Heat Transfer
Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low

Hardness
All of these
Dissolved soilds content
Suspended solids content

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Heat Transfer
Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the

Constant temperature equal to that of the base
Surrounding temperature
Average temperature of the fin
Temperature of the fin end

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