High-efficient underground heat exchanging device of closed type single well circulating ground source heat pump

Abstract

The invention discloses a high-efficient underground heat exchanging device of a closed type single well circulating ground source heat pump. The high-efficient underground heat exchanging device is provided with a leakage and leakage control system, wherein the leakage and leakage control system is composed of a leakage pipe, a micropunch, an anti-blocking device, a distributor, a connecting pipe, a layered antipercolator, a rock soil temperature and humidity sensor, a rock soil temperature and humidity monitoring device, a pressurizing device and a controller; the leakage and leakage control system can transmits temperature and humidity parameters measured by the rock soil temperature and humidity sensor to the rock soil temperature and humidity monitoring device; the rock soil temperature and humidity monitoring device can send a start-stop signal to the controller according to differences between a measured value and a set value; when signal differences exist, the rock soil temperature and humidity monitoring device starts the pressurizing device to supplement water for underground rock soil through the connecting pipe, the distributor and the leakage pipe, so that the heat conduction capacity of underground rock soil is improved to realize the purpose of improving the heat exchanging capacity; and in addition, a turbulent flow device is further arranged to enhance heat convection of a heat exchanging medium and the pipe wall of a heat exchanging well.

Description

technical field [0001] The invention relates to a high-efficiency underground heat exchange device for a soil source heat pump, in particular to a heat exchange device that can be used in a closed single-well circulation to adjust the underground heat and humidity environment in water-poor or water-deficient areas and improve the performance of the single-well circulation heat exchange. Background technique [0002] Single well circulation is a form of ground water source heat pump. At present, there are two types of single circulation wells: pumping and irrigation in the same well and grain filling in the same well. It is an open system, both of which extract ground water and exchange heat with the ground source heat pump unit, and then recharge it to the ground. This kind of well has high heat exchange efficiency, but due to the limitation of groundwater resources, it cannot be used in areas with no water or poor water. In areas with groundwater, it is not widely used due ...

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Problems solved by technology

This kind of well has high heat exchange efficiency, but due to the limitation of groundwater resources, it cannot be used in areas with no water or poor water. In areas with groundwater, it is not widely used due to the strict control of groundwater resources (prevention of groundwater pollution). It is used in most areas. At the same time, the current pumping and irrigation wells have the problem of thermal penetration, and the same well for filling grains has difficulty in recharging after long-term operation due to blockage of grain fillings.

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