HEAT EXCHANGER, HEAT EXCHANGE SYSTEM, AND CONSTRUCTION METHOD OF HEAT EXCHANGE SYSTEM

PROBLEM TO BE SOLVED: To provide a highly efficient heat exchanger with no risk of the occurrence of a pitch deviation in a pipe of the heat exchanger, t facilitating working and construction even when buried. SOLUTION: An inner pipe 3 provided with a spiral groove 9 on the outer face is inserted in...

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Bibliographische Detailangaben
Hauptverfasser:	TERAUCHI SADATO, SATO TADAHIRO, SAKADO JIRO, SUWA YASUHIKO, HIDESHIMA TAMOTSU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING 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 highly efficient heat exchanger with no risk of the occurrence of a pitch deviation in a pipe of the heat exchanger, t facilitating working and construction even when buried. SOLUTION: An inner pipe 3 provided with a spiral groove 9 on the outer face is inserted in a cylindrical outer pipe 5. The outer diameter (outer diameter of a projection part 11) of the inner pipe 3 and the inner diameter of the outer pipe 5 are substantially the same. Therefore, the projection part 11 of the inner pipe 3 and the inner face of the outer pipe 5 come in contact, and a spiral flow passage surrounded by the groove 9 and the inner face of the outer pipe 5 is formed. When a fluid is made to flow in the flow passage, the fluid flows in the spiral flow passage formed by the groove 9 and the inner face of the outer pipe 5, and performs heat exchange with the surrounding ground heat. COPYRIGHT: (C)2009,JPO&INPIT