摘要：Serrated welded spiral fin-and-tube heat exchangers (SWSFTHXs) are experimentally investigated. The work primarily focuses on the effects of the segmented fin height (hs) with various fin pitches (fp) on the air-side performance (ASP). Experimental results show that SWSFTHXs provide a higher air-side heat transfer coefficient than the plain welded spiral fin-and-tube heat exchangers (PWSFTHXs) at the same fp. The hs has a significant effect on the Nusselt number (Nu) and Colburn factor (j), whereas fp clearly has a greater effect on the friction factor (f) and Euler number (Eu) than hs. Furthermore, the Nu, j, f, and Eu correlations for PWSFTHXs and SWSFTHXs are also proposed.
关键词：Fin Spiral fin Segmented fin Fin pitch Heat exchanger
