GATE ME · 2022 · ME
Question 64: Heat-Transfer
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Question 64
MENAT2 marksNeeds review
Consider a solid slab (thermal conductivity,
W·m
·K
) with thickness 0.2 m and of infinite extent in the other two directions as shown in the figure. Surface 2, at 300 K, is exposed to a fluid flow at a free stream temperature (
) of 293 K, with a convective heat transfer coefficient (
) of 100 W·m
·K
. Surface 2 is opaque, diffuse and gray with an emissivity (
) of 0.5 and exchanges heat by radiation with very large surroundings at 0 K. The radiation heat transfer inside the solid slab is neglected. The Stefan-Boltzmann constant is
W·m
·K
. The temperature
of Surface 1 of the slab, under steady-state conditions, is ________ K (round off to the nearest integer). 
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2022ME
GATE ME 2022 · Paper 1
Mechanical Engineering · Original paper archive
- Section
- Mechanical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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