| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water heater and a solar heat hot water supply system, accurately calculating heat quantity saved by a solar heat water heater. <P>SOLUTION: The water heater 20 includes: a heat source device 22 to which either one of preheating hot water supplied from the solar heat water heater 10 or mixed hot water obtained by mixing the preheating hot water with cold water supplied from a water pipe 3 is input; and a body case 21 having the heat source device 22 arranged therein. Inside of the body case 21 includes a piping unit 30 at least having a cold water passing pipe 37 in which cold water is made to flow, a hot water delivery pipe 40 in which hot water input to the heat source device 22 is made to flow, a cold water temperature sensor 32 and a hot water temperature sensor 33. The piping unit 30 includes a case 35 integrally storing at least the cold water passing pipe 37, the hot water delivery pipe 40, the cold water temperature sensor 32 and the hot water temperature sensor 33, respectively and having heat resistance and high heat insulating characteristics. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
