Patent ID: 8285129

Claim:
A hot water supply system for heating water, the system comprising: a heat exchanger configured to transfer heat from a heating device to an inflow water to supply an outlet water at a user-set temperature; a flow sensor configured to measure a flow rate of the inflow water; a water tank installed on an outflow side of the heat exchanger and configured to store an outflow water discharged from the heat exchanger; a first temperature sensor configured to measure a temperature of the inflow water, the first temperature sensor being installed at a predetermined position on an inlet pipe through which the inflow water flows; a second temperature sensor configured to measure a temperature of the outflow water, the second temperature sensor being installed at a predetermined position on an outlet pipe through which the outflow water flows; and a controller including an input unit configured to receive an input from a user, wherein the controller controls operation of the heating device by comparing the user set temperature with a temperature measured by the first temperature sensor and depending on variation in the flow rate measured by the flow sensor, and wherein the water discharged from the heat exchanger is mixed with the water stored in the water tank before being supplied to the user, thereby the water being supplied to the user having a temperature close to the user set temperature.