Heat Transfer
Sensible heat of hot industrial flue gases can not be recovered by a/an

None of these
Regenerator
Economiser
Ceramic recuperator

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Heat Transfer
In a shell and tube heat exchanger,

The relationship is not generalised
The temperature drops in the two fluids and the wall are proportional to individual resistances
There is no relationship between temperature drop and resistance
The temperature drop is inversely proportional to the resistance across which the drop occurs

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