HOT WATER SUPPLY SYSTEM

PROBLEM TO BE SOLVED: To provide a hot water supply system that can supply high-pressure hot water to a heat consuming device by using hot water supplied from a high-temperature water supply device including a hot water storage tank for storing hot water and a heater.SOLUTION: A hot water supply system includes: a hot water mixing device 13 for mixing high-temperature water with low-temperature water and supplying the mixed water to a heat consuming device 14; a water supply passage 1 in which water supplied from a water supply source 10 at predetermined water supply pressure flows; a decompression device 12 disposed in the middle of the water supply passage 1; a bypass passage 9 bypassing the decompression device 12 to make water flow; a water supply route switching device 11 for switching a water flowing route between the decompression device 12 and the bypass passage 9; and a high-temperature water supply device 20 for supplying high-temperature water to the hot water mixing device 13 by using the pressure of water supplied from the water supply passage 1. The high-temperature water supply device 20 includes: a hot water storage tank 21 for storing hot water as high-temperature water; and a heater 22 for heating hot water stored in the hot water storage tank 21 or water supplied from the water supply passage 1 to produce high-temperature water. 【課題】湯水を貯える貯湯タンクと加熱装置とを有する高温水供給装置から供給される湯水を用いて、熱消費装置に対して高圧の湯水を供給可能な給湯システムを提供する。【解決手段】高温水と低温水とを混合して熱消費装置１４に供給する湯水混合装置１３と、給水源１０から所定の給水圧で供給される水が流れる給水路１と、給水路１の途中に設けられる減圧装置１２と、減圧装置１２をバイパスして水を流すバイパス路９と、減圧装置１２又はバイパス路９に水を流すのかを切り替える給水経路切替装置１１と、給水路１から供給される水の圧力を利用して湯水混合装置１３に対して高温水を供給する高温水供給装置２０と、高温水供給装置２０は、湯水を高温水として貯える貯湯タンク２１と、貯湯タンク２１に貯えている湯水又は給水路１から供給される水を加熱して高温水を生成する加熱装置２２とを有する給湯システム。【選択図】図１