34results about How to "Solve ecological and environmental problems" patented technology

The application discloses a downhole turbulence type heat transfer strengthening system for single well closed geothermal exploitation, which comprises a downhole well tube, a single well closed heat exchange device, a ground heat utilization device and an in-well hydraulic disturbance device, the downhole well tube is at least partially buried underground, the downhole well tube comprises a closed well section and an open well section, the closed well section is in contact with a non-target stratum, and the open well section is in contact with and communicates with a target stratum; the single well closed heat exchange device is at least partially provided with a pipeline in the downhole well tube, and at least part of the pipeline is in contact with and exchanges heat with fluid in the downhole well tube; the ground heat utilization device is used for generating power, heating or / and refrigeration by using heat or / and cold provided by the single well closed heat exchange device; and the in-well hydraulic disturbance device is used for changing the liquid pressure size of the bottom of the closed well section, so that fluid in the target stratum and fluid in the open well section periodically and controllably reciprocate, so as to increase the heat obtained by the single well closed heat exchange device.