SHELL-AND-TUBE HEAT EXCHANGER DATA PRODUCED BY AN ELECTROCHEMICAL MASS TRANSFER MODELLING TECHNIQUE.

Heat transfer data relating to the shell-side of shell-and-tube heat exchangers have been produced using a diffusion controlled electrochemical mass transfer modelling technique. In the electrochemical technique an aqueous solution of potassium ferri and ferro cyanide is circulated through a heat exchanger model made of plastic, covering a range of Reynolds numbers. Using the Chilton and Colburn analogy between heat and mass transfer local heat transfer coefficients can be calculated directly from the measurements and detailed distribution patterns quickly established. This paper describes the technique and discusses some of the important conclusions that have emerged from the vast amount of experimental data produced.