Ground source cooling apparatus for solar energy electricity generating system

Abstract

A ground source cooling apparatus applied to a solar power generation system. The apparatus includes a circulating medium ( 2 ) and an underground circulation cooling system ( 1 ), the underground circulation cooling system ( 1 ) is arranged below the ground surface, through the soil below the ground surface absorbing heat caused by the circulating medium, and through the ground surface releasing heat to the environment, so that to achieve the purpose of decreasing the temperature of the circulating medium. The apparatus can take the maximum advantage of land area occupied by the solar power generation system, which has features of low construction cost, simple and reliable operation, thus overcoming the limitations that a steam turbine cooling system in solar thermal power generation technology can only adopt the air-cooling technology in a specific area.

What is claimed is: 
     
         1 . A ground source cooling apparatus applied to a solar power generation system, comprising a circulating medium and an underground circulation cooling system, wherein, the underground circulation cooling system is arranged below the ground surface, through the soil below the ground surface absorbing heat caused by the circulating medium, and through the ground surface releasing heat to the environment, so that to achieve the purpose of decreasing the temperature of the circulating medium,
 wherein the underground circulation cooling system is a heat exchange pipeline arranged in an array in the soil below the ground surface in a shaded area of the solar power system.   
     
     
         2 . The ground source cooling apparatus applied to a solar power generation system according to  claim 1 , further comprising a double-loop heat exchange system for performing a double-loop cooling circulation. 
     
     
         3 . The ground source cooling apparatus applied to a solar power generation system according to  claim 2 , wherein the double-loop heat exchange system condenses and cools a first circulating medium heat source entering a first loop, and the heat given off is carried away by a second circulating medium cold source circulating in a second loop, and then absorbed by the soil below the ground surface and released to the environment when flowing through the underground circulation cooling system. 
     
     
         4 . The ground source cooling apparatus applied to a solar power generation system according to  claim 1 , wherein the ground source cooling apparatus is applied to a solar thermal power generation system, and the circulating medium is a thermodynamic cycle working medium of a steam turbine unit. 
     
     
         5 . The ground source cooling apparatus applied to a solar power generation system according to  claim 1 , wherein the ground source cooling apparatus is applied to a photovoltaic power generation system, and the circulating medium performs circulation cooling to a photovoltaic cell directly or indirectly. 
     
     
         6 . The ground source cooling apparatus applied to a solar power generation system according to  claim 5 , wherein the ground source cooling apparatus is applied to a concentrating photovoltaic power generation system, and the circulating medium performs circulation cooling to a concentrating photovoltaic cell directly or indirectly. 
     
     
         7 . The ground source cooling apparatus applied to a solar power generation system according to  claim 1 , wherein the heat exchange pipeline is a plastic pipeline. 
     
     
         8 . The ground source cooling apparatus applied to a solar power generation system according to  claim 7 , wherein the plastic pipeline is a pipeline of polyethylene-type, such as PE, PE-X or PE-RT. 
     
     
         9 . The ground source cooling apparatus applied to a solar power generation system according to  claim 1 , wherein the heat exchange pipeline is vertically buried in the soil, and arranged as a whole in a single U-shaped structure or a dual U-shaped structure. 
     
     
         10 . The ground source cooling apparatus applied to a solar power generation system according to  claim 1 , wherein the heat exchange pipeline is horizontally buried in the soil of the ground surface. 
     
     
         11 . The ground source cooling apparatus applied to a solar power generation system according to  claim 2 , wherein the second circulating medium in the double-loop heat exchange system is liquid water. 
     
     
         12 . The ground source cooling apparatus applied to a solar power generation system according to  claim 11 , wherein the liquid water of the second circulating medium contains an anti-freezing agent. 
     
     
         13 . The ground source cooling apparatus applied to a solar power generation system according to  claim 1 , wherein the heat exchange pipeline is arranged in the soil below the ground surface in a Fresnel array mirror field or a trough solar energy mirror field. 
     
     
         14 . The ground source cooling apparatus applied to a solar power generation system according to  claim 13 , wherein agricultural planting is performed on the soil above the ground surface of the heat exchange pipeline. 
     
     
         15 . The ground source cooling apparatus applied to a solar power generation system according to  claim 1 , comprising a circulation-assistant apparatus, wherein the circulating medium enters the underground circulation cooling system driven by the circulation-assistant apparatus.