F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
LIGHTING AND HEATING
 F28
HEAT EXCHANGE IN GENERAL
 F28

Note(s)

  1. Apparatus using heat exchange or heat transfer (as defined below) for specific purposes is classified either in sub-class F28B or in the appropriate sub-classes of, for example, classes F22, F24, F25, F26, or F27; if no such other sub-class is appropriate, such apparatus is classified in sub-clas F28C or F28D.
  2. In this class, the following terms are used with the meanings indicated:
    1. "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.
    2. "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 F27; details of heat-exchange apparatus of general application 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 (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 (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 F28D 11/00)
 F28D 7/02
·  the conduits being helically coiled (F28D 7/10 takes precedence)
 F28D 7/04
·  the conduits being spirally coiled (F28D 7/10 takes precedence)
 F28D 7/06
·  the conduits having a single U-bend (F28D 7/10 takes precedence)
 F28D 7/08
·  the conduits being otherwise bent, e.g. in a serpentine or zig-zag (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 (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 F28D 11/00)
 F28D 9/02
·  the heat-exchange media travelling at an angle to one another (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 (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 (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 F28D 1/00-F28D 19/00
 F28D 21/00
Heat-exchange apparatus not covered by any of the groups F28D 1/00-F28D 19/00