engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Heat Transfer Conduction Heat Conduction Through Plane and Composite Walls
In a furnace made of bricks
Inside heat transfer coefficient = 35 W/m2K
Outside heat transfer coefficient = 25 W/m2K
Thermal conductivity of bricks (15 cm thick) = 0.15 W/mK
The overall heat transfer coefficient (in W/m2K) will be closer to the
1
Inside heat transfer coefficient
2
Outside heat transfer coefficient
3
Thermal conductivity of bricks
4
Heat transfer coefficient based on the thermal conductivity of the bricks alone.