Question

Liquid glycerin is flowing through a 25-mm-diameter and 7-m-long tube. the liquid glycerin enters the tube at 20°c with a mass flow rate of 0.5 kg/s. if the outlet mean temperature is 40°c and the tube surface temperature is constant, determine the surface temperature of the tube. the properties of glycerin at tb = (ti + te)/2 = 30°c are: cp = 2447 j/kg∙k, k = 0.2860 w/m∙k, μ = 0.6582 kg/m∙s, and pr = 5631

Answer 1

Respuesta:

ΔA= Vο.α.ΔT