THE UNDERGROUND STORE FOR THERMAL ENERGY

Abstract

Heat can be stored in ground waters, which fill up old mining
workspaces, and in aquifers of slow migrating waters. The
most effective, however, would be use of especially constructed
tank reservoirs inside existing mining openings either underground
or in open pits. The delivery of heat to the store can be
done with use of heat exchangers or by direct injection of hot
water. Recovery of stored heat will be possible through heat
exchangers operating in a reverse-circulation mode or, by direct
pumping out of hot water from the store space.