Question: Problem 4 - A 2 kW electrical heater (K = 12 W/m.K)is used to heat a gas at an average temperature of 40 C

Problem 4 - A 2 kW electrical heater (K = 12 W/m.K)is

Problem 4 - A 2 kW electrical heater (K = 12 W/m.K)is used to heat a gas at an average temperature of 40 C as shown. The heater is 3 mm thick, 20 cm wide and 50 cm long. The heater is covered by a 5 mm stainless steel sheet (K= 15.1 W/m.K). Back of the heater is fully insulated. Plate A - What is the rate of heat transfer to air? B-What are temperatures of the surfaces of steel plate? C- What is the maximum temperature of the heater? g42> 40E 3.8. Elect heater

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