Based on thermal stability regulations
• Emphasize that Armcoltherm heat transfer oil has good thermal stability and can maintain a long service life at the recommended maximum operating temperature.
Armcoltherm 680 can be used for a long time in normal operation under the condition of the maximum allowable film temperature of 350℃ to ensure stable heat transfer of the system.
Associated with oxidation stability
• Point out that its heat transfer oil has excellent oxidation stability. By adding special antioxidants, etc., under reasonable system design and operating conditions, it can effectively delay the oxidation process and extend the service life.
Generally speaking, in an aerobic environment and when the temperature does not exceed a specific value (such as 150℃), it can maintain good performance for a long time (such as more than 5 years).
Determine based on performance indicators
• Define the service life by the change of specific performance indicators. For example, it is stipulated that when the acid value of the heat transfer oil exceeds 0.5mgKOH/g, the viscosity changes by more than ±15% of the initial value, and the flash point decreases by more than 20℃.
It is considered that the service life of the heat transfer oil may be nearing the end and needs to be replaced or processed.
Combined with actual application instructions
• According to different application fields and working conditions, a rough reference for service life is given. In conventional industrial heating systems, if the operation is standardized and the system is well maintained.
The service life of Armcoltherm heat transfer oil can generally reach more than 5 years; in some special high temperature, high load or special medium environments, the service life may be shortened accordingly.
