| 摘要 |
<p>The present invention relates to a hot water supplying system that includes a preheating-circulating system, which heats water to maximally reduce the time to attain a temperature set by a user, and is designed to use a portion of preheating energy for heating, preventing pipelines from being frozen to burst in winter by preheating-circulating. In order to achieve the object, the invention provides a hot water supplying system that includes: a water tank for storing water flowing into an inlet; a heat exchanger for heating the water flowed therein; a controller that compares a temperature measured by a temperature sensor disposed at a predetermined position in a pipeline through which water flows, with a set preheating temperature, and controls the operation of the heat exchanger; and a pump that is disposed in a pipeline connecting a first node, which is disposed in a pipeline connecting the heat exchanger with an outlet, with a second node, which is disposed in a pipeline connecting the inlet with the water tank. According to a hot water supplying system of the invention, a water tank storing a predetermined amount of water is provided in the hot water supplying system, such that it is possible to supply hot water heated by a set temperature in the shortest time when a user wants to use the hot water, by preheating water stored in the water tank and remaining in the pipelines even when the hot water is not being used, and to prevent the pipelines from freezing and bursting during the winter.</p> |
