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| SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| F 28 | HEAT EXCHANGE IN GENERAL (arrangement or mounting of heat-exchangers in air-conditioning, air-humidification or ventilation F 24 F 13/30) |
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| F 28 D | HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F 24 H; furnaces F 27; details of heat-exchange apparatus of general application F 28 F) |
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1/ | 00 | Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators (F 28 D 5/00 takes precedence) |
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1/ | 02 | . | with the heat-exchange conduits immersed in the body of fluid |
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1/ | 03 | . | . | with plate-like or laminated conduits [4] |
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1/ | 04 | . | . | with tubular conduits |
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1/ | 047 | . | . | . | the conduits being bent, e.g. in a serpentine or zig-zag [4] |
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1/ | 053 | . | . | . | the conduits being straight [4] |
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1/ | 06 | . | with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid |
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3/ | 00 | Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits (F 28 D 5/00 takes precedence) |
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3/ | 02 | . | with tubular conduits |
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3/ | 04 | . | Distributing arrangements |
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5/ | 00 | Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation |
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5/ | 02 | . | in which the evaporating medium flows in a continuous film or trickles freely over the conduits |
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7/ | 00 | Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall |
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7/ | 02 | . | the conduits being helically coiled (F 28 D 7/10 takes precedence) |
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7/ | 04 | . | the conduits being spirally coiled (F 28 D 7/10 takes precedence) |
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7/ | 06 | . | the conduits having a single U-bend (F 28 D 7/10 takes precedence) |
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7/ | 08 | . | the conduits being otherwise bent, e.g. in a serpentine or zig-zag (F 28 D 7/10 takes precedence) |
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7/ | 10 | . | the conduits being arranged one within the other, e.g. concentrically |
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7/ | 12 | . | . | the surrounding tube being closed at one end, i.e. return type (F 28 D 7/14 takes precedence) |
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7/ | 14 | . | . | both tubes being bent |
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7/ | 16 | . | the conduits being arranged in parallel spaced relation (F 28 D 7/02 to F 28 D 7/10 take precedence) [4] |
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9/ | 00 | Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall |
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9/ | 02 | . | the heat-exchange media travelling at an angle to one another (F 28 D 9/04 takes precedence) |
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9/ | 04 | . | the conduits being formed by spirally-wound plates or laminae |
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11/ | 00 | Heat-exchange apparatus employing moving conduits |
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11/ | 02 | . | the movement being rotary, e.g. performed by a drum or roller (F 28 D 11/08 takes precedence) |
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11/ | 04 | . | . | performed by a tube or a bundle of tubes |
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11/ | 06 | . | the movement being reciprocating or oscillating (F 28 D 11/08 takes precedence) |
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11/ | 08 | . | more than one conduit assembly performing independent movements, e.g. rotary bundle of tubes in a rotary drum |
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13/ | 00 | Heat-exchange apparatus using a fluidised bed |
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| Heat-exchange apparatus employing intermediate heat-transfer media or bodies [3] |
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15/ | 00 | Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls |
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15/ | 02 | . | in which the medium condenses and evaporates, e.g. heat-pipes [4] |
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15/ | 04 | . | . | with tubes having a capillary structure [6] |
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15/ | 06 | . | . | Control arrangements therefor [6] |
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17/ | 00 | Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles |
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17/ | 02 | . | using rigid bodies, e.g. of porous material |
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17/ | 04 | . | Distributing arrangements for the heat-exchange media |
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19/ | 00 | Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium |
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19/ | 02 | . | using granular particles |
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19/ | 04 | . | using rigid bodies, e.g. mounted on a movable carrier |
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20/ | 00 | Heat storage plants or apparatus in general (specially adapted for particular applications, see the relevant places, e.g. F 24 D 15/02) |
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20/ | 02 | . | using latent heat [6] |
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21/ | 00 | Heat-exchange apparatus not covered by any of the groups F 28 D 1/00 to F 28 D 20/00 [4] |
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