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Radiation-:-Exchange-between-Surfaces

A ring (E = 0.85) of 8 cm inner and 16 cm outer diameter is placed in a horizontal plane. A small element (E = 0.7) of 1 cm2 is placed concentrically 8 cm vertically below center of ring. The temperature of ring is 800 K and that of small area is 400 K. Find radiant heat gain by small ring


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The net rate at which the radiation leaves the surface is given by

A ring (E = 0.85) of 8 cm inner and 16 cm outer diameter is placed in a horizontal plane. A small element (E = 0.7) of 1 cm2 is placed concentrically 8 cm vertically below center of ring. The temperature of ring is 800 K and that of small area is 400 K. Find radiant heat gain by small ring

Consider the above problem, if temperature difference is doubled by raising the temperature 480 K to 540 K, then how this heat flux will be affected?

A ring (E = 0.85) of 8 cm inner and 16 cm outer diameter is placed in a horizontal plane. A small element (E = 0.7) of 1 cm2 is placed concentrically 8 cm vertically below the center of the ring. The temperature of the ring is 800 K and that of small area is 400 K. Find the radiant heat gain by the small ring

Radiation : Exchange between Surfaces

Heat-Transfer