The main indicators of heat transfer oil include viscosity, acid value, residual carbon, flash point, etc. These indicators are crucial for evaluating the quality and safety of heat transfer oil. The following is a detailed explanation of these indicators and their importance:

Viscosity

·Viscosity is an indicator of the flowability of thermal oil, which reflects the degree of thinness and flowability of thermal oil under specified conditions. The lower the viscosity, the better the pumping performance and the lower the power consumption. The change in viscosity can reflect the degree of oxidation and deterioration of the heat transfer oil.

Acid value

·Acid value refers to the total amount of acidic substances in oil products, which have a certain corrosive effect on equipment, especially in the presence of water. The acidity level can reflect the degree of oil oxidation and is an important indicator for oil change.

Residual charcoal

·Residual carbon is an important indicator for determining the properties and refining depth of lubricating oil. The smaller the residual carbon value, the higher the degree of refinement and quality of the oil product. The formation of residual carbon is related to the oxidation and polymerization of thermal oil, and excessively high residual carbon values can cause pipeline blockage and equipment damage.

flash point

·The flash point indicates the safety of the oil at high temperatures. The higher the flash point, the higher the safety of the oil during use. The flash point of different types of thermal oil is between 190-200 degrees Celsius, and a closed flash point greater than 100 degrees Celsius is sufficient.

Maintenance and replacement of thermal oil

·In order to reduce the formation of residual carbon in thermal oil, measures such as selecting low residual carbon trend thermal oil varieties, controlling the use temperature and time, regularly cleaning and maintaining the system, and strengthening management and monitoring can be taken.

·When the viscosity, acid value, or residual carbon value of the heat transfer oil exceeds the allowable quality indicators specified by national standards, consideration should be given to replacing the heat transfer oil to ensure the safe operation and efficiency of the system.

When choosing a suitable heat transfer oil, factors such as viscosity, acid value, residual carbon, and flash point should be considered to ensure that the performance of the heat transfer oil meets the requirements for use. At the same time, regular cleaning and maintenance of the system should be carried out to extend the service life of the heat transfer oil and improve the efficiency of the system.

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