| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a snow melting apparatus which stabilizes a flow rate of a heat medium which flows in a hot water supply device. <P>SOLUTION: A snow-melting apparatus 1 comprises a bypass pipe 18 provided between a second return pipe 9 in which an antifreeze liquid flows after circulating a snow melting target area 6 and a feed pipe 17 which feeds the snow melting target area 6 with the antifreeze liquid heated by hot water supply devices 2 through 4. A hot water supply device-side pump 31 is provided to a third return pipe 10 for feeding the hot water supply devices 2 through 4 with the antifreeze liquid. A heat radiation side pump 32 is provided to the bypass pipe 18. If channel resistance of a heating pipe 19 changes or viscous resistance of the antifreeze liquid changes in association with temperature, the flow rate of the antifreeze liquid flowing in the third return pipe 10 is controlled by changing the performance of the hot water supply device-side pump 31, whereby the antifreeze liquid can be stably fed to the hot water supply devices 2 through 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
