F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F28 HEAT EXCHANGE IN GENERAL
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
F28D1/00 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
F28D1/02 with heat-exchange conduits immersed in the body of fluid
F28D1/04 with tubular conduits
F28D1/053 the conduits being straight
F28D1/0535 the conduits having a non-circular cross-section
F28D1/05366 Assemblies of conduits connected to common headers, e.g. core type radiators