Performance analysis of a dual-loop cooling system for engineering vehicles

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Abstract
To improve the efficiency of heat transfer from the cooling system of non-road mobile machinery, a modification has been made to the classic cooling system. Specifically, we divide the classic cooling system into two independent cooling loops, namely, the high-temperature cooling loop and the low-temperature cooling loop. Through simulation and experimentation, the dual-loop cooling system was systematically studied, and it was found that the heat dissipation of the dual-loop cooling system was better than that of the single-loop cooling system. In comparison with the classic cooling system, the volume factor of our system increased by 49.3%, the power factor increased by 24.5%, the effective drag coefficient increased by 5.8%, and the compressed air loop length was shortened by 54.5%. In addition, the dual-loop cooling system can greatly reduce the temperature of pressurized air. The proposed new system can better meet the cooling needs of non-road mobile machinery.

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