| 摘要 |
PURPOSE:To increase the surface area of heat exchange by a method wherein a plurality of air flow passages extending vertically are arranged parallel to each another between a pair of panels opposing to each other at a predetermined interval and the passages are made to communicate with one another at the lower ends of the panels. CONSTITUTION:The air flow passages are formed between the pair of panels 7 and 8 arranged opposite to each other at a predetermined interval in such a manner that the panels 7 and 8 are bonded together at a plurality of partitioning sections 9. Such air flow passages are classified into air supply passages 10 and air exhaust passages 11 in an alternative fashion and the passages 10 and 11 are made to communicate with each other through communication holes 12 at positions near the lower ends of the partitioning sections 9, respectively. The underground heat exchanger thus formed is embedded in the ground in such a manner that a metal fitting 13 for sinking the heat exchanger into the ground is fitted on the lower end of the heat exchanger, a metallic driving jig 14 is fitted on the upper end of the heat exchanger and the heat exchanger is driven into the ground by giving a blow at the head of the jig 14. After that, the jig 14 is taken off, air is supplied into the heat exchanger through the air supply is taken off, air is supplied into the heat exchanger through the air supply passages 10 so as to make it exchange heat with the soil and is discharged from the air exhaust passages 11. |
