Underground energy storage system with double-liquid storage cavity structure
A technology of an energy storage system and a control method, which is applied to geothermal energy power generation, heat collectors that use underground pools to accumulate working fluids, heat storage equipment, etc., and can solve the problem of increased energy storage loss, cost and price increases in energy storage systems, etc. problem, to achieve the effect of improving the ability to transmit energy, reducing the filling volume of working fluid, and improving the value of application and promotion
Pending Publication Date: 2020-04-10
ANHUI UNIVERSITY OF ARCHITECTURE
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Problems solved by technology
However, whether it is an active or passive underground energy storage system, the existing technology mainly satisfies the user's requirements for different energy storage "quantity" and "quality" by increasing the flow of cold and heat sources or the quality of cold and heat sources on the supply side. demand, leading to a sharp increase in the cost and cost of the supply side under the required energy storage target, and further resulting in an increase in the energy storage loss of the energy storage system
Therefore, the current active and passive underground energy storage systems (especially passive underground energy storage systems) still lack the ability to achieve different energy storage "quantity" and "quality" through the self-regulation of the underground energy storage system without changing the given conditions on the supply side. technical means to target
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[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0033] The schematic diagram of the underground energy storage system with double liquid storage cavity structure of the present invention is as follows figure 1 As shown, it includes energy storage body 1, buried energy storage chamber 2, insulation layer 3, heat exchanger 5, fluid pipeline and corresponding data monitoring and control execution system. The energy storage body 1 is provided with a borehole, and the buried energy storage chamber 2 is installed in the borehole, and the upper part of the energy storage body 1 and the buried energy storage chamber 2 is covered with an insulating layer 2 . The buried energy storage cavity 2 is a multi-cavity structure, which is composed of two layers of cavities in the radial direction, the outer layer is the first cavity 4, and the inner layer is further divided into two layers of cavities in th...
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The invention relates to the technical field of underground energy storage, in particular to an underground energy storage system with a double-liquid storage cavity structure. The underground energystorage system comprises an energy storage body, a buried energy storage cavity, an insulating layer and a heat exchanger, wherein the buried energy storage cavity is arranged inside the energy storage body; a vacuum pump is arranged in a second cavity of the buried energy storage cavity and communicates with a telescopic gas cavity through a first gas pipe; the first gas pipe is connected with asecond gas pipe; a first cavity communicates with a third cavity through a third fluid pipe; the upper part of the first cavity communicates with the lower end of a first fluid pipe; the upper end ofthe first fluid pipe is connected with the heat exchanger; the heat exchanger is connected with one end of a second fluid pipe; the other end of the second fluid pipe enters the first cavity; a thirdelectromagnetic valve is arranged on the second fluid pipe; and a variable frequency working medium pump is arranged on a bypass. According to the underground energy storage system with the double-liquid storage cavity structure, the first cavity has an extremely high volume heat exchange coefficient, and high-efficiency heat exchange and energy storage can be achieved; and the third cavity can beused for storing working media and regulating and controlling the liquid quantity of liquid storage cavities at an outer layer in the energy storage process.
Description
technical field [0001] The invention relates to the technical field of underground energy storage, and more specifically relates to an underground energy storage system with a double liquid storage chamber structure and a control method thereof. Background technique [0002] In recent years, underground energy storage systems have received extensive attention at home and abroad because of their good energy storage technical and economic effects and wide application prospects. According to the system drive mode (phase change and water pump) and the circulating heat exchange medium (phase change and non-phase change), underground energy storage systems can be divided into two types: active and passive. Among them, active underground energy storage systems have been widely used, including: underground aquifer energy storage (ATES), buried pipe energy storage (BTES), water tank energy storage (WTES) and gravel-water energy storage (GWES). . Nevertheless, active underground ene...
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Login to View More IPC IPC(8): F24T10/30F28D20/02
CPCF24T10/30F28D20/028F24T2010/56Y02E10/10Y02E60/14
Inventor 陈萨如拉聂玮杨洋
Owner ANHUI UNIVERSITY OF ARCHITECTURE