Shell-side heat transfer coefficients in cylindrical heat exchangers the influence of geometrical factors. II — the leakage case

The mass-transfer analogue method, used previously to measure heat transfer coefficients in a single internal compartment of a small cylindrical shell-and-tube heat exchanger model, has been used to study the case where clearances exist between shell and baffle, and between tubes and baffle, for one baffle-spacing, with various flow configurations, and varying baffle-cut. Baffles of two thicknesses with the same ‘Z’ factor, gave different results, contrary to the accepted view. These preliminary results show the need for further work.