Authors: A.E. Krivenko, Q.K. Giang

Title of the article: Study of the influence of ambient temperature on the intensity of heat radiation from a hydroline in a hydraulic system of a mining hydraulic excavator

Year: 2020, Issue: 5, Pages: 39-44

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 621.22

DOI: 10.26730/1816-4528-2020-5-39-44

Abstract: The majority of mining hydraulic excavators in the Republic of Vietnam is the equipment purchased on the secondary market. The climatic performance of these machines is designed for countries with temperate and cold climates. Therefore, scientifically based modernization of hydraulic systems to ensure reliable long-term operation of all hydraulic equipment becomes an urgent task. Based on the thermodynamic theory and support of the Matlab-Simulink 7.04 software, the authors considered the process of heat exchange of the working fluid of a hydraulic drive with the environment through the wall of the hydraulic line of a mining hydraulic excavator, built a mathematical model and analyzed the effect of ambient temperature on the intensity of heat transfer of the working fluid in hydraulic lines of the hydraulic system of mining excavators when operating at elevated ambient temperatures.

Key words: mining hydraulic excavator heat transfer free convection forced convection heat radiation working fluid hydraulic line hydraulic system

Receiving date: 12.10.2020

Publication date: 23.12.2020

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