In: Mechanical Engineering
Methane gas enters a horizontal pipe with a thin wall of 25 cm diameter at a temperature of 309 C with 4.5 tons of mass flow per hour and exits at 289 C. The pipe is smooth and its length is 10 m and the ambient and environmental temperature is 25 C. Since the smear coefficient of the pipe surface is given as 0.8;
a-) Indoor and outdoor convection coefficients (W / m2K),
b-) Heat loss from the pipe to the environment (W),
c-) The surface temperature of the pipe (C),
d-) Calculate the required fan control (W) and interpret the results.