Gradient utilization enhanced geothermal system

Abstract

The invention relates to the technical field of geothermal systems, in particular to a gradient utilization enhanced geothermal system which can conduct gradient comprehensive utilization on geothermal energy, improves the geothermal utilization rate and saves energy. The gradient utilization enhanced geothermal system comprises a geothermal collecting device, a first-grade heat exchange device, afirst-grade utilization device, a second-grade heat exchange device, a second-grade utilization device, a third-grade heat exchange device, a third-grade utilization device, a capillary network system, a temperature control device, a water collecting tank and a geothermal recharging device. The gradient utilization enhanced geothermal system utilizes the geothermal energy as the heat source, andthe geothermal energy is clean and reproducible; gradient comprehensive utilization of the geothermal energy can be achieved, the geothermal utilization rate is improved, and energy is saved; screw pumps are arranged in the heat exchange devices, so that the heat exchange efficiency is improved; fixed trays and movable trays in bins can fix vegetables and fruits, under the driven of rotating rods,the drying process is accelerated; and the layered capillary network system is arranged in the bins, and uniform heating and drying of crops are facilitated.

Description

technical field [0001] The invention relates to the technical field of geothermal systems, in particular to an enhanced geothermal system (EGS) capable of cascading comprehensive utilization of geothermal energy, improving geothermal utilization, and saving energy, especially an enhanced geothermal system (EGS) for cascaded utilization. Background technique [0002] In the season of vegetable harvest, once there is a problem of slow sales or continuous rainy weather, a large number of vegetables will rot because they cannot be kept fresh, causing considerable economic losses to farmers. For this reason, farmers can dry and dehydrate vegetables to make dried vegetables for sale. The dehydrated vegetable processed products have low water content, which can effectively inhibit the activity of microorganisms and enzymes in the tissue, so the storage period is prolonged, and the volume and weight are reduced, which is convenient for storage and transportation. Usually, the moist...

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Problems solved by technology

Coal burning will pollute the environment; although fuel oil is an energy source, it also emits pollutants of different magnitudes, the cost of use is high, and it has no promotion value

[0006] The use time of the grain dryer is limited. It can only be used for dozens of days a year during the busy farming season, and it can only be idle at other times, resulting in waste of resources, low return on investment, and difficult promotion.

[0007] At present, the crop drying equipment on the market often only has the drying function. After the crops are dried, they need to be transferred and stored in the granary. During the transfer process, the moisture in the air will be sucked in, resulting in mildew and germination in the granary.

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