ZrCo bed is used as a hydrogen storage-delivery system (SDS) for nuclear fusion fuel gas. Hydrogen and it’s isotopes are used nuclear fusion reaction. However, hydrogen is easily explosive and storage is very difficult. Therefore, they are stored metal hydride, absorbed metal in low temperature and desorbed in high temperature. These process obey to transport phenomena principles. During the absorption and desorption of hydrogen, experimental data about change of pressure, temperature, and volume of hydrogen or ZrCo bed[2] analyze to analytical or numerical solution. In this result, pressure change during absorption is expressed analytic solution. And other change during absorption or desorption is expressed numerical solution using series equation.