BT-40-TR Vertical Tubeside Falling Film Evaporation of p-Xylene

M. R. Lane and L. Bishop

With p-xylene as the test fluid, HTRI collected data for both cocurrent and countercurrent flow in a vertical tubeside falling film evaporator (FFE) test section. Preliminary results for a single-component fluid indicate that HTRI methods predict heat transfer coefficients within ±35%; that pressure drop trends with the flow regime parameter; and that falling films in shear-controlled flow have a significantly higher pressure drop than films in gravity-controlled or transitional flow.