FILM FILL-PACK FOR INDUCEMENT OF SPIRALING GAS FLOW IN HEAT AND MASS TRANSFER CONTACT APPARATUS WITH SELF-SPACING FILL-SHEETS

摘要

A film fill-pack has a plurality of fill-sheets with an ordered array of ridges and grooves generally extending above a planar surface on both the obverse and reverse surfaces of a fill-sheet, which fill-sheets at an assembled state provide the ridges and grooves of facing obverse and reverse surfaces of adjacent fill-sheets in an arrangement providing a plurality of channels between adjacent fill-sheets for gas flow therethrough and where the ordered arrangement of ridges and grooves induces spiraling of the gas flow through the channels for promotion of improved heat transfer; and, where the fill-sheets further include a spacing arrangement providing a compact nesting of adjacent sheets with minimal sheet-to-sheet displacement at least at two of the edges for compact handling, transfer and storage with a self spacing of adjacent fill-sheets at assembly of the film fill-pack.