Apr 24, 2018 · It was found that crimped spiral fin provides higher heat transfer and pressure drop than the other four fins; fin tube heat exchangers are mostly employed to gas to liquid heat exchangers; it is an effective way to reduce the air side thermal resistance which often accounts for about 90% of the overall thermal resistance.
Dec 01, 2014 · Until now, many researchers have investigated those effects of plain fins, wavy fins, louver fins, slit fins, compounded fins, circular (or annular) fins, and several spiral fins on the air-side performance. Currently, the spiral fin-and-tube heat exchanger earns its popularity in waste heat recovery system applications, as shown in Fig. 3. This is because of the easy manufacturing process of the spiral fin To some extent, the fin tube affects the performance and In addition, when the gas turbine exhaust gas transfers heat to the steam inside the tube through the spiral fin tube, although the spiral fin tube strengthens the heat transfer ability of the heating surface, it also makes the outer fin work in the harsh high temperature environment, which makes the temperature of the outer spiral fin often higher, which may exceed the allowable temperature tolerance limit of the
Heat exchanger is a basic component used in thermal processes such as industrial fluid heating, household appliances, waste heat recovery units (WHRU), etc. Presently, the spiral fin-and-tube heat
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