HEAT STORAGE SYSTEM

Japanese Patent JP3785496

B2

PROBLEM TO BE SOLVED: To provide a heat storage system where heat utilization combined with daily cycle heat storage can expect economical propriety, in a heat storage system which utilizes an underground water-bearing water as the heat source of an air conditioner and a heat pump. SOLUTION: This heat storage system is provided with a heat source well 2 which has a water bearing layer at an average underground temperature, a low-temperature well 3 which has a water-bearing layer at lower temperature than the average under ground temperature, and a high-temperature well 4 which has a water-bearing layer at high temperature than the average underground temperature, in such arrangement that they do not interfere with one another within the site 1 of a building, and this operates, selecting a pumping well and a reduction well in a cooling mode, a heating mode, and a heat accumulating mode at night, for heat source of an air conditioner and a heat pump, so that it may be proper for energy saving, cost saving, and system maintenance.