Thermal energy storage device

Abstract

The present invention relates to a thermal heat storage device. According to one aspect of the present invention, the thermal heat storage device comprises: a Fresnel lens for concentrating incident light to output the same; a heat collection port located at a lower part of the Fresnel lens to receive the incident light concentrated by the Fresnel lens; a heat pipe of which a portion is inserted into the heat collection port, and which has a heating medium, changing from a liquid state to a gaseous state by the heat collected by the heat collection port, filled therein; a heat-dissipation plate mounted on the outer surface of a portion of the heat pipe to radiate, to the outside, the heat of the heat pipe heated by the heating medium in the gaseous state; a heat exchange unit having the heat-dissipation plate therein and has a heat transfer liquid, which is heated by the heat radiated by the heat-dissipation plate, filled therein; and a heat storage tank connected to the heat exchange unit to receive and store the heated heat transfer liquid of the heat exchange unit and to output, to the heat exchange unit, the heat transfer liquid of which the heat is lost.

What is claimed is: 
     
         1 . A thermal energy storage device, comprising:
 a Fresnel lens which is able to collect and output an incident light;   a heat collection unit which is disposed below the Fresnel lens and is configured to receive the incident light which is collected by the Fresnel lens;   a heat pipe an end of which is partially inserted inside the heat collection unit, wherein the heat pipe is filled with a heat transfer medium which converts from a liquid state to a gaseous state by the heat collected by the heat collection unit;   a heat-dissipation plate which is installed at an outer surface of a part of the heat pipe and is configured to radiate the heat of the heat pipe which is heated by the heat transfer medium which is in the vaporized state;   a heat exchange unit which is provided with the heat-dissipation plate and is filled with a heat transfer liquid which is heated by the heat radiated from the heat-dissipation plate; and   a heat storage tank which is connected to the heat exchange unit and is configured to receive and store the heat transfer liquid of the heat exchange unit and output the heat-lost heat transfer liquid to the heat exchange unit.   
     
     
         2 . The device of  claim 1 , wherein the heat pipe is disposed slanted upward toward the heat-dissipation plate and between the heat collection unit and the heat-dissipation plate. 
     
     
         3 . The device of  claim 1 , wherein the heat collection unit is installed at a focal position of the Fresnel lens. 
     
     
         4 . The device of  claim 1 , further comprising:
 first and second circulation pipes which are connected between the heat exchange unit and the heat storage tank and are configured to circulate the heat transfer liquid between the heat exchange unit and the heat storage tank.   
     
     
         5 . The device of  claim 1 , wherein the heat collection unit is coated with an aluminum nitride. 
     
     
         6 . The device of  claim 1 , further comprising:
 a concave reflection mirror which is disposed below the heat collection unit and is configured to cover the heat collection unit and reflect the light which has passed through the Fresnel lens, toward the heat collection unit.