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Engineering

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If a dryer is designed to operate with an electric power consumption of Pelec = 900 W and to heat air from an ambient temperature of Ti = 20Â°C to a discharge temperature of To = 45Â°C, at what volumetric flow rate âˆ€Ì‡ should the fan operate? Heat loss from the casing to the ambient air and the surroundings may be neglected. If the duct has a diameter of D= 50 mm, what is the discharge velocity Vo of the air? The density and specific heat of the air may be approximated as rho = 1.10 kg/m3 and cp= 1007 J/kgÂ·K, respectively.

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