1. Problem 5.8 Purification of hydrogen gas by diffusion through a Pd sheet is discussed in...
7.6 The purification of hydrogen gas by diffusion through a palladium sheet was discussed in Section 7.3. Compute the number of kilograms of hydrogen that pass per hour through a 5-mm- thick sheet of palladium having an area of 0.25 m at 500°C, Assume a diffusion coefficient of 1.0 × 10-3 m2/s, that the concentrations at the high- and low-pressure sides of the plate are 2.4 and 0.6 kg of hydrogen per cubic meter of palladium, and that steady-state conditions...
Purification of hydrogen gas by diffusion through a palladium sheet. Show that the number of kilograms of hydrogen that pass per hour through a 5-mm-thick sheet of palladium having an area of 0.20 m2 at 500°C is 2.6x10-3 kg/h. Assume a diffusion coefficient of 1.0 ´ 10-8 m2/s, that the respective concentrations at the high- and low-pressure sides of the plate are 2.4 and 0.6 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained.
The purification of hydrogen gas is possible by diffusion through a thin palladium sheet. Calculate the number of kilograms of hydrogen that pass per hour through a 1.6-mm-thick sheet of palladium having an area of 0.45 m2 at 500°C. Assume a diffusion coefficient of 1.9 × 10-8 m2/s, that the concentrations at the high- and low-pressure sides of the plates are 4.3 and 0.60 kg/m3 of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained.
Problem: When alpha-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is a function of hydrogen pressure, PH2 (in Mpa), and asbsolute temperature (T) according to CH= 1.34 X 10-2 sqrt(PH2) exp(- (27.2KJ/mol) / RT) Consider a thin iron membrane with the thickness and temperature listed below. Calculate the flux in (kg/(m2-s)) through this membrane if the hydrogen pressure on one side of the membrane is 0.17 MPa, and...
7. Compute the number of kilograms of hydrogen (M), which pass per hour through a 3-mmuthick sheet of palladium having an area of 0.30 m at 450 2.5 x 10 mils. The concentrations at the high and low pressure sides of the plate are 2.5 and 0.5 kg of hydrogen per cubic meter of palladium. Consider that steady-state conditions have been C. Assume a siffusion costficisnt (D) of AM attained. (20 pts) At XA-XB
Problem: When alpha-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is a function of hydrogen pressure, PH2 (in Mpa), and asbsolute temperature (T) according to Ch= 1.34 x 10-2 sqrt(PH) exp(- (27.2KJ/mol) /RT) Consider a thin iron membrane with the thickness and temperature listed below. Calculate the flux in (kg/(m²-s)) through this membrane if the hydrogen pressure on one side of the membrane is 0.17 MPa, and on...