What can I do about the contamination?

The conventional method to remove – at least a part of the contamination – from the thermal oil system is the partial replacement of the used thermal oil. In this case, part of the oil is replaced by fresh oil, whereby a certain percentage of the particles in the oil will be discharged out of the system. However, this solution does not replace the filtration and is only a short-term solution, mostly in case of an emergency. Already “cracked” or not discharged particles further remain in the system. In addition, in some circumstances, the oil change is associated with a standstill of the system and – depending on the oil used – it causes high running costs.

A fine filter with a mesh size smaller than the standard strainer , e.g. 1000-1600 μm, can remove most particles from the system. For comparison: The standard mesh size of the NESS Fine filter stations is 15 μm, i.e. only a fraction of the normal strainer. With this, the particles will be filtered out excellently. Correctly intergraded, this solution has the advantage that it can be carried out during the running operation of the system.