For a flow in a pipe with a constant heat flux, the change of mean temperature of the fluid as a function x is constant. Select one: True False The difference between the surface and fluid temperature increases with x due to increase in h near the entrance at a constant surface heat flux. Select one: True False The slope of the fluid temperature profile at a constant heat flux condition equals q"/Cp Select one: True False When Cr is greater than zero and NTU is 0.25 parallel flow is the most effective HExr. Select one: True False