Heat transfer element capable of generating longitudinal vortex and element pair thereof

Abstract

The invention relates a heat transfer element capable of generating longitudinal vortex and an element pair thereof, and belongs to the field of strengthened heat transfer. The element is composed of a rib and a heat exchange surface, wherein the shape of the rib is a spiral cylinder with a square section; the element is obtained through the following manners that a straight line at the initial square center is a main axis, and one point outside the main axis rotates by an angle alpha clockwise around the main axis and advances for a length L along the main axis to obtain a spiral line, and the semidiameter of the spiral line is r; the initial square perpendicularly stretches by the length L so as to obtain a spiral cylinder; and the longitudinal vortex generated by the element has good quality; and compared with a discontinuous crossed rib, the heat transfer effect and the strengthened heat transfer property with same consumption are obviously improved.

Description

technical field [0001] The invention relates to a heat exchange element capable of generating a longitudinal vortex and an element pair thereof, belonging to the technical field of enhanced heat exchange. Background technique [0002] Since entering the 21st century, energy issues have become a bottleneck restricting my country's economic development. The energy consumption of industrial products in our country is much higher than that of developed countries, so improving energy utilization and saving energy is the most effective way to solve our energy problems. Most of the energy utilization is realized through thermal energy and various heat exchangers, and enhanced heat transfer can improve the thermal performance of heat transfer equipment, reduce heat transfer temperature difference and reduce pump power consumption, so enhanced heat transfer is important for energy saving and Improving energy efficiency plays a key role. [0003] According to different objects and c...

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Problems solved by technology

[0005] It can be concluded from the above analysis that the cross rib is easy to process, can produce high-quality longitudinal vortex, and has a better effect of enhancing heat transfer. There is still room for a substantial increase in the heat transfer index

In most heat transfer enhancement processes, there is such a problem: the better the heat transfer effect, the greater the pressure loss, and the longitudinal vortex heat transfer enhancement technology is also the same

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