| 摘要 |
A heat exchange packing (100) comprises a plurality of packing sheets (2, 112, 212, 312) arranged adjacent to one another. Each packing sheet has an undulating shape composed of a first substantially transversely extending sine wave (4, 32, 114, 214) superimposed with a second substantially longitudinally extending sine wave (6, 36, 116, 216). A plurality of substantially longitudinally extending recesses (8, 220, 320) and a plurality of substantially transversely extending recesses (10, 222) each having an undulating surface are thereby defined. …<??>The packing sheet (2, 112, 212, 312) can be formed using a matrix (38) having the same shape as the sheet to be formed. The matrix (38) is formed from a plurality of blades (22, 322) arranged with their surfaces adjacent to form a block (24). The edges of the blades defining a first surface of the block are cut to give the first surface a first profile (32). The edges of the blades defining a second surface opposed to said first surface are cut to give the second surface a second profile (36). The cut edges defining the second surface are the brought into contact with a planar surface whereby the first and second profiles are superimposed in the first surface such that the matrix (38) is defined thereby. …<??>A plurality of the packing sheets may be disposed in vertical parallel relationship with alternate sheets reversed to form a heat exchange packing (100) in which the facing recesses (8) define substantially vertically extending channels (104) and the facing recesses (10) define substantially transversely extending channels (102). The channels present a low pressure drop to liquid to be cooled and to a cooling gas and yet provide tortuous paths for the liquid and gas. Thus, the packing is able to provide efficient heat exchange and yet have a low power requirement. |
