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)
Posted: Sat May 21, 2022 3:49 pm
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)