Tag: heat exchanger failure

Heat Exchanger Failure #3 – Air Flow.

How can air flow cause a heat exchanger to fail? Too much airflow causes the heat exchanger to run cool causing condensation to form inside, and if you read the previous articles you know what that means.   (If you

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Nothing says winter has arrived like a failed heat exchanger…- Part 2; the RAT.

How does low RAT kill a heat exchanger? It cools the heat exchanger, in-turn causing the flue gas temperature to drop below its dew point.

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Nothing says winter has arrived like a failed heat exchanger…

Unfortunately heat exchangers are like everything else in our industry; few die of natural cause, most are murdered.

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Heat Exchanger Failure #3 – Low RAT.

In part 2 we told you that over-sizing is the number one killer of gas heat exchangers, so what’s number two? The RAT! No, not the four legged, scurrying around vacant warehouse type. RAT as in Return-Air-Temperature, or more specifically,

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