A circular plate of 500-mm diameter is maintained at T₁ = 600 K and is positioned coaxial to a conical shape. The back side of the cone is well insulated. The plate and the cone, whose surfaces are black, are located in a large, evacuated enclosure whose walls are at 300 K.

(a) What is the temperature of the conical surface, T₂?

(b) What is the electrical power that would be required to maintain the circular plate at 600K?

Transcribed Image Text:

Cone with insulated back side Surroundings T- 300 K L= 500 mm -D = 500 mm- T, = 600 K Plate with electrical heater