T/CRES 0003-2018 Active Group standards

T/CRES 0003-2018 Measurements of solar concentrator facet performance method

Publish Date: 2018-10-08 Implement Date: 2018-10-08 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CRES 0003-2018

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Energy

ICS Name: Solar energy engineering

Publish Date: 2018-10-08

Implement Date: 2018-10-08

Scope

Scope: This standard specifies the measurement method for the surface shape performance of solar concentrators. This standard applies to the measurement of the surface shape performance of solar concentrators; Main technical content: 3 Terms and Definitions The terms and definitions established in GB/T 12936 and GB/T 26972 and the following terms and definitions apply to this standard. 3.1 Slope deviation The deviation between the measured value and the theoretical value of the normal direction of the concentrator surface. 3.2 Intercept factor In the solar concentrating and collecting system, the ratio of the energy received by the absorber to the total energy converged by the concentrator. 4 Technical Requirements Technical Requirement 1: The slope deviation of the sampling points on the concentrator surface in the x and y directions of the concentrator coordinate system. Draw a slope deviation distribution chart and calculate the root mean square value of the slope deviation, which should be ≤3 mrad. Technical Requirement 2: Without considering the influence of the solar divergence angle, conduct ray tracing on the concentrator. The number of rays traced should be equal to the number of sampling points on the concentrator surface. The traced rays should be a parallel beam of light and should be incident parallel to the optical axis of the concentrator. After being reflected by the concentrator, the rays should intersect the receiving surface, which is located at the theoretical focal point or focal line of the concentrator. The shape and size of the receiving surface should be equal to the theoretical value. Calculate the percentage of the number of intersections of the traced rays with the receiving surface to the total number of traced rays, which should be ≥99.6%. Technical Requirement 3: Considering the influence of the solar divergence angle, conduct ray tracing on the concentrator. The number of rays traced should be equal to the numb