Heat Pipe Fabrication and Performance Evaluation for Different Coolants

The heat pipe has higher thermal conductance, which prominent the thermal transport from one point to another point and makes it the most useful in the cooling applications. In this work, the heat pipe is designed and made to cool the electronic devices based on the case study on different parameters (pipe material, working fluid, length, angle, mesh size of wick). The pipe has a length of 30 cm, the internal diameter of 1 cm and a thickness 1 mm. Evaporator, adiabatic and condenser section lengths are 8.5 cm, 6.5 cm and 15 cm, respectively. The coolant filling ratio for water-based heat pipe is 85% of evaporator volume and for acetone-based is 100% by volume of evaporators. Annular fins (5 × 5 cm2) of aluminium plates are used in the condenser section to enhance the heat transfer, and fin gap is 1.2 cm. The efficient cooling for heat pipes is observed at 60° of inclination and at a temperature of 60 °C. The maximum heat transfer capability of the wick is maximum at horizontal position.