| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot water supply system capable of immediately supplying hot water to a hot water load inexpensively with high efficiency with a simple system configuration.SOLUTION: A hot water supply system has: a first temperature adjusting mechanism MV1 for receiving high-temperature water from an upper outlet 21 of a hot water storage tank 2 and adjusting the hot water to a first temperature lower than a temperature of the high-temperature water to supply it to a hot water load 3 via a hot water pipe L1; a second temperature adjusting mechanism MV2 for receiving the warm water of an intermediate temperature layer from a center outlet 23 of the hot water storage tank 2 and adjusting the water to a second temperature lower than the first temperature to supply it to the first temperature adjusting mechanism MV1; and a return pipe L2 interconnecting an end of the hot water supply pipe L1 on the hot water supply load 3 side, and a center inlet 24 disposed on a side lower than the center outlet 23, and branching in the midway to connect to an inlet of the first temperature adjusting mechanism MV1 and an outlet of the second temperature adjusting mechanism MV2. A circulation pump 4 is disposed in the hot water supply pipe L1 or the return pipe L2, and low-temperature water lower than the second temperature is supplied to a lower inlet 26 of the hot water storage tank 2 and the second temperature adjusting mechanism MV2. |
