F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
Introduced: September 1968
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- HEAT EXCHANGE IN GENERAL
- Subclass:
- DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
Description
F28F covers structural and functional components applicable to heat-exchange apparatus regardless of their specific application or type. This subclass addresses design elements such as tube arrangements, fin geometries, baffles, supports, sealing devices, and corrosion-resistant coatings that improve heat transfer efficiency or apparatus durability. It encompasses both the mechanical construction details and auxiliary features common to various heat exchangers, including tubes, plates, and matrix elements used across refrigeration, air conditioning, industrial cooling, and thermal management systems. This classification excludes apparatus-specific details covered by more specialized classes (e.g., F28D for plate or frame heat exchangers, F28G for condensers) and focuses instead on universal design principles and modifications applicable across different heat-exchange technologies.
Scope Notes
Application references: Constructional details of exhaust gas recirculation [EGR] coolers
Related Keywords
14 direct subcodes
Child Classifications
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- F28F 1/00 Tubular elements; Assemblies of tubular elements
- F28F 11/00 Arrangements for sealing leaky tubes or conduits
- F28F 13/00 Arrangements for modifying heat transfer, e.g. increasing, decreasing
- F28F 17/00 Removing ice or water from heat-exchange apparatus
- F28F 19/00 Preventing the formation of deposits or corrosion, e.g. by using filters
- F28F 21/00 Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F 23/00 Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions
- F28F 25/00 Component parts of trickle coolers
- F28F 27/00 Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F 3/00 Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F 5/00 Elements specially adapted for movement
- F28F 7/00 Elements not covered by group , , or
- F28F 9/00 Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F 99/00 Subject matter not provided for in other groups of this subclass