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Engineering, 15.11.2019 07:31 texas101st78

Atmospheric air is in parallel flow (u 15 m/s, t 15 c) over a flat heater surface that is to be maintained at a temperature of 140 c. the heater surface area is 0.25 m2 , and the airflow is known to induce a drag force of 0.25 n on the heater. what is the electrical power needed to maintain the prescribed surface temperature?

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