Closed-circulation type heat exchange amount increasing system device for mid-deep layer ground source well

Abstract

The invention relates to a closed-circulation type heat exchange amount increasing system device for a mid-deep layer ground source well. The system device solves the technical problems such as low heat exchange efficiency of an existing mid-deep layer ground source system. The closed-circulation type heat exchange amount increasing system device comprises a vertical sleeve type buried pipe; an outer sleeve is connected with an ice making bucket through a pressurizing pump; the ice making bucket is connected with a low-temperature ice making structure; the ice making bucket is connected with an evaporator of a ground source heat pump unit through a freezing water pump; the evaporator of the ground sour heat pump unit is connected with a condenser; an inner sleeve of the vertical sleeve type buried pipe is correspondingly connected with the evaporator of the ground source heat pump unit and a low-temperature refrigerating compressor unit of a low-temperature refrigerating structure; a high-temperature refrigerating compressor is arranged between the evaporator of a high-temperature ground source heat pump and the condenser; and the condenser is used for transmitting heat to the tailend of a user side through a heat supply hot water pump. The closed-circulation type heat exchange amount increasing system device provided by the invention has the advantages of increasing the heattaken by the water in circulation and flowing inside the ground source well and farther exploring the utilization potential of terrestrial heat of mid-deep layers.

Description

technical field [0001] The invention belongs to the field of ground source heat pumps, and in particular relates to a closed circulation heat exchange lifting system device for medium and deep ground source wells. Background technique [0002] As a green, low-carbon, inexhaustible renewable energy, geothermal energy has been paid more and more attention. Medium-deep geothermal energy is the most valuable and potential source in the field of thermal applications, mainly referring to the thermal energy resources contained in strata 2-3km underground with a temperature of 70-90°C or even higher. Medium-deep geothermal energy has sufficient heat sources, high usable value, will not pollute the environment, and can be applied all-weather and all-time. It has the characteristics of green and low-carbon, clean and safe, large reserves, wide distribution, and good stability. [0003] As far as the current situation is concerned, the temperature difference for the effective use of m...

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Problems solved by technology

[0005] Although the above scheme has alleviated the problem of low heat exchange efficiency of the mid-deep geothermal energy heat exchange system to a certain extent, this scheme still has the following problems: the structural stability of the heat exchange device is poor, and the heat exchange capacity per unit volume of the circulating medium is small

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