] -- This report describes the results of a 27 month analytical and test program to investigate the use of heat pipes and renewable energy sources.
Designs are based on controlling preferential icing rather than maintaining an ice free bridge. Costs range from $24 to $55 based on prices with heating from sanitary sewer being the lowest.
I.y Words Dis"i!.,"o" s.o."'.". Heat Pipes, Earth Heat, Ground Water, Solar Energy, Preferential Icing, Bridges No restriction. The construction costs and experimental data will be used to evaluate the cost effectiveness of using a conductive concrete overlay for bridge deck deicing or anti-icing.
View Show abstract. Prevention of preferential bridge icing using heat pipes / (Washington: Dept. of Transportation, Federal Highway Administration, Office of Research ; Springfield, Va.: for sale by the National Technical Information Service, ), by Angelo A.
Ferrara, George Yenetchi, United States. Federal Highway Administration. prediction of preferential icing conditions on highway bridges. prefernential icing of bridges, i.e., the freezing of bridges before the approaches, involves the interaction of a number of vaiables such as location, weather conditions thermal properties of the bridge structure, and traffic density.
Full text of "Heat pipe design handbook, volume 1" See other formats. preferential icing be prevented. By far, the most frequent responses to bridge deck icing are the applications of salt and/or sand or other gritty material.
Salt applied to a bridge deck prior to icing can prevent preferential icing. Timing of the application of salt and sand is often problematic. Furthermore, salt is corrosive and eventually. The heat transfer characteristics of a heat pipe which is operating within the heat transport limits are given in Section HEAT PIPE OPERATION The principle of operation of a heat pipe is best described by using the simple cylindrical geometry shown in Fig.
2-I.5/5(1). The freezing wind strikes the bridge above and below and on both sides, so it's losing heat from every side. The road is only losing heat from its surface. Even while the temperature on the road surface is dropping, the heat underneath the road keeps it warm enough to prevent icing as temperatures in the atmosphere drop below freezing.
bridge deck using embedded cables, heated ﬂ u-ids, infrared heat lamps or insulation on the un-derside of the deck, have been attempted and have met with limited success. Over the past 10 years, an innovative material called “conductive concrete” has been developed and evalu-ated for bridge-deck deicing.
Conductive concrete is aFile Size: KB. Bridge management 4: inspection, maintenance, assessment and repair. pp.: ill. Good clean condition. These proceedings are from The Fourth International Conference on Bridge Management that consolidated the best and, more importantly, up-to-date research conducted in the field of bridge management.
Author interviews, book reviews, editors' picks, and more. Read it now. Enter your mobile number or email address below and we'll send you a link to download the free Kindle App. Then you can start reading Kindle books on your smartphone, tablet, or computer - no Kindle device required.
Apple. Android. Windows Phone Author: LIU PEI WEN. Heat pipes were first introduced inbut were not used till Use of the heat pipe to de-ice bridge decks using geothermal heat was demonstrated by research conducted in Wyoming, Oklahoma, West Virginia, and Japan (Nydahl et al., ; Lee et al., ).
Heat pipes A heat pipe is a closed container evacuated of all non-condensable gases. After calculating the network heat loads and therefore the required flow rates through the pipes, pipe sizing follows established methods using a correctly selected coefficient of friction.
The pressure loss (or headloss) per metre of pipe is determined using the Colebrook-White or Darcy-Weisbach equations. THERMAL EXPANSION. During the winter, heat energy is extracted from the ground and can be circulated as warm fluid through the tubing system within the bridge deck slab to prevent icing and freezing.
Heat energy can be collected in the summer through circulation tubes embedded in the concrete bridge deck and stored in the ground for use in the winter.
Thus, by using appropriate methods a bridge structure can often be successfully operated for many years in a state of controlled deterioration. The use of controlled deterioration represents a valuable tool in the protection of bridge structures and finds its logical outcome in the process of corrosion allowance.
“Comprehensive Evaluation of Bridge Anti-icing Technologies”. This report is the result of the concerted effort of several engineers and scientists at the University of Alaska Fairbanks (UAF), dedicated to evaluation of anti-icing and deicing technology for the proposed Knik Arm Bridge.
Listed below are names and roles. The purpose of this study is to explore preventing icing by using the ground as a heat source at the appropriate region. The heat energy that can be transferred from ground to surface with an. Bridge Inspection Handbook 1 1 INTRODUCTION BACKGROUND On August 29th,then U.S.
Fish and Wildlife Service (Service) Deputy Director Richard N. Smith initiated the Service ^Bridge Safety Inspection Program.
_ The stated intent of the initiative was ^ to. Movable Bridge Inspection, Evaluation, and Maintenance Manual (), pp. AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 4th ed.
(), pp. Bridge Inspectorâ s Reference Manual, FHWA NHI (), 1, pp. Bridge Scour and Stream Instability Countermeasures Experience.Established in to set national requirements regarding bridge inspection frequency, inspector qualifications, report formats, and inspection and rating procedures National Bridge Inventory (NBI) The aggregation of structure inventory and appraisal data collected by each state to fulfill the requirements of NBIS.Studying The Reliability of Bridge Inspection by Brent M.
Phares, Dennis D. Rolander, Benjamin A. Graybeal, and Glenn A. Washer. Inthe Silver Bridge over the Ohio River collapsed during rush hour, killing 46 people. This catastrophic failure was found to have been initiated by fracture of an eyebar at a pin connection.