F
SECTION F — MECHANICAL ENGINEERING
;
LIGHTING
;
HEATING
;
WEAPONS
;
BLASTING
LIGHTING
;
HEATING
F28
HEAT EXCHANGE IN GENERAL
F28
Note(s)
In this class, the following expressions 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.
Apparatus using heat exchange or heat transfer (as defined in Note (1) above) for specific purposes is classified either in subclass
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F28B
or in the appropriate subclasses of, for example, classes
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F22
,
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F24
,
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F25
,
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F26
, or
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F27
; if no such other subclass is appropriate, such apparatus is classified in subclass
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F28C
or
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F28D
.
F28B
STEAM OR VAPOUR CONDENSERS
(condensation of vapours
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B01D 5/00
; steam engine plants having condensers
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F01K
; liquefaction of gases
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F25J
; details of heat-exchange or heat-transfer arrangements of general application
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F28F
)
F28B 1/00
Condensers in which the steam or vapour is separated from the cooling medium by walls, e.g. surface condenser
F28B 1/02
·
using water or other liquid as the cooling medium
F28B 1/04
· ·
employing moving walls
F28B 1/06
·
using air or other gas as the cooling medium
F28B 1/08
· ·
employing moving walls
[3]
F28B 3/00
Condensers in which the steam or vapour comes into direct contact with the cooling medium
F28B 3/02
·
by providing a flowing coating of cooling liquid on the condensing surface
F28B 3/04
·
by injecting cooling liquid into the steam or vapour
(
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F28B 3/08
takes precedence)
F28B 3/06
·
by injecting the steam or vapour into the cooling liquid
(
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F28B 3/08
takes precedence)
F28B 3/08
·
with rotatable members
F28B 5/00
Condensers employing a combination of the methods covered by groups
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F28B 1/00
and
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F28B 3/00
;
Other condensers
F28B 7/00
Combinations of two or more condensers, e.g. provision of reserve condenser
F28B 9/00
Auxiliary systems, arrangements, or devices
F28B 9/02
·
for feeding steam or vapour to condensers
F28B 9/04
·
for feeding, collecting, and storing cooling water or other cooling liquid
F28B 9/06
· ·
with provision for re-cooling the cooling water or other cooling liquid
F28B 9/08
·
for collecting and removing condensate
F28B 9/10
·
for extracting, cooling, and removing non-condensable gases
F28B 11/00
Controlling arrangements with features specially adapted for condensers
(control arrangements in general
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G05
)