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Prof. Ali Ali Abdul Aziz Ali :: Publications: |
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| 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 | Ali Ali Abdul Aziz Ali_Experimental Thermal and Fluid Science 65.pdf |
| 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. |
