|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

LIGHTING AND HEATING

|  | F28 |
HEAT EXCHANGE IN GENERAL

|  | F28 |
Note(s) Apparatus using heat exchange or heat transfer (as defined below) for specific purposes is classified either in sub-class Fulltext... Hierarchy... Expanded...F28B or in the appropriate sub-classes of, for example, classes Fulltext... Hierarchy... Expanded...F22, Fulltext... Hierarchy... Expanded...F24, Fulltext... Hierarchy... Expanded...F25, Fulltext... Hierarchy... Expanded...F26, or Fulltext... Hierarchy... Expanded...F27; if no such other sub-class is appropriate, such apparatus is classified in sub-clas Fulltext... Hierarchy... Expanded...F28C or Fulltext... Hierarchy... Expanded...F28D. In this class, the following terms are used with the meanings indicated: "Heat exchange" means the heating or cooling of a fluid or fluent solid by direct or indirect contact with a heated or cooled fluid or fluent solid. "Heat transfer" means the heating or cooling of a fluid or fluent solid by direct contact with a heated or cooled surface or body.

|  | F28D |
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUB-CLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (furnaces Fulltext... Hierarchy... Expanded...F27; details of heat-exchange apparatus of general application Fulltext... Hierarchy... Expanded...F28F)

|  | F28D 1/00 - F28D 5/00 |
Heat-exchange apparatus with stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall

|  | F28D 1/00 |
Heat-exchange apparatus in which one heat-exchange medium is a large body of fluid (Fulltext... Hierarchy... Expanded...F28D 5/00 takes precedence)

|  | F28D 1/02 |
· | with the heat-exchange conduits immersed in the body of fluid, e.g. with plate-like or laminated conduits

|  | F28D 1/04 |
· · | with tubular conduits

|  | F28D 1/06 |
· | with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid

|  | F28D 3/00 |
Heat-exchange apparatus in which a heat-exchange medium flows in a continuous film or trickles freely over the conduits (Fulltext... Hierarchy... Expanded...F28D 5/00 takes precedence)

|  | F28D 3/02 |
· | with tubular conduits

|  | F28D 3/04 |
· | Distributing arrangements

|  | F28D 5/00 |
Heat-exchange apparatus using the cooling effect of natural or forced evaporation

|  | F28D 5/02 |
· | in which the evaporating medium flows in a continuous film or trickles freely over the conduits

|  | F28D 7/00 - F28D 9/00 |
Heat-exchange apparatus with stationary conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall

|  | F28D 7/00 |
Heat-exchange apparatus employing tubular conduits (employing moving conduits Fulltext... Hierarchy... Expanded...F28D 11/00)

|  | F28D 7/02 |
· | the conduits being helically coiled (Fulltext... Hierarchy... Expanded...F28D 7/10 takes precedence)

|  | F28D 7/04 |
· | the conduits being spirally coiled (Fulltext... Hierarchy... Expanded...F28D 7/10 takes precedence)

|  | F28D 7/06 |
· | the conduits having a single U-bend (Fulltext... Hierarchy... Expanded...F28D 7/10 takes precedence)

|  | F28D 7/08 |
· | the conduits being otherwise bent, e.g. in a serpentine or zig-zag (Fulltext... Hierarchy... Expanded...F28D 7/10 takes precedence)

|  | F28D 7/10 |
· | the conduits being arranged one within the other, e.g. concentrically

|  | F28D 7/12 |
· · | the surrounding tube being closed at one end, i.e. return type (Fulltext... Hierarchy... Expanded...F28D 7/14 takes precedence)

|  | F28D 7/14 |
· · | both tubes being bent

|  | F28D 9/00 |
Heat-exchange apparatus employing plate-like or laminated conduits (employing moving conduits Fulltext... Hierarchy... Expanded...F28D 11/00)

|  | F28D 9/02 |
· | the heat-exchange media travelling at an angle to one another (Fulltext... Hierarchy... Expanded...F28D 9/04 takes precedence)

|  | F28D 9/04 |
· | the conduits being formed by spirally-wound plates or laminae

|  | F28D 11/00 |
Heat-exchange apparatus with moving conduit assemblies

|  | F28D 11/00 |
Heat-exchange apparatus employing moving conduits

|  | F28D 11/02 |
· | the movement being rotary, e.g. performed by a drum or roller (Fulltext... Hierarchy... Expanded...F28D 11/08 takes precedence)

|  | F28D 11/04 |
· · | performed by a tube or a bundle of tubes

|  | F28D 11/06 |
· | the movement being reciprocating or oscillating (Fulltext... Hierarchy... Expanded...F28D 11/08 takes precedence)

|  | F28D 11/08 |
· | more than one conduit assembly performing independent movements, e.g. rotary bundle of tubes in a rotary drum

|  | F28D 13/00 - F28D 19/00 |
Heat-exchange apparatus employing intermediate heat-transfer media or bodies

|  | F28D 13/00 |
Heat-exchange apparatus with fluidised fluent solid confined within a conduit, e.g. between perforated screens

|  | F28D 15/00 |
Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls

|  | F28D 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

|  | F28D 17/02 |
· | using rigid bodies, e.g. of porous material

|  | F28D 17/04 |
· | Distributing arrangements for the heat-exchange media

|  | F28D 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

|  | F28D 19/02 |
· | using granular particles

|  | F28D 19/04 |
· | using rigid bodies, e.g. mounted on a movable carrier

|  | F28D 21/00 |
Heat-exchange apparatus not covered by any of the groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F28D 1/00-F28D 19/00

|  | F28D 21/00 |
Heat-exchange apparatus not covered by any of the groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F28D 1/00-F28D 19/00