Pressurised systems
Hydrocarbon or polydimethylsiloxane-based fluids (silicone oil) are used for particularly high temperatures.
There are a large number of products, some of which differ greatly in their thermal and oxidative stability and maximum bulk and film temperature, as well as in their safety and environment-related properties and thermodynamic material data, such as viscosity and boiling point.
“Pressurised” systems must be used if the boiling point of a heat transfer fluid is below the maximum bulk temperature.
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