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QUESTION
Air (cp = 0.001005 kJ/gC) at 100 kPa and 15C is warmed to 35C at the same pressure by a 110 V electric resistance heater. If the flow rate of the air...
Air (cp = 0.001005 kJ/g°C) at 100 kPa and 15°C is warmed to 35°C at the same pressure by a 110 V electric resistance heater. If the flow rate of the air is 0.4 m^3 /s, how much current does the heater required? What if the resistive heating is only 96% efficient?
