Heat Transfer Performance of a Vibrated Two-Phase Closed Thermosyphon.

Shalaby, M. A.; Sultan, G. I.; Abdel Salam, A.

doi:10.21608/bfemu.2021.141399

Heat Transfer Performance of a Vibrated Two-Phase Closed Thermosyphon.

Document Type : Research Studies

Authors

¹ Mechanical Power Eng.ineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt, P. O. 35516

² Mechanical Power Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt, P. O. 35516

³ Mechanical Power Engineering Department., Faculty of Engineering El-Mansoura University, Egypt, P. O. 35516

10.21608/bfemu.2021.141399

Abstract

An experimental investigation had been carried out in order to study the heat transfer performance of a vibrated two-phase closed thermosyphon tube. The working fluid used was R143a. The effects of heat flux (1276W/m² ≤q≤ 6331 W/m²), filling percentage (30%≤V⁺≤5100%), the vibration dimensionless frequency (1.085≤ F ≤3.26), and the dimensionless amplitude (0.19 ≤ B ≤0.57) were studied. It was found that, the optimum filling percentage and the best dimensionless frequency values are 50% and 1.448, respectively. The Nusselt number had been correlated in a dimensionless form as a function of Kutateladze number, filling ratio, dimensionless frequency, dimensionless amplitude, and reduced pressure ratio.

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