The study is aimed to evaluate the impact of multi-phase nanofluid flow enhance heat transfer. effect liquid medium and pumping together with enabling a bubble pump reverse thermosyphon arranged as an extension U-tube solar thermal collector could affect passive downward transfer numerically. selection were based on different phase change material accomplishment respect their optimal concentrat...

A novel system is developed for measuring the thermal resistance across thin layers of sintered copper wicks of varying porosity. Wicks to be tested are integrated into a passive vertical thermosyphon system and the resistance is measured for a series of input power levels. The wicks are sintered to a thermally conducting pedestal above a pool of de-ionized water and heated from below. The appa...

In this paper, I reviewed comprehensively the structure and operation of closed-loop IFOGs, Feedback Erbium-doped fiber amplifier (EFDA) FOGs, called FE-FOG. The procedure of finding the Sagnac shift for closed-loop IFOG has been studied. The signal processing in the closed-loop IFOG was simulated using PSCAD software. In the closed-loop IFOG, the phase shift was derived through frequent use of...

Two-phase heat transfer is experimentally examined through vertical small diameter tubes, D =1.45 and 2.8 mm using water under a pressure of 50 to 81 kPa and a natural circulation condition. The pool boiling correlation by Stephan-Abdelsalam and the thermosyphon boiling correlation by Imura, et al. predict the measured experimental data in the 2.8 mm tube with an error of -30%. A large heat tra...