New stainless steel bellows is used special stainless steel sheet, roll paper into a round thin-walled tubes of several specifications, will be set into a multi-layer thin weld staggered circular tubes, up by a special process of multi-wave bulge forming layer bellows. The bellows tube showed such flow patterns and the arc of beam diameter of beam pattern, so that periodic changes in velocity and pressure, hot and cold fluid produced a strong disturbance to achieve a compound heat transfer enhancement. In this paper, water - water heat exchanger under the law of the corrugated tube heat transfer enhancement were studied, analyzed the new bellows mechanism of enhanced heat transfer, and gives the optimal size range of the tube, the new stainless steel bellows heat exchanger to provide a theoretical basis for practical application. Key words: new stainless steel bellows; Experimental study; enhanced heat transfer; corrugated tube heat exchanger

In recent years, bellows-type heat exchanger in its effect, not scaling, not easy to block, but also has the original traditional fixed tube sheet heat exchanger simple structure, applicability, etc, in the thermal systems, chemicals, pharmaceuticals and food industry access to a wide range of applications. This heat exchanger with corrugated enhanced tubes instead of shell and tube heat exchanger in the straight pipe, the bellows of the advantages and benefits of shell and tube structure, we will become a new, highly efficient heat exchanger. However, the market of corrugated tube heat exchanger, the bellows device generally made of stainless steel seamless pipe up and, most fatal weakness of this element is bearing down, prone to stress corrosion has resulted in the leakage, and even individual bellows fracture, economic loss or even dangerous.