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When two fluids of the heat exchanger are separated by a plane wall, the thermal resistance comprises
(i) Convection resistance due to the fluid film at the inside surface
(ii) Conduction resistance
(iii) Convection resistance due to the fluid film at the outside surface
Identify the correct option
(i) Convection resistance due to the fluid film at the inside surface
(ii) Conduction resistance
(iii) Convection resistance due to the fluid film at the outside surface
Identify the correct option
- a)1 and 2
- b)1, 2 and 3
- c)2 and 3
- d)1 and 3
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
When two fluids of the heat exchanger are separated by a plane wall, t...
It consists of all the above i.e. convection resistance and conduction resistance.
Most Upvoted Answer
When two fluids of the heat exchanger are separated by a plane wall, t...
Explanation:
When two fluids of the heat exchanger are separated by a plane wall, the thermal resistance comprises three components:
1. Convection resistance due to the fluid film at the inside surface
- This is the resistance to heat transfer from the fluid to the wall. It is controlled by the velocity and temperature of the fluid, as well as the thermal properties of the fluid and the wall.
2. Conduction resistance
- This is the resistance to heat transfer through the wall itself. It is controlled by the thickness and thermal conductivity of the wall.
3. Convection resistance due to the fluid film at the outside surface
- This is the resistance to heat transfer from the wall to the second fluid. It is controlled by the velocity and temperature of the second fluid, as well as the thermal properties of the fluid and the wall.
Therefore, the correct option is (B), as all three components contribute to the overall thermal resistance.
When two fluids of the heat exchanger are separated by a plane wall, the thermal resistance comprises three components:
1. Convection resistance due to the fluid film at the inside surface
- This is the resistance to heat transfer from the fluid to the wall. It is controlled by the velocity and temperature of the fluid, as well as the thermal properties of the fluid and the wall.
2. Conduction resistance
- This is the resistance to heat transfer through the wall itself. It is controlled by the thickness and thermal conductivity of the wall.
3. Convection resistance due to the fluid film at the outside surface
- This is the resistance to heat transfer from the wall to the second fluid. It is controlled by the velocity and temperature of the second fluid, as well as the thermal properties of the fluid and the wall.
Therefore, the correct option is (B), as all three components contribute to the overall thermal resistance.
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