Question
In: Mechanical Engineering
An electrical resistance heater embedded in thin walled tube provides 71 kW of uniform heating to...
An electrical resistance heater embedded in thin walled tube provides 71 kW of uniform heating to increase the water temperature from 25°C to 75°C. Water enters the circular section of diameter 101 in cm, at a velocity 101 in cm/s. Heat loss to the surroundings is perfectly stopped by an insulation on the outer surface of the heater hence, all the heat dissipated by the heater is transferred to the flowing water in the tube. By analyzing the internal flow convection heat transfer and determine the length of the tube and the surface temperature at the exit of tube? The properties of water at the bulk mean temperature are ?= 1000 kg/m3, Cp= 4100 J/kg-K, k=0.631 W/m-K, Pr= 4.32, ?=0.658×10-6 m2/s.
Solutions
samet mamat answered 5 months agoRelated Solutions
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