| 摘要 |
Provided is a hot-water supply temperature control structure for a waste heat recovery system using the heat exchanger of a hot-water tank, wherein the hot-water supply temperature control structure comprises: the hot-water tank including a waste heat exchanger which generates hot water by recovering waste heat from a waste heat source, a heating heat exchanger in which heat is exchanged to provide heating using the hot water, and a temperature sensor which checks the temperature of the hot water, and storing the hot water which exchanges the heat in the waste heat exchanger; a boiler heating the hot water, which exchanges the heat in the hot-water tank, to satisfy a heating and a hot-water supply predetermined temperature predetermined by a user, and supplying the heated hot water to a heating space and a hot-water supply space; a three-way valve installed on a heating line connected from the boiler to the heating space, and capable of selectively supplying a heating medium, which flows from the boiler, to the heating space or a water returning line; and a control part controlling the three-way valve to block the heating medium flowing from the boiler into the heating space and to make the heating medium convertibly flows into the heating heat exchanger of the hot-water tank directly through the water returning line so that the hot-water in the hot-water tank can be heated when temperature in the hot-water tank is detected to be as much as 0 to 10°C lower than the hot-water supply predetermined temperature of the boiler by the temperature sensor. [Reference numerals] (150) Control part |
