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SR79
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Join Date: Jul 2011
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N2 in CT

08/18/2011 8:53 AM

For a dead tank type CT the top of oil is filled with N2 gas. What is the use of this N2 gas?
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PWSlack
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#1

Re: N2 in CT

08/18/2011 9:02 AM

As nitrogen is inert, the use of it could be said to be prevention of chemical reactions.

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electricalexpert65
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#2

Re: N2 in CT

08/18/2011 10:45 AM

Due to heating & cooling cycles inside the tank, the oil might expand & contract. While such contraction, if no inert gas is present, it might breathe-in atomospheric air, which might lead to oxidation of the oil and thus deteriorating its properties. Nitogen, which acts as a cushion for such breathing cycles, being inert, would not react with oil and decompose it.
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