Heat transfer performance of a vibrated two-phase closed thermosyphon

الملخص EN

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 ≤ 6331W / m2), filling percentage (30 % ≤ V + ≤ 100 %), the vibration dimensionless frequency (1.08 ≤ 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.