THICK TUBE LATERAL INSTALLATION INCLINATION CONVECTION CURRENT TYPE UNDERGROUND HEAT EXCHANGER, THICK TUBE LATERAL INSTALLATION INCLINATION CONVECTION CURRENT TYPE UNDERGROUND HEAT EXCHANGING DEVICE AND THEIR INSTALLATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an underground heat exchanger that can be installed in a narrow land, and improve an efficiency of heat transfer from soil so as to downsize a device, and so as to reduce an occupied area, installation expenditure as well as operation expenditure of the device.SOLUTION: A thick tube lateral installation inclination convection current type underground heat exchanger of this invention is a metallic straight pipe buried in the underground in an inclined laterally laid state. Both ends thereof are sealed at two end surfaces crossing a long axis at a right angle, with upper and lower part thermal medium outlet/inlet and a lower part thermal medium outlet/inlet arranged at an upper part of a top end surface on a higher end side and at a lower part of a bottom end surface on a lower end side, respectively. A sectional area of the inside part of the straight pipe is 314 cmor more, a ratio between a clearance between the upper end surface and the lower end surface and a level difference is in a range of 3:1 to 100:1 and either a concrete layer or a mortar layer is arranged around the straight pipe.SELECTED DRAWING: Figure 1