## A flat plate of polished copper of surface emissivity 0.1 is 0.1 m long and 0.1 m wide. The plate is placed vertically, with one side heated

Question

A flat plate of polished copper of surface emissivity 0.1 is 0.1 m long and 0.1 m wide. The plate is placed vertically, with one side heated to a surface temperature of 500 K, and the other side remaining insulated. The heated side is exposed to quiescent air at 300 K and the surroundings are also at 300 K. Assume that air can be taken as an ideal gas. Estimate the heat rate from the flat plate.

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3 months 2021-09-02T15:26:45+00:00 1 Answers 3 views 0

The heat rate is

Explanation:

From the question we are told that

The surface emissivity is

The length is

The width is

The surface temperature of one side is

The temperature of the quiescent air

The temperature of the surrounding is

The heat rate from the flat plate is mathematically represented as

Where is the quiescent air Stefan-Boltzmann constant  and it value is

A is the area which is mathematically evaluated  as

substituting values

substituting values