Energy efficiency analysis of railway turnout heating system with a melting snow model heated by classic and contactless heating method

• Autorzy: Flis Mateusz

Identyfikatory

DOI

10.24425/aee.2019.129338

• Języki publikacji: EN

Abstrakty

EN

Maintaining railway turnout operability is crucial for ensuring railway transport safety. Electric heating of railway turnouts is a significant technical and economic issue. The classical heating is characterised by high power consumption. For this reason, research is needed to optimise the current system. This paper presents results of a numerical analysis and of experimental researches. The numerical analysis was carried out using the ANSYS software. There was conducted a numerical comparative analysis of energy loss during heating performed using two different heaters. Including the classical method and a heater thermally insulated from a rail. In the first step, heating of a working space filled with a substitute snow model was considered. The snow-covered surface area was held within the working space of the turnout. It was assumed that the snow substitute material had thermal properties approximately the same as real light snow. It was also assumed that the material is in the solid state which would not undergo a phase change. In the next step, a real snow model that included the phase change process was taken into account. The energy efficiency and heat distribution in the turnout have been analysed and compared. The experimental researches were carried out in a physical model. The results showed that the use of a contactless heater results in creating a larger area over which emitted heat affected snow in the working space. Consequently, more snow was melted around the contactless heater than the classic one. This experimental observation supported the results of the numerical analyses presented previously.

Słowa kluczowe

EN

electrical heating; enthalpy method; experimental research; melting process; railway turnouts; thermal field; heat distribution

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2019
• Tom: Vol. 68, nr 3
• Strony: 511--520
• Opis fizyczny: Bibliogr. 7 poz., rys., wz.

Twórcy

autor

Flis Mateusz

• Polish Naval Academy of the Heroes of Westerplatte 81-127 Gdynia, ul. Śmidowicza 69, Poland

Bibliografia

• [1] Flis M., An overview over the methods of snow melting in railway turnouts, Electrical Engineering, Poznan University of Technology Academic Journals (in Polish), Poznań, no. 83 (2015).
• [2] Brodowski D., Andrulonis J., Railway turnouts heating, Railway Issues (in Polish), Warsaw, no. 135 (2002).
• [3] Wołoszyn M., Jakubiuk K., Flis M., Analysis of resistive and inductive heating of railway turnouts, Przegląd Elektrotechniczny, no. 4 (2016).
• [4] Brodowski D., Railway turnouts heating – the new method. Contactless heating as a way to melt snow in the turnout faster, Technical information, Railway Institute (in Polish), Warsaw (2012).
• [5] Flis M., Wołoszyn M., Energy Efficiency Analysis of Railway Turnout Heating with a Simplified Snow Model Using Classical and Contactless Heating Method, International Interdisciplinary PhD Workshop, 8th International Interdisciplinary PhD Workshop Conference, The Conference Proceedings, IEEE Xplore Database [ISSN: 1897-0737] (2018).
• [6] Wiśniewski S., Wiśniewski T., The heat transfer, no. 4, WNT (in Polish), Warsaw, ISBN 83-204-2110-1, no. 4 (1997).
• [7] ANSYS Fluent Theory Guide, Release 15.0, ANSYS Inc., November (2013).

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).