A copper pipe having 35 mm OD and 30 mm ID carries liquid oxygen to the storage site of a space shutle at -182° C and 0.06 m3/min. The ambient air is at 20°C and has a dew point of 10°C.
A copper pipe having 35 mm OD and 30 mm ID carries liquid oxygen to the storage site of a space shutle at -182° C and 0.06 m3/min. The ambient air is at 20°C and has a dew point of 10°C. How much insulation with a thermal conductivity of 0.02 W/(mK) is needed to prevent condensation on the extrerior of the insulation if the convective heat transfer coefficient h = 17W/(m2K) on the outside? Take thermal conductivity of copper kcu = 400W/(mK).
