The special design of the fin shape outside the tube increases the heat transfer area and reduces the thickness of the liquid film on the fin, thus increasing the condensation heat transfer coefficient; at the same time, the tube has spiral grooves to enhance the heat transfer in the tube; the comprehensive effect of two-sided heat transfer enhancement can greatly improve the overall heat transfer coefficient. The total heat transfer coefficient of smooth tube is increased by 2 - 3 times than that of ordinary smooth tube.

Because of the high heat transfer coefficient and large heat transfer surface of the condenser, the number of tubes used is reduced, the volume of the condenser is reduced, the copper consumption and manufacturing cost are reduced, and the energy consumption is reduced in operation.