In a dairy operation, milk at a flow rate of 250 L/h and a cow-body temperature of 38.6 oC must be chilled to a safe-to-store temperature of 13 oC or less. Ground water at 10 oC is available at a flow rate of 0.72 m3/h. The density and specific heat of milk are 1030 kg/m3 and 3860 J/kg∙K, respectively. By using NTU method, determine the UA product of a counterflow heat exchanger required for the chilling process. Determine the length of the exchanger if the inner pipe has a50-mm diameter and the overall heat transfer coefficient is U = 1000 W/m2∙K.

Q: The liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.4 kg / s…

A: Given: T1 = 90 oC             T1 = 15 oC Required: Convection coefficient in the pipe hfood =?…

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Q: The liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.4 kg / s…

A: Given DataMass flow rate of food=0.4 kg/s

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A: 1 TR=3.517 kW1 TR=3024 kcal1 kcal=4184 J1 Ton=3024×4184=12652416 J=12652.416 kJ

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Q: The liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.3 kg / s…

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Q: the cor

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Q: The liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.3 kg / s…

A: Given: temperature of liquidT1= 90°C  flow rate m= 0.3 kg / s  density ρ= 1000 kg / m³ specific heat…