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Appl. Sci. 2017, 7(3), 231; doi:10.3390/app7030231

Heat Flow Characteristics of a Newly-Designed Cooling System with Multi-Fans and Thermal Baffle in the Wheel Loader

1
Department of Mechanical and Electrical Engineering of Xiamen University, No. 422 Siming South Road, Xiamen 361005, Fujian, China
2
Xiamen XGMA Machinery Co. Ltd., No. 668 Xiagong Machinery Industrial Park, Guankou Town, Xiamen 361023, Fujian, China
*
Author to whom correspondence should be addressed.
Academic Editors: Xianchang Li and Luisa F. Cabeza
Received: 19 December 2016 / Revised: 26 January 2017 / Accepted: 15 February 2017 / Published: 1 March 2017
(This article belongs to the Special Issue Advances in Thermal System Analysis and Optimization)
View Full-Text   |   Download PDF [7727 KB, uploaded 1 March 2017]   |  

Abstract

In the traditional cooling case, there is usually one fan in charge of heat transfer and airflow for all radiators. However, this seems to be inappropriate, or even insufficient, for modern construction machinery, as its overall heat flow density is increasing but thermal distribution is becoming uneven. In order to ensure that the machine works in a better condition, this paper employs a new cooling system with multiple fans and an independent cooling region. Based on the thermal flow and performance requirements, seven fans are divided into three groups. The independent cooling region is segregated from the engine region by a thermal baffle to avoid heat flowing into the engine region and inducing an overheat phenomenon. The experiment validates the efficiency of the new cooling system and accuracy of simulation. After validation, the simulation then analyzes heat transfer and flow characteristics of the cooling system, changing with different cross-sections in different axis directions, as well as different distances of the fan central axes. Finally, thermal baffles are set among the fan groups and provided a better cooling effect. The research realizes a multi-fan scheme with an independent cooling region in a wheel loader, which is a new, but high-efficiency, cooling system and will lead to a new change of various configurations and project designs in future construction machinery. View Full-Text
Keywords: multi fans; independent cooling region; cooling system; construction machinery; heat transfer multi fans; independent cooling region; cooling system; construction machinery; heat transfer
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MDPI and ACS Style

Liao, Y.; Zhuo, J.; Zhang, Y.; Guan, H.; Huang, H.; Cai, H. Heat Flow Characteristics of a Newly-Designed Cooling System with Multi-Fans and Thermal Baffle in the Wheel Loader. Appl. Sci. 2017, 7, 231.

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