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Numerical investigation on combined multiple shell-pass shell-and-tube heat exchanger with continuous helical baffles.

Author(s) : WANG Q., CHEN Q., CHEN G., et al.

Type of article: Article

Summary

A combined multiple shell-pass shell-and-tube heat exchanger (CMSP-STHX) with continuous helical baffles in outer shell pass has been invented to improve the heat transfer performance and simplify the manufacture process. The CMSP-STHX is compared with the conventional shell-and-tube heat exchanger with segmental baffles (SG-STHX) by means of computational fluid dynamics (CFD) method. The numerical results show that, under the same mass flow rate M and overall heat transfer rate Q(m), the average overall pressure drop 'delta p(m)' of the CMSP-STHX is lower than that of conventional SG-STHX by 13% on average. Under the same overall pressure drop 'delta p(m)' in the shell side, the overall heat transfer rate Qm of the CMSP-STHX is nearly 5.6% higher than that of SG-STHX and the mass flow rate in the CMSP-STHX is about 6.6% higher than that in the SG-STHX. The CMSP-STHX might be used to replace the SG-STHX in industrial applications to save energy, reduce cost and prolong the service life. [Reprinted with permission from Elsevier. Copyright, 2008].

Details

  • Original title: Numerical investigation on combined multiple shell-pass shell-and-tube heat exchanger with continuous helical baffles.
  • Record ID : 2009-1037
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 52 - n. 5-6
  • Publication date: 2009/01

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