Helium gas is stored at 293 K and 500 kPa in a 1-cm thick, 2-m-inner-diameter spherical tank made of fused silica (SiO2)

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Helium Gas Is Stored At 293 K And 500 Kpa In A 1 Cm Thick 2 M Inner Diameter Spherical Tank Made Of Fused Silica Sio2 1 (68.52 KiB) Viewed 9 times

Helium gas is stored at 293 K and 500 kPa in a 1-cm thick, 2-m-inner-diameter spherical tank made of fused silica (SiO2). The area where the container is located is well ventilated. The solubility of helium in fused silica (SiO2) at 293 K and 500 kPa is 0.00045 kmol/m3.bar. The diffusivity of helium in fused silica at 293 K is 4x10-14 m2/s. Determine: a) The mass transfer resistance of helium b) Mass transfer rate of helium in kmol/s by diffusion through the tank. c) The mass flow rate of helium in kg/s by diffusion through the tank. (Do not write just final ans. Show your calculations as much as possible)