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Investigation of heat transfer and pressure drop in a concentric heat exchanger with a snail entrance.

Author(s) : DURMUS A., ESEN M.

Type of article: Article

Summary

In the study, in order to increase heat transfer in concentric double-pipe heat exchangers by passive method, a snail mounted at inlet of the inner pipe and assumed as acting as a swirl generator was used. In the experimental set-up, cold air in ambient conditions was passed through the inner pipe while hot water was flowing through the annulus. The effects of a snail on the heat transfer and pressure drop were investigated for parallel and counterflow. An increase in Nusselt number of up to 120% was obtained in the swirl flow for counterflow and 45° swirling angle. The swirl flow effect of the snail had little effect on pressure drop, for a high increase in heat transfer.

Details

  • Original title: Investigation of heat transfer and pressure drop in a concentric heat exchanger with a snail entrance.
  • Record ID : 2003-1207
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 22 - n. 3
  • Publication date: 2002/02

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