Air at 2 bar and 40°C is heated as it flows through tube of diameter 30mm at a velocity of 10 m/s. Calculate the heat transfer per unit length of the tube when wall temperature is maintained at 100° C all along length of the tube. How much would be the bulk temperature increase over one metre length of the tube ? Use the following relation : Nu = 0.023 Re8 P4 u = 20.6 x 106 N- s/m2: Pr = 0.694 c, 1.009 kJ/kg°C; k = 0.0297 kg/m°C;

Elements Of Electromagnetics
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Air at 2 bar and 40°C is heated as it flows through tube of diameter 30mm at a
velocity of 10 m/s. Calculate the heat transfer per unit length of the tube when wall temperature is
maintained at 100°C all along length of the tube. How much would be the bulk temperature increase
over one metre length of the tube ? Use the following relation :
Nu = 0.023 Re08 Pr04
u = 20.6 x 106 N- s/m?: Pr = 0.694 c, 1.009 kJ/kg°C; k = 0.0297 kg/m°C;
Transcribed Image Text:Air at 2 bar and 40°C is heated as it flows through tube of diameter 30mm at a velocity of 10 m/s. Calculate the heat transfer per unit length of the tube when wall temperature is maintained at 100°C all along length of the tube. How much would be the bulk temperature increase over one metre length of the tube ? Use the following relation : Nu = 0.023 Re08 Pr04 u = 20.6 x 106 N- s/m?: Pr = 0.694 c, 1.009 kJ/kg°C; k = 0.0297 kg/m°C;
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