Engineering, 15.07.2020 01:01 lareynademividp0a99r

A spherical pressure vessel of 8.0 meter diameter is used to store liquid nitrogen gas at -40Â°C. An insulation with a thermal conductivity of 0.085 W/m-K and thickness 350 mm is applied to the tank to reduce the heat transfer. a) Determine the radial position in the insulation layer at which the temperature is 0Â°C when ambient air temperature is 20Â°C and the convection coefficient is 6 W/mÂ²K. b) Repeat the same problem by considering contact resistance between sphere and the insulation of 0.2 K/W.

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A spherical pressure vessel of 8.0 meter diameter is used to store liquid nitrogen gas at -40Â°C. An...