Solid angle surface area of a spherical cap is always equal to the area of a circle whose radius equals the distance from the rim of the spherical cap to the point where the cap's axis of symmetry intersects the cap. In the diagram this radius is given as: Hence for a unit sphere the solid angle of the spherical cap is given as: When = , the spherical cap becomes a hemisphere having a solid angle 2. The solid angle of the complement of the cone (picture a melon with the cone cut out) is clearly: This is also the solid
Solid sorbents for carbon capture adsorption for solids requires less energy for the CO to desorb from the material surface. Also, two primary or secondary amine molecules are generally required to absorb a single CO molecule in liquids. For solid surfaces, large capacities of CO can be adsorbed. For temperature swing adsorption processes, the lower heat capacity of solids has been reported to reduce the sensible energy required for sorbent regeneration. Many environmental concerns over liquid amines can be eliminated by the use of solid adsorbents. Manufacturing costs are expected to be significantly greater than the cost of simple amines. Because flue gas contains trace