Air-cooled heat exchanger
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Has anyone come into contact with air-cooled heat exchangers? What are their application conditions? What are the advantages and disadvantages of this cooling method? ? Could you introduce it?
Search for “air-cooled” on the site, and you will learn a lot. Newcomers must make good use of search.
It seems that not many people have experience with this. In our company, we use ethanol containing acid (with an acidity of 2-3 mol/L), at a temperature of 85-90 degrees; after cooling it to 50 degrees, evaporation cooling is used, which often leads to corrosion of the tube walls (I’ve posted discussions on this issue regarding the material used). Personally, I think that using tetrafluoroethylene tube bundles along with air cooling could work – it would help prevent corrosion and eliminate the need to use water. . . Everyone, please help discuss whether it is feasible to implement. . . . . . (Simple heat dissipation)
In simple terms, air cooling refers to an air cooler, and it’s certainly a viable option. However, the thermal conductivity of PTFE tubes might be relatively low. It’s best to use finned tubes for air cooling; cooling the temperature to 50 degrees is somewhat a waste of the heat exchange surface area in summer, but it’s still feasible
Air cooling refers to conventional air coolers that use air as the cooling medium. It is generally required that the exit temperature of this medium not be too low; it should be at least 20 degrees higher than the air temperature. There is also wet air cooling, which is preferably used in relatively dry areas. Air coolers are typically used in regions where water is scarce, and they are usually designed with external fin tubes. The book \"Air Coolers\" published by Harbin Institute of Technology provides a very detailed overview of air cooling; I recommend that the original poster take a look at it.
I think the corrosion you’re experiencing is mainly caused by acids, and it has little to do with the specific design of the heat exchanger, right? Consider improving the material of the heat exchanger; I’m not sure about the heat transfer efficiency of PTFE tube bundles. Please correct me if there are any mistakes in what I’ve said. :)
Generally, the condensation temperature for air-cooling is relatively high; it is usually around 60 degrees at the lowest. For water-cooling, it is generally around 40 degrees
Generally, the condensation temperature for air-cooling is relatively high; it is usually around 60 degrees at the lowest. For water-cooling, it is generally around 40 degrees
Currently, for the cooling circulation systems of large air separation plants, air cooling is **recommended**, especially in water-scarce areas, as it is important for water conservation. But I’m not sure about the operating costs for the two