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

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 un...

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Bibliographic Details
Published in:Applied sciences 2017-03, Vol.7 (3), p.231
Main Authors: Liao, Yidai, Zhuo, Jiwen, Zhang, Yinliang, Guan, Honger, Huang, Heting, Cai, Huikun
Format: Article
Language:English
Subjects:
Air flow
Baffles
Charge transfer
Construction
Construction equipment
construction machinery
Cooling
Cooling effects
cooling system
Cooling systems
Flow characteristics
Heat flow
Heat transfer
Heat transmission
independent cooling region
Loaders
Machinery
multi fans
Radiators
Simulation
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Summary: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.
ISSN:2076-3417
2076-3417
DOI:10.3390/app7030231