Patent ID: 6385987
Filing Date: 2002-05-14
Classification: B01J,F02C,F24F,F28B,F28C,F28D,F28F,Y02B

Abstract:
An evaporative apparatus for cooling comprising:at least two improvements elected from the group consisting of: (a) a first multi-stage indirect evaporative cooling heat exchanger; wherein said first multi-stage indirect evaporative cooling heat exchanger is linkable with a second multi-stage indirect evaporative cooling heat exchanger; wherein cool output of said first heat exchanger feedable to input of said second heat exchanger; wherein cool output from said second and said first linked heat exchangers combination is approximately additive of cool outputs of said second and said first linked heat exchangers individually; (b) a multi-substage direct evaporative cooling stage; wherein there are one or more air cleaning sub-stages of said multi-sub-stage direct evaporative stage; (c) multi-stage sumps wherein each sump stage, in a corresponding relationship to a stage of an indirect evaporative cooling heat exchanger, can contain sump water at different temperatures; wherein said separate sumps are sufficiently thermally insulated from each other to maintain different sump temperatures; (d) a multistage indirect evaporative cooling heat exchanger; wherein at least a last stage of said heat exchanger utilizes a portion of a dry side air flow to enter the wet side evaporative airflow; wherein said air has been sensibly cooled relative to, and is at a lower wet bulb temperature than, the ambient air; (e) an evaporative apparatus including parts of said wet side and dry side channels further comprising at least one assistant selected from the group consisting of air turbulence generation assistants, moist air turbulence generation assistants, water film surface increase assistants and water film droplet formation assistants; (f) dry side and wet side channels formed by placing in an opposed sense, pre-shaped sheets of thermally conductive material together; wherein said pre-shaped sheets are selected from the group consisting of polygonal channeled pre-shaped sheets and sinusoidal-corrugated channeled pre-shaped sheets.