DEVELOPMENT OF A HEATING SYSTEM FOR HOLLOW SLEEPERS CONTAINING POINTS POSITIONING SYSTEMS

3rd International Conference on Road and Rail Infrastructure (CETRA 2014)

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Title DEVELOPMENT OF A HEATING SYSTEM FOR HOLLOW SLEEPERS CONTAINING POINTS POSITIONING SYSTEMS
 
Creator Benjamin Kaufmann; Technische Universität Dresden, Institute of Electrical Power Systems and High Voltage Engineering
Franz Kurzweil
Julian Heger
Robert Adam
Steffen Grossmann
 
Subject heating system, points, hollow sleeper, thermal network method, heat transfer, temperature rise
 
Description In winter, malfunctions of points on high speed routes can occur due to driving snow and ice. Existing heating systems, used to increase the availability of points positioning systems contained in hollow sleepers, cannot guarantee their operation under harsh environmental conditions. An optimized heating system is drafted using computational and experimental methods. The impacts of various designs of heating systems on the temperature profile at
a positioning system are assessed using the thermal network method. A thermal network of the hollow sleeper and the positioning system equipped with an existing heating system is compiled and verified with experiments. The experimental verification is required to minimize
the uncertainty of computed temperature profiles resulting from the uncertainty of flow and material parameters in the thermal network model. The efficiency of differently designed heating systems is calculated from computed temperature profiles of the points positioning system. A design with allocated heating elements is investigated experimentally in order to verify the computational results of that design. The temperature rise achieved with the optimized heating system is significantly higher than the one achieved with the original system, while the admissible temperatures are not exceeded.
 
Publisher CETRA 2014
 
Contributor ÖBB
 
Date 2017-02-28 16:46:38
 
Type Peer-reviewed Paper
 
Identifier http://master.grad.hr/cetra/ocs/index.php/cetra3/cetra2014/paper/view/434
 
Source CETRA 2014; 3rd International Conference on Road and Rail Infrastructure
 
Language en
 
Rights <p>Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference. <br /> <strong>b)</strong> Submitted full papers will be published in the book of proceedings "Road and Rail Infrastructure II" as well as in digital form (on a CD). Conference organiser is allowed to publish author's names, institution and country as well as the paper abstract on the conference web site.</p>
 

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