T/CRES 0002-2018 Active Group standards

T/CRES 0002-2018 Sun-tracking accuracy measurement method using a sun-tracking reflector

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 0002-2018

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Isotopes and radioactive sources

ICS Name: Solar energy engineering

Publish Date: 2018-10-08

Implement Date: 2018-10-08

Scope

Scope: This standard specifies the measurement and evaluation methods for the tracking accuracy of solar heliostats. This standard applies to heliostats of different sizes and with different drive modes that reflect and concentrate the direct solar radiation onto a fixed position; Main technical content: Terms and definitions. The following terms and their definitions apply to this document. 1. Heliostat azimuth-elevation tracking: A type of two-axis tracking. One of the two rotating axes of the heliostat is fixed vertically relative to the ground, and the other is fixed horizontally relative to the mirror surface. The heliostat rotates around the two axes in a two-dimensional manner, tracking the solar motion and concentrating the solar radiation onto the target. 2. Heliostat tracking accuracy (or tracking error): The angle between the geometric center of the pattern formed on the target surface by the concentrated solar radiation and the target point on the target surface relative to the rotation center of the heliostat, expressed as the root mean square (RMS) of multiple measurement values, with units in mrad. 3. Heliostat tracking precision: The angle between the rotation center of the heliostat and the geometric center of the pattern formed on the target surface by the concentrated solar radiation relative to the average geometric center of the pattern during the test period, expressed as the root mean square (RMS) of multiple measurement values, with units in mrad. 4. Receiver aperture: The entrance or open port of the receiver that absorbs solar radiation.