| 摘要 |
A roof water piping is provided to reduce energy consumption by installing water pipes at a roof of a building. A roof water piping comprises a water inlet(1) and a hot water outlet(2). Water is supplied to the water inlet such that the water is discharged into the hot water outlet by passing through roof pipes. Water supplied to the water inlet has a room temperature. While the water circulates from the water inlet to the hot water outlet, the water is heated by absorbing solar heat collected in a roof. Heat exchanges between the water having a room temperate and the roof, so that hot water is produced and simultaneously the roof is cooled. |
