Heat transfer enhancement from a horizontal rectangular fin embedded with circular perforations under natural convection is studied. Through the experiment and simulation

the heat dissipation power of different perforated numbers was compared to the equivalent solid one. Despite the perforated number

the perforated location

size and shape were also considered in heat transfer enhancement. It is shown that the perforated fin is superior to the solid. And with the increase in the number of perforation

the heat dissipation power increases first and then decreases. There is an optimal perforated number 7. Its heat dissipation power increases by 13.25% comparing with the corresponding solid fin. When the perforated location is at the bottom

the heat dissipation power is the best. Then the middle is the second and the top is the worst. Within the scope of the study

with the increase of perforated radius

the heat dissipation power increases first and then decreases. When the perforated radius is 7mm

the heat dissipation is the biggest. Its heat dissipation power increases by 13.25% comparing with the corresponding solid fin. And comparison of the triangular

square and circular perforations with the same areas

the heat dissipation of the circular perforations is the best.