An infinite cylinder with r = 3 cm is initially at the uniform temperature of Ti = 10 °C. At this time, the cylinder is
Posted: Sun Jul 10, 2022 11:37 am
- An Infinite Cylinder With R 3 Cm Is Initially At The Uniform Temperature Of Ti 10 C At This Time The Cylinder Is 1 (128.98 KiB) Viewed 33 times
An infinite cylinder with r = 3 cm is initially at the uniform temperature of Ti = 10 °C. At this time, the cylinder is dropped into a bath of hot water at To = 80 °C and convection heat transfer coefficient of h 1500 W.m-2.K-1. The thermal conductivity and diffusivity of cylinder are k = 0.6 W.m-¹. K-¹ and a = 0.15 x 10-6 m². s-1, respectively. solution must be laumped capacitance method A-Calculate the time required so that the temperature of the cylinder reaches 50 °C. B-Calculate the total heat transfer from the cylinder after 1 minute. the one term approximation for exact solution (Fo>0.2) C- Calculate the time required so that the temperature of the center line of the cylinder reaches 50 °C. D- Calculate the temperature of the surface of the cylinder when the center line temperature is 50 °C. E- which method is more accurate from above and explain why ?