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Question

In experiment of convection heat transfer, water inside the pipe can be convectively heated with higher rate by
  1. Increasing thermal conductivity of container
  2. increasing heat intensity
  3. Using external force to increase the circulation speed
  4. all of the above

A
all of the above
B
increasing heat intensity
C
Using external force to increase the circulation speed
D
Increasing thermal conductivity of container
Solution
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  • By increasing the thermal conductivity of container; we can say that container will absorb more heat and transfer more heat to water.
  • By increasing heat intensity means more heat energy is transferred or given per unit area per unit time; more the heat will be given, more the convection will take place at higher rate.
  • Using external force to increase the circulation speed; i.e. forced convection. And since we know that forced convection is more efficient than normal convection. So, convection will take place at relatively higher rate.

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