https://orcid.org/0000-0001-8335-3829
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ABSTRACT
The influence of the heat pipe orientation and the working fluid type of the screen mesh wick heat pipe was investigated experimentally. A hybrid nanofluid using three proposals for composite nanoparticles scattered in DI Water was used as the working fluid. In each case, seven directions (0°–90°, deviation 15°) were investigated. Thermal properties were evaluated by the average temperature gap between the evaporator and condenser surfaces, thermal resistance, thermal conductivity (effective), and overall HTC. Experimental results imply that the tilt angle and the hybrid nanofluid used have a significant impact on heat transfer of heat pipe. By the time the tested heat pipes come into contact with 75% CuO–25% ZnO/DI water at an angle of 60°, they have the best heat transfer properties of any other type of fluid. Furthermore, it was found that the thermal characteristic of the heat pipes tested were hampered by the expansion of heat loads in the range 60–160 W.
Nomenclature
| Al2O3 | = | Aluminium Oxide |
| Au-CuS | = | Gold-Copper sulphide |
| CuO | = | Copper Oxide |
| DI | = | Distilled |
| EG | = | Ethylene Glycol |
| Fe3O4 | = | Ferrous Oxide |
| GHP | = | Grooved type Heat Pipe |
| HTC | = | Heat Transfer Coefficient (W/m2-K) |
| HRTEM | = | High-Resolution Transmission Electron Microscopy |
| h | = | overall heat Transfer Coefficient (W/m2-K) |
| Keff | = | Effective Thermal Conductivity (W/m-K) |
| MgO | = | Magnesium Oxide |
| MWCNT | = | Multi Wall Carbon Nanotubes |
| PVP | = | Poly Vinyl Pyrrolidone |
| R | = | Thermal Resistance (K-m/W) |
| SDS | = | Sodium Dodecyl Sulphate |
| SEM | = | Scanning Electron Microscopy |
| SS | = | Stainless Steel |
| Tc | = | Average temperature of condenser section (K) |
| Te | = | Average temperature of evaporator section (K) |
| TiO2 | = | Titanium Oxide |
| v | = | Volume concentration |
| wt | = | Weight concentration |
| XRD | = | X-ray diffraction |
| ZnO | = | Zinc Oxide |
| Subscripts | = | |
| bf | = | Basefluid |
| kHz | = | Kilo Hertz |
| nf | = | Nanofluid |
Additional information
Notes on contributors
Rakesh K. Bumataria
Rakesh K. Bumataria is Lecturer in Mechanical Engineering Department at Government Polytechnic, Porbandar, and research scholar in Mechanical Engineering Department at Gujarat Technological University, Ahmedabad. He is life member of ISTE (Indian Society for Technical Education). He is working on performance analysis of heat pipe using hybrid nanofluids. His area of interest is applied thermal science and artificial neural network.
N. K. Chavda
N. K. Chavda is working as Associate Professor in Mech. Engg. Dept. at A D Patel Insti. of Tech., New Vallabh Vidhyangar, Gujarat, India. He has 24 years of teaching experience at various levels and published/presented many research/review papers. He has published four technical books also.
Altaf H. Nalbandh
Altaf H. Nalbandh is Lecturer in Mechanical Engineering Department at Government Polytechnic, Porbandar, and research scholar in Mechanical Engineering Department at Gujarat Technological University, Ahmedabad. He is working on performance analysis of turning parameters using hybrid nanofluids. His area of interest is CAD/CAM and artificial neural network.