In: Mechanical Engineering
A hot plate with a temperature of 60 ° C will be cooled by adding 50 triangular profile needle blades k = 209 W / mK with a length of 59 mm and 10 mm. The ambient temperature is 20 C and the heat transfer coefficient on the surface is 20 W / m2K according to the situation;
a-) Wing efficiency,
b-) Total heat transfer rate (W) from the wings,
c-) Calculate the effectiveness of a wing.