| 摘要 |
1426971 Rotary heat exchangers MASSACHUSETTS INSTITUTE OF TECHNOLOGY 21 Jan 1974 [24 Jan 1973] 2807/74 Heading F4K In a gas-liquid heat exchanger 101 comprising a matrix 1 in the form of a multi-disc rotor rotated by a motor 4 so that portions thereof are continually moved from contact with one fluid to contact with the other fluid, a layer 5 of light non-detergent mineral oil is provided to coat the surface of the matrix as it passes from the liquid to the gas side of the exchanger and so prevent the liquid from being attached to the surface of the discs and evaporating into the gas. The layer of oil, which floats on the surface of the liquid, e.g. water to be cooled, in a container 6, also prevents any direct contact between the liquid and gas. The gas, e.g. cooling air, contacts the upper portion of the discs as it passes through a duct 7. The oil is continuously skimmed off and circulated through a filter 9 by a pump 9A. A series of vanes 14 are provided to remove from the gas any oil which may become entrained. In an alternative embodiment (not shown), stead of using oil, the surfaces of the rotor discs are coated with a thin coating of, e.g. Teflon (Registered Trade Mark) to prevent liquid adhering thereto. Instead of using discs, the matrix surfaces may alternatively consist of woven screens, stacked spheres or comprise triangular flow passages; the matrix can be made by metal, plastics or ceramic materials.
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