A circular ceramic plate that can be modeled as a blackbody is being heated by an electrical heater The plate is 30 cm in diameter and is situated in a surrounding ambient temperature of 15 deg C where the natural convection heat transfer coefficient is 12 W m 2 K If the efficiency of the electrical heater to transfer heat to the plate is 80 , determine the electric power that the heater needs to keep the surface temperature of the plate at 200 deg C Ambient 15C h 12 W m2 K Tsurr 15C T 200C Ceramic plate

Question: A circular ceramic plate that can be modeled as a blackbody is being heated by an electrical heater. The plate is 30 cm in diameter

A circular ceramic plate that can be modeled as a blackbody is being heated by an electrical heater. The plate is 30 cm in diameter and is situated in a surrounding ambient temperature of 15°C where the natural convection heat transfer coefficient is 12 W/m²ˆ™K. If the efficiency of the electrical heater to transfer heat to the plate is 80%, determine the electric power that the heater needs to keep the surface temperature of the plate at 200°C.

Ambient 15°C h= 12 W/m2.K Tsurr = 15°C T; = 200°C Ceramic plate

Ambient 15C h= 12 W/m2.K Tsurr = 15C T; = 200C Ceramic plate

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