| 摘要 |
PURPOSE:To efficiently extract heat of a high temperature solid material to the ground when a heat transfer rate of the underground is low. CONSTITUTION:A hole (c) is dug as heat taking-out means 20, for example, at a rock of a high temperature when a heat transfer rate is low as a geothermal heat zone of the underground (b), a small-scale fracture B is formed, and a casing tube 21 having a small hole 22 is fitted to the hole (c). A heat pipe 2 is inserted into the tube 21 via a gap, heating medium pouring means 30 is provided at the tube 21, heating medium (g) is fully filled in the tube 21 and the fracture B, and heat of the rock (f) of the high temperature is continuously taken out by a natural convection. |
