Heat transfer to medium and highly viscous non-Newtonian fluids in the fin-and -tube heat exchanger under the conditions of Re<2
270 was studied. The correlation of heat transfer was also presented. The modified Wilsons method was used for processing the experimental data. In order to lessen the effect of flow maldistribution on the experimental results
a measurement method was put forward to study the flow distribution in the heat exchanger by determining the temperatures of fluids.