Solar energy and geothermal energy mixed energy supply system

Abstract

The invention relates to a solar energy and geothermal energy mixed energy supply system which comprises a solar heat collector, a geothermal well, a geothermal heat collecting pump, geothermal heat collecting pipes, an insulating buffer tank, a heat energy conversion device, a waste heat recovery device, circulating pipes, a circulating pump and a control system, wherein the geothermal well communicates to one geothermal heat collecting pipe and one circulating pipe; the geothermal heat collecting pipes communicate to the solar heat collector through the geothermal heat collecting pipes, thesolar heat collector communicates to the heat energy conversion device through a flow guide pipe, the heat energy conversion device is connected to at least one waste heat recovery device through theflow guide pipe, and the waste heat recovery devices communicate to the circulating pipes through the circulating pump. The solar energy and geothermal energy mixed energy supply system provided by the invention can meet the demand of collecting and operating geothermal energy and solar energy synchronously effectively on the one hand, and has a good resource cyclic utilization ability on the other hand, so that phenomena that the resources are lost, the underground geologic structure is damaged as a result of exploiting geothermal resources and like are avoided.

Description

technical field [0001] The invention relates to a geothermal exploitation equipment, in particular to a solar geothermal energy hybrid energy supply system. Background technique [0002] At present, in the exploitation of geothermal resources, the water temperature in the collected geothermal resources is often relatively low, the utilization value is not large, and the comprehensive utilization rate is relatively poor. To obtain geothermal resources with high thermal energy, it is necessary to increase the exploitation of geothermal resources depth, increasing construction and mining costs, thus greatly limiting the comprehensive utilization of current geothermal resources. It mainly uses solar power to generate electricity, and then provides driving power for the geothermal energy collection system. Although it can reduce the dependence on the grid and the loss of power supply from the grid during the operation of the geothermal system, the comprehensive utilization rate o...

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Problems solved by technology

[0002] At present, in the exploitation of geothermal resources, the water temperature in the collected geothermal resources is often relatively low, the utilization value is not large, and the comprehensive utilization rate is relatively poor. To obtain geothermal resources with high thermal energy, it is necessary to increase the exploitation of geothermal resources depth, increasing construction and mining costs, thus greatly limiting the comprehensive utilization of current geothermal resources. It mainly uses solar power to generate electricity, and then provides driving power for the geothermal energy collection system. Although it can reduce the dependence on the grid and the loss of power supply to the grid during the operation of the geothermal system, the comprehensive utilization rate of solar energy is relatively low, and it cannot effectively solve the problem of geothermal energy. Thermal energy resources have small heat and are difficult to develop and utilize. At the same time, the current development and utilization of geothermal energy has led to a large number of geological structure changes, which can easily lead to secondary geological disasters such as surface deformation, which poses a serious security threat to surface buildings. Therefore, in response to this situation, it is urgent to develop a new geothermal resource extraction system to meet the needs of actual use.

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