| 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.</p> |
