Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
Total energy exchange apparatus having a medium for transferring sensible and latent heat energy, accompanied or not by moisture, between two streams of air within which the apparatus is situated, said medium comprising a hub, a plurality of layers of corrugated sheet material and a corresponding plurality of layers of flat sheet material interleaved alternately with each other, said pluralities of layers being formed by spirally winding respective strips of each of said materials on and around said hub whereby said medium is disposed within an annular area extending outwardly from said hub, the corrugations of said layers of corrugated sheet material being parallel to each other so that, together with their respectively adjacent layers of flat sheet material, they provide passages for the flow of said air through said medium, and means retaining said medium in its said wound relation, at least one of said sheet materials being aluminum having an interractively adherent coating on its air passage surfaces comprising a mixture of hydrated calcium and alumium oxides.
Claim 2
Dependent Claim
169 words
Total energy exchange apparatus having a medium for transferring sensible and latent heat energy, accompanied or not by moisture, between two streams of air within which the apparatus is situated, said medium comprising a hub, a plurality of layers of corrugated sheet material and a corresponding plurality of layers of flat sheet material interleaved alternately with each other, said pluralities of layers being formed by spirally winding respective strips of each of said materials on and around said hub whereby said medium is disposed within an annular area extending outwardly from said hub, the corrugations of said layers of corrugated sheet material being parallel to each other so that, together with their respectively adjacent layers of flat sheet material, they provide passages for the flow of said air through said medium, and means retaining said medium in its said wound relation, at least one of said sheet materials being aluminum having an interractively adherent coating on its air passage surfaces comprising a mixture of hydrated calcium and alumium oxides.
Claim 3
Dependent Claim
41 words
Total energy exchange apparatus according to claim 1, wherein said adherent coating comprises a conversion coating layer on said aluminum surfaces, and a gelatinous coating layer on said conversion coating layer, said conversion coating layer further comprising a hydrated calcium aluminate.
Claim 4
Dependent Claim
32 words
Total energy exchange apparatus according to claim 1, wherein said adherent coating comprises a conversion coating portion on said aluminum sheet material, and a gelatinous coating portion on said conversion coating portion.
Claim 5
Dependent Claim
29 words
Total energy exchange apparatus according to claim 1 wherein the ratio of calcium to aluminum in said coating is from about 1:1 to about 2.5:1 on a weight-to-weight basis.
Claim 6
Dependent Claim
14 words
Total energy exchange apparatus according to claim 1, wherein the ratio is substantially 2:1.
Claim 7
Dependent Claim
31 words
Total energy exchange apparatus according to claim 1, wherein the weight of said coating is from about 0.5 to about 3.0 grams of coating per square foot of coated aluminum surface.
Claim 8
Dependent Claim
23 words
Total energy exchange apparatus according to claim 5, wherein said coating weight is from about 1.5 to about 2.5 grams per square foot.