| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot water supply system capable of maintaining such a state by small energy, by making hot water of uncooled hot water come out immediately, when using the hot water supply system after interrupting over a long time. SOLUTION: This hot water supply system 1 has a hot water supply pipe 16 for arranging a double tube part 20 between a water heater 11 and a hot water outlet part 12 for generating hot water of the predetermined temperature. An inside flow passage 22a and an outside flow passage 21a are formed in the double tube part 20, and hot air generated by a hot air generating part 36 is passed to the outside flow passage 21a, to heat or reserve heat of the hot water in the inside flow passage 22a. COPYRIGHT: (C)2006,JPO&NCIPI
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