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In a fan-duct system, when the air temperature was 27C, the fan speed was 250 rpm and the mass flow rate of air was

In a fan-duct system, when the air temperature was 27C, the fan speed was 250 rpm and the mass flow rate of

In a fan-duct system, when the air temperature was 27C, the fan speed was 250 rpm and the mass flow rate of air was 5 kg/s. The temperature of the air is to be raised to 52C with new operating conditions of the system. If the static pressure increase is kept constant, calculate the new (i) fan speed (rpm) and (ii) air mass flow rate (kg/s). (10 marks)

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