What is an inward-fanning fin heat exchanger, and what are its characteristics?

This post was last edited by xlxuiin on 11/8/2016 at 17:14. The internal finned heat exchanger tube features a smaller surface area on the side with a high thermal conductivity, and a larger surface area on the side with a low thermal conductivity of the medium, thereby achieving a basic balance in heat exchange between different media. It consists of tubes along with fins; the fins are installed inside the tubes, along with fin support tubes. The fin support tubes are located at one end in the center of the tube, where there is a plug to support the fins. The fins are arranged around the inner wall of the tube in a cylindrical shape, and they fit tightly against the tube and the fin support tubes. This type of heat exchanger tube offers high heat exchange efficiency, allows for an increase in the temperature of the cooling water, saves water, and reduces costs. 1. The structural design and thermodynamic performance calculations for such heat exchanger manufacturers are simple. 2. Its volume is 50% to 70% smaller than that of conventional heat exchangers; the heat exchanger has a reduced volume. 3. Short payback period; slow scaling, reduced investment costs. Long cleaning intervals result in lower maintenance expenses for users. 4. The manufacturing process of the heat exchanger is exactly the same as that of traditional plain-tube heat exchangers, since the fins are located inside the heat exchange tubes. It avoids the disadvantages of the fins at the outer fins easily bending over during the insertion of the heat exchange tubes, as well as the difficulty in determining the correct relative position of these fins with respect to the baffle plates on the shell side. 5. As a result, vibration and operating noise associated with the fins and heat exchange tubes are eliminated; moreover, it prevents the fins of the high-ribbed outer finned tubes from coming loose easily, since the gas flows along the tube side and the fins form a single unit that extends axially along the heat exchange tubes. 6. Fluids with a high convective heat transfer coefficient flow on the shell side, while those with a low convective heat transfer coefficient flow on the tube side. Since gases flow inside the tubes, they can withstand high pressures. 7. The overall heat transfer coefficient **improves**, with the finning ratio of the internal fins reaching 1:7.4. The heat transfer efficiency of the relative light-tube heat exchanger improves by 32%, while the water savings rate can reach 85%.

The tube should contain steam, gaseous substances

No pictures, no truth – it seems like this manufacturing process is quite complex

Under the same pump power criterion, the pressure drop of the heat transfer element should be relative when achieving the same process parameters. Since it requires less volume compared to conventional gas heat transfer elements, the gas pressure drop on the fin side inside the tube tends to increase; however, this pressure drop can be reduced by optimizing the layout of the tube-fin structure. Practical operation shows that, for achieving the same process parameters, the gas pressure drop is similar to that of conventional heat exchangers. PS: Original poster, please check my signature for product information; it was posted by a forum moderator back in the early years. Forum link providing an introduction to finned heat exchangers: http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=163192&highlight=%D6%B5%B5%C I’m one of the first people in China to work with this type of product, with 15 years of experience in this field. Those who are interested can get in touch to discuss further. . . .

It is difficult to maintain this; the filter element has to be replaced entirely.

There is very little information available online, so it’s not possible to understand its structure clearly

If it’s a user on the 8th floor, you can say, “It’s very difficult to maintain this; the filter element has to be replaced entirely.” ”It can only be said that you are using those internal finned tubes of the Southern-style copy of the Ingersoll Rand intercooler. It is an air-cooled finned heat exchanger used in the aftercooler of air compressors; most of my customers can carry out maintenance using methods such as purging, unless the equipment has been in use for a long time, for example ten years, in which case replacement is recommended. The fins inside the tube need to be optimized according to operating conditions; they are not fixed in one form.

So more discussion is needed; there is very little information about such devices available on the internet at present