HEAT EXCHANGER AND HEAT PUMP TYPE WATER HEATER

PROBLEM TO BE SOLVED: To provide a heat exchanger with satisfactory heat exchange efficiency while preventing corrosion due to electrolytic corrosion, and also to provide a heat pump type water heater capable of performing efficient heat pump operation. SOLUTION: The first heat exchange pipe 12A and...

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Bibliographische Detailangaben
Hauptverfasser:	KASUKAWA NOBUYUKI, HARIMA KAZUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL HEAT EXCHANGE IN GENERAL HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING LIGHTING MECHANICAL ENGINEERING RANGES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a heat exchanger with satisfactory heat exchange efficiency while preventing corrosion due to electrolytic corrosion, and also to provide a heat pump type water heater capable of performing efficient heat pump operation. SOLUTION: The first heat exchange pipe 12A and the second heat exchange pipe 12B comprise metallic materials of the same quality. The cross-sectional shape of the second heat exchange pipe 12B inside which a heating medium flows is made circular or elliptic, while the cross-sectional shape of the first heat exchange pipe 12A inside which the liquid to be heat-exchanged flows is made non-circular in such a manner that the two opposed faces are recessed faces. At least a part of the second heat exchange pipe 12B is interposed in the recessed face parts 22A and 22B of the first heat exchange pipe.