| 摘要 |
FIELD: heating systems. ^ SUBSTANCE: invention refers to solar engineering, and namely to solar concentrators with high concentration level. Solar energy concentration method consists in the light flux reflection and concentration at heat receiver; at that the solar energy light flux concentrated at focus axis of cylindrical parabolic concentrator of the 1st stage is directed at a limit angle of full inner refraction to cylindrical parabolic concentrator-lightguide, and 1st stage concentrator focus axis coinciding with concentrator-lightguide focus axis comprises a concentrated solar radiation source for cylindrical parabolic concentrator-lightguide, which, when falling down at limit angle on a parabola-forming surface of cylindrical parabolic concentrator-lightguide, refracts and moves parallel to focus axis on the boundary surface of media of various density, being summed in the direction of light flux throughout the length of cylindrical parabolic concentrator-lightguide with the following transfer of collected solar energy to heat receiver. Device used for method realisation consists of cylindrical parabolic concentrator of the 1st stage with sun tracking device and a cylindrical parabolic absorber with heat receiver. Absorber is made in the form of an optically transparent concentrator-lightguide, the focus axis of which coincides with focus axis of cylindrical parabolic concentrator of the 1st stage; cylindrical parabolic concentrator-lightguide is made from optically transparent two-layer insulating material with various refraction coefficients; at that the first medium accepting light flux from cylindrical parabolic concentrator of the 1st stage is denser than medium of the second layer, the thickness of which exceeds the first medium layer thickness; outer surface of cylindrical parabolic concentrator-lightguide is covered with a reflection and restriction coating. ^ EFFECT: increasing solar energy concentration up to high temperatures at one-time reflection from specular reflector with the following direction change of light flux of solar radiation. ^ 2 cl, 3 dwg |
