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Heat Transfer

Q1: Loss of heat from untagged steam pipe to the ambient air is by

A conduction

B convection

C radiation

D all (a), (b) & (c)

ANS:D - all (a), (b) & (c)

The loss of heat from an untagged steam pipe to the ambient air can occur through all of the following mechanisms:

  • Conduction: Heat transfer through the material of the pipe itself.
  • Convection: Heat transfer due to the movement of fluid (air) over the surface of the pipe, carrying away heat.
  • Radiation: Heat transfer through electromagnetic waves emitted by the surface of the pipe.
Therefore, the correct option is: all (a), (b), & (c).



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