Active thermal storage using the ground underlying a solar pond

摘要: An apparatus is presented for actively using the ground underlying a solar pond storage of heat accumulated in pond. Heated water will be injected down shallow wells and percolated through soil. Recovery usually just reverse this injection. With invention both major components perform better than they would alone. Solar ponds now have huge, cheap, thermal without requiring extra brine. In addition, insulated by overlying so losses low recovery efficiency quite high. Embodiments basic strategy--thermal permeable material pond--can economically adapted to wide variety applications locations. For example, where impermeable rock underlies site should designed with very deep, lined bottom zone filled gravel. A small amount brine fill circulate voids This embodiment also gives large desired.