| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an inexpensively manufacturable hot water supply system capable of shortening a rise time at a cold start to carry out hot water supply by using hot water from a hot water storage tank. <P>SOLUTION: A mixed water temperature adjusted by a mixing unit 24 at a hot water supply start (a time t1) is set a temperatureαhigher than a hot water supply set temperature to increase a rise speed of a piping internal temperature of a hot water supply path. By this, radiation loss when mixed water passes through a hot water supply pipe is suppressed, and a rise speed of a hot water supply temperature is increased also. When an integrated flow rate reaches a change-over preparation flow rate (a time t2), the mixed water temperature adjusted by the mixing unit 24 is lowered to the hot water supply set temperature, and temperature rising of the hot water supply temperature exceeding the hot water supply set temperature is prevented. By the temperature control, even when a temperature in a hot water supply piping is low at a cold start, the hot water supply path for carrying out hot water supply by using stored heat is long, and radiation loss is large, the rise time can be shortened, and usability can be improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
