Theoretical study of heat transfer in hydraulic tanks of forestry machines

Abstract

Severe weather conditions have a significant impact on the operation of forestry machines equipped with hydraulic equipment. Research has shown that 75% of the vehicle fleet operates in conditions of sub-zero temperatures, strong winds, rain and snow, and reduced daylight hours for 7 to 9 months of the year.

The reduced thermal operating conditions of hydraulic systems in the Far North (Komi Republic) are a characteristic feature of the operation of modern forestry machines. Difficulties in ensuring optimal thermal conditions and the condition of the main components and assemblies of the machine and, especially, the hydraulic system lead to increased wear of parts, reduced service life and, accordingly, their more frequent replacement [1].

The accumulated experience in operating hydraulic systems allows us to say that the performance of hydraulic systems is directly dependent on the thermal load of the elements of the entire system [2]. The operation of machines, mechanisms, components and systems in the Far North proceeds under rather severe operating conditions [3].

The study of heat transfer in hydraulic tanks of forestry machines in the Far North is an urgent task related to optimizing the operation of these machines in extreme climatic conditions. The Far North is characterized by low temperatures, which can lead to freezing of the working fluid in hydraulic systems and a decrease in the efficiency of equipment.

The purpose of this study is to study heat exchange processes in hydraulic tanks of forestry machines in the Far North and develop recommendations for optimizing the cooling system to prevent freezing of the working fluid.