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Mobiltherm 600 Series
Heat transfer Oils
Product Description
Mobiltherm heat transfer oils are high performance products intended for use in closed indirect heating installations. They are formulated from highly refined base stocks that are resistant to thermal cracking and chemical oxidation. They have good heat transfer efficiency and their viscosities are such that they can be pumped readily at both start-up and operating temperatures. The flash points of these oils will not decrease significantly in service because of their resistance to thermal cracking at the operating temperatures for which they are recommended. The Mobiltherm products are very thermally stable and are capable of an extremely long service life without deposit formation or viscosity increase. They demonstrate specific heats and thermal conductivities that provide more rapid heat dissipation. Mobiltherm heat transfer oils are recommended for use in both closed and open, cold-oil sealed, indirect heating and cooling systems in all kinds of industrial processes.
Features and Benefits
Mobiltherm oils are important member of the Mobil brand of specialty fluids that have gained a reputation for performance and reliability, even in severe applications. Application of the most modern refining techniques is a key factor in the excellent features of these products.
Mobiltherm 603 and 605 offer the following benefits:
| Features | Advantages and Potential Benefits |
|---|---|
| High resistance to thermal cracking and decomposition | Freedom from sludge and coke deposits and minimum interference with heat transfer capability and minimised maintenance needs |
| Excellent thermal properties | High heat transfer rates and improved operating efficiency and lower operating costs |
| Good thermal and oxidative stability | Long trouble free service life and reduced downtime |
| Good low temperature fluidity | Easy starting of cold systems |
Applications
Application Considerations: Mobiltherm heat transfer oils should not be mixed with other oils since this may impair the excellent thermal and oxidation stability of the Mobiltherm oils, cause a change in other properties, and complicate the interpretation of analyses made to determine the oil's useful life. If the oils are used above their recommended maximum temperatures, vapor lock may result unless the system is designed to operate at the higher temperature by pressurising with an inert gas such as nitrogen. However, at higher temperatures, fluid life will be shortened because the rate of thermal degradation increases markedly as temperatures rise above the recommended limit. In well-designed systems the temperature of the oil film surrounding the heating element should be about 15
