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Prof. Ali Ali Abdul Aziz Ali :: Publications:

Title:
Heat transfer characteristics and pressure drop of the concentric tube equipped with coiled wires for pulsating turbulent flow
Authors: Ali A. Abdel Aziz, A.E. Zohi, M.A. Habib
Year: 2015
Keywords: Double-pipe heat exchanger;Coiled wire;Turbulent annulus flow;Pulsated flow
Journal: Experimental Thermal and Fluid Science
Volume: 65
Issue: Not Available
Pages: 41-51
Publisher: Elsevier Inc.
Local/International: International
Paper Link:
Full paper Not Available
Supplementary materials Not Available
Abstract:

The influence of pulsation with different amplitudes on the heat transfer rates in a double-pipe heat exchanger where a coiled wire inserts around the outer surface of the inner tube is investigated. The heat transfer and pressure drop characteristics were investigated for a coiled wire inserts with different pitch values in absence of pulsation. Pulsation frequencies that were produced by using a reciprocating device ranged from 140 to 260 cycles per minute (2.3–4.3 Hz). Five different displacement amplitudes were used where the stroke length of the reciprocating piston was varied from 60 to 185 mm.

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