WATER INJECTION CONTROL SYSTEM, UNDERGROUND HEAT UTILIZATION SYSTEM, CONTROL DEVICE, CONTROL METHOD, AND PROGRAM

To provide a water injection control system, an underground heat utilization system, a control device, a control method, and a program that can enhance reliability of water injection control.SOLUTION: A water injection control system comprise a pressure regulating valve for regulating water injection to a well from a main pipe extending inside the well, in association with a water injection pressure from an auxiliary pipe, a water injection solenoid valve for regulating water injection to the auxiliary pipe, and a drainage solenoid valve for regulating drainage to a drainage pipe branching between the water injection solenoid valve and the pressure regulating valve, from the auxiliary pipe.SELECTED DRAWING: Figure 2 【課題】注水制御の信頼性を高めることができる注水制御システム、地中熱利用システム、制御装置、制御方法、及びプログラムを提供する。【解決手段】注水制御システムは、副配管からの注水圧に関連して、井戸の内部に延びる主配管から井戸への注水を調整する調圧弁と、副配管への注水を調整する注水電磁弁と、副配管から、注水電磁弁と調圧弁との間で分岐している排水管への排水を調整する排水電磁弁と、を備える。【選択図】図２