In a pharmaceutical plant, a copper pipe (kc = 400 W/m·K) with inner diameter of 20 mm and wall thickness 15 mm is used for carrying liquid oxygen to a storage tank. The liquid oxygen flowing in the pipe has an average temperature of −200°C and a convection heat transfer coefficient of 120 W/m·K. The condition surrounding the pipe has an ambi- ent air temperature of 20°C and a combined heat transter coefficient of 20 W/m2·K. If the dew point is 10°C, determine the thickness of the insulation = 0.05 W/m·K) around the copper pipe to avoid condensation on the outer surface. Assume thermal contact resistance is negligible.
FIGURE P3-89
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.