BOREHOLE-TYPE SEASONAL HEAT STORAGE SYSTEM CAPABLE OF SELECTING HEAT STORAGE SPACE ACCORDING TO SUPPLY TEMPERATURE OF HEAT SOURCE

摘要

Provided is a borehole-type seasonal heat storage system and, more particularly, to a borehole-type seasonal heat storage system capable of selecting a heat storage space according to a supply temperature of a heat source, wherein a first heat storage tube member is formed to comprise a supply tube and a recovery tube, which are formed in ring types, respectively, and to have a U-shaped vertical tube connected to the bottom surface thereof such that the same is inserted into a borehole; an n^th heat storage tube member is formed to have a supply tube and a recovery tube, which have diameters larger than those of the supply tube and the recovery tube of the first heat storage tube member, respectively; the n^th heat storage tube member is arranged outside the first heat storage tube member at an appropriate interval, thereby forming a seasonal heat storage body; the supply temperature of a heat source flowing into a main supply tube and the underground temperature of each part of the seasonal heat storage body are measured; and, according to the supply temperature of the heat source, heat is supplied to the first heat storage tube member or the n^th heat storage tube member, which has the corresponding temperature, and is stored, thereby improving the heat storage performance.