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Heat Transfer

Q1: Steam consumption in kg/hr in case of an evaporator is given by (where, C & E are capacity the economy of the evaporator respectively)

A C/E

B E/C

C CE

D

ANS:A - C/E

The correct formula for steam consumption in kg/hr in case of an evaporator is: C/E Explanation:

  • C: Capacity of the evaporator, typically measured in kg/hr. It represents the amount of water that needs to be evaporated per unit of time.
  • E: Economy of the evaporator, which is the ratio of the amount of water evaporated per unit of steam used. Economy is a dimensionless quantity.
The steam consumption is directly proportional to the capacity of the evaporator and inversely proportional to its economy. Therefore, the formula for steam consumption is the capacity divided by the economy, which is represented as C/E.



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