Energy-efficient heat exchanger equipped with multiple short-length taper twisted tapes. Issue 1 (31st December 2022)

• Record Type: Journal Article
• Authors: Muthusamy, C.; Gopi, P.
• Is Part Of: International journal of ambient energy. Volume 43:Issue 1(2022)
• Page Start: 6732
• Page End: 6744
• Publication Date: 2022-12-31
• Subjects: Twisted tape -- heat transfer enhancement -- pressure drop -- air heater -- insert; Power resources -- Periodicals; Renewable energy sources -- Periodicals; 621.04205
• DOI: 10.1080/01430750.2021.1999322
• Languages: English
• ISSNs: 0143-0750

Abstract

Abstract : This article presents an experimental study of the heat transfer characteristics and the pressure drop of the circular tube fitted with multiple short-length taper twisted tape in convergent and divergent mode with the pitch ratios of 3, 4 and 5 and full-length twisted tape of two different pitch length such as 10 and 14 cm. Tapered twisted tapes have a larger effect on the enhancement of heat transfer with the lower pressure drop compared with the short-length uniform width twisted tape. Based on constant pumping power and constant heat duty, short-length taper twisted tapes are performed better than full-length twisted tape. Based on the experimental data, correlations are developed by using the statistical analysis and the arrived results are within the acceptable limit.