Energy -conserving constant temperature water supply system

The utility model relates to a domestic water supply system technical field, in particular to energy -conserving constant temperature water supply system, the play water end (W. E. ) of thermo valve is put through with the end of intaking of hydroelectric power generation module mutually, the play water end (W. E. ) switch -on of hydroelectric power generation module has the trunk line, be provided with a plurality of water outlet solenoid valve on the trunk line respectively, between each water outlet solenoid valve on the trunk line parallel connection, two electrodes of hydroelectric powergeneration module are put through respectively on two electrodes of input of electric power storage module, control module is used for controlling each water outlet solenoid valve, the output of electric power storage module is put through with control module's input mutually. Using the utility model discloses the time, this structure makes the conversion of energy of aquatic supply power for control module for the electr