Question

why thermic fluid oil is kept under nitrogen pressure​

Answer 1

Answer:

Nitrogen provides a barrier between atmospheric air and the heated fluid in the expansion tank. ... This prevents the entrance of air, which could react with the heat-transfer fluid to oxidize the oil, generate moisture resulting in condensation within the expansion tank, and/or cause tank corrosion.

Answer 2

Explanation:

this is the answer I got it from Google

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