Cross-seasonal Storage of Solar Energy

Cross-seasonal energy storage in monimolimnion: By the feature of stagnancy of underground water in a certain depth, two wells are drilled in the depth of 200m, then extra heat energy is stored into hot water well from solar collectors by heat exchanger in spring and autumn, and then is consumed in winter, and at the same time, cold water goes down to the other well for summer cooling. This technology achieves energy-saving greatly, namely, 35% for cooling, while 40% for heating.