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Mathematical Problems in Engineering
Volume 2017, Article ID 3254631, 9 pages
https://doi.org/10.1155/2017/3254631
Research Article

Research on the Heating of Deicing Fluid in a New Reshaped Coiled Tube

College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China

Correspondence should be addressed to Mengli Wu; moc.qq@4002lmuw

Received 19 October 2017; Accepted 7 December 2017; Published 31 December 2017

Academic Editor: Sergey A. Suslov

Copyright © 2017 Mengli Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aircraft ground deicing operation is significant to ensure civil flight safety in winter. Helically coiled tube is the important heat exchanger in Chinese deicing fluid heating system. In order to improve the deicing efficiency, the research focuses on heat transfer enhancement of deicing fluid in the tube. Based on the field synergy principle, a new reshaped tube (TCHC) is designed by ring-rib convex on the inner wall. Deicing fluid is high viscosity ethylene-glycol-based mixture. Because of the power function relation between high viscosity and temperature, viscosity has a negative influence on heat transfer. The number of ring-ribs and inlet velocity are two key parameters to the heat transfer performance. For both water and ethylene glycol, the outlet temperature rises when the number of ring-ribs increases to a certain limit. However, the increasing of velocity reduces heating time, which results in lower outlet temperature. The heating experiment of the original tube is conducted. The error between experiment and simulation is less than 5%. The outlet temperature of TCHC increases by 3.76%. As a result, TCHC efficiently promotes the coordination of velocity and temperature fields by changing the velocity field. TCHC has enhanced heat transfer of high viscosity deicing fluid.