Investigation of thermal performance of a new drill equipped with heat pipe and nanofluid

In this research, the application of nanoparticles for cooling in the drilling operation is investigated. In addition, a mathematical model is derived for perdition of temperature profile in drilling zone. A solid cylinder which is equipped by heat pipe is used for evaluation of drill performance. The numerical results of the mathematical model are compared with the experimental data, finally. The studies show that nanofluid injection into the heat pipe has a significant effect on the reducing of temperature profile. Results show that the best ratio for heat pipe diameter to the drill diameter will be about 0.12. The results show that the optimum distance between the tip of the heat pipe and the tip of the drill per drill length is 0.2, approximately. Also, the best cutting length per the drill diameter is 1.2 and the input heat flux is about 0.4 W/m.K. Also, the effect of different greases on temperature profile has been investigated in this research.