F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F28
HEAT EXCHANGE IN GENERAL
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
F28D
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
F28D15/00
Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls; ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
F28D15/00
Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls; ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies