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F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28D7/04—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
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General Engineering & Computer Science
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Heat-Exchange Devices With Radiators And Conduit Assemblies
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Waermeaustauscher mit einer Heizflaeche, bestehend aus einer Anzahl von uebereinander in einem teilbaren zylindrischen Mantel angeordneten, zu platten Doppelspiralen gebogenen Rohren