Spherical heat and mass transfer media
An improved random packing is the subject of the present invention. The packing element comprises a generally spherically shaped member which can be a perfect sphere, an ellipse, or some variation on either of the foregoing. The sphere is a hollow body having inner and outer surfaces with a plurality of openings passing through the body. A hypothetical axis passing through the sphere defines circular openings at both ends and the openings in between these two ends are generally elongated. The solid walls which form the sphere are of sufficient thickness so as to accommodate a plurality of indentations, some of which are formed in the solid walls and other indentations being formed coincidentally with the elongated openings between the solid wall sections. The indentations are characterized by curvilinear surfaces so that the total surface area presented by the inner surface (S 1 ) and all of the remaining surfaces (S 2 ) are at least twice the area of solid sphere of the same diameter with no indentations.
1. A packing element for use in a heat exchange or mass transfer tower, said packing element comprising:
a generally spherically shaped member having an inner surface (S 1 ) and an outer surface (S 2 ) and a plurality of openings extending through the member,
said member having a thickness which accommodates a plurality of indentations in said outer surface (S 2 ) sufficient to create a total surface area (S 1 & S 2 ) which is at least twice the surface area of a solid sphere of the same diameter with no indentations.
2. A packing element as set forth in claim 1 , wherein said member presents a plurality of solid walls between said openings, some of said indentations being located in said solid walls and some of said indentations being coincident with said openings.
3. A packing element as set forth in claim 1 , wherein said member comprises a sphere.
4. A packing element as set forth in claim 1 , wherein said member is generally elliptical and wherein said indentations extend in a direction parallel to the longitudinal axis of the ellipse.
5. A packing element as set forth in claim 1 , wherein said indentations present a curvilinear surface.
6. A packing element as set forth in claim 5 , wherein the free space per cubic foot utilizing said member is at least 50% greater than the free space obtained utilizing a solid member of the same dimension.
7. A packing element as set forth in claim 4 , wherein at least two of said openings are aligned with the longitudinal axis of the ellipse.
8. A packing element as set forth in claim 6 , wherein said member comprises a ceramic material.
9. A packing element as set forth in claim 1 , wherein the total surface area of S 1 & S 2 is approximately 2.5 times the surface area of a solid sphere of the same diameter.
10. A packing element as set forth in claim 9 , wherein the free space per given volume of packing is greater than 65%.
11. A packing element as set forth in claim 10 , wherein the free space is at least 69%.