(Answered) Question a 300-w cylindrical resistance heater is 075 m

Engineering

Question: A 300-W cylindrical resistance heater is 0.75 m long and 0.5 cm in diameter. The resistance wire is placed horizontally in a fluid at 20° C. Determine the outer surface temperature of the resistance wire in steady operation if the fluid is

(a) air and

(b) water.

Ignore any heat transfer by radiation. Use properties at 500°C for air and 40° C for water.

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