Improvements of heat transfer coefficient for thermosiphon heat pipe heat exchanger

Thermal heat pipes are widely used to enhance heat transfer in heat exchangers. They enhance heat transfer by using a two-phase flow of the working fluid, as the vapor phase of heat can be absorbed in the evaporator section and rejected during the liquid phase in the condenser section. In this study...

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Bibliographic Details
Main Authors: Alsayah, Ahmed Mohsin, Faraj, Johin J., Eidan, Adel A.
Format: Conference Proceeding
Language:English
Subjects:
Condenser tubes
Evaporators
Forced convection
Heat exchangers
Heat pipes
Heat transfer coefficients
Liquid phases
Mass flow rate
Numerical analysis
Thermosyphons
Two phase flow
Vapor phases
Working fluids
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Summary:Thermal heat pipes are widely used to enhance heat transfer in heat exchangers. They enhance heat transfer by using a two-phase flow of the working fluid, as the vapor phase of heat can be absorbed in the evaporator section and rejected during the liquid phase in the condenser section. In this study, a numerical analysis of the performance of a thermosiphon heat exchangers with different diameters, different mass flow rate ratios and different tube arrangements to reach the highest forced convection heat transfer coefficient was performed. The results obtained were validated using the validated associations available in the literature and compared with previous studies. The results of the study showed that the gradient arrangement has a higher heat transfer coefficient than the direct arrangement at the same mass flow and tube diameter. The numerical results can be used to design a thermosiphon tube and use in experimental studies.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0212312