Solar radiation is still as resource of time-dependent energy, so energy storage is necessary meet energy needs at cloud cover periods or at night or make an important contribution to needs of total energy. Solar energy can be changed into different forms and may be stored such as; chemical, thermal, potential, and kinetic energy. In General, the storage media selection is concerned to the energy deplete. The optimum capacity of storage equipment for a specified solar process based on the solar availability dependence time, the load nature, the auxiliary energy cost, and the process components price. These four factors should be reached the suitable system design (like storage size), which lowers the final delivering energy cost [1-4]. Solar air heaters have been applied in energy saving, and used for solar water desalination, space heating, marine products, textile, and air drying [5–7]. Solar air heaters have good properties such as