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GB/T 37525-2019 English PDF

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GB/T 37525-2019: Calculation guideline for solar direct radiation
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PDF similar to GB/T 37525-2019


Standard similar to GB/T 37525-2019

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Basic data

Standard ID GB/T 37525-2019 (GB/T37525-2019)
Description (Translated English) Calculation guideline for solar direct radiation
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A47
Classification of International Standard 07.060
Word Count Estimation 18,167
Date of Issue 2019-06-04
Date of Implementation 2020-01-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 37525-2019: Calculation guideline for solar direct radiation

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Calculation guideline for solar direct radiation ICS 07.060 A47 National Standards of People's Republic of China Direct solar radiation calculation guidelines Published on.2019-06-04 2020-01-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 symbol 4 5 Calculation method 5 6 Calculation results test 7 Appendix A (informative appendix) Calculation method of extrasolar solar radiation 9 Appendix B (Normative) Conversion between direct horizontal radiation and normal direct radiation 12 Appendix C (informative appendix) Calculation method for direct solar radiation test indicators 14 Reference 15

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Meteorological Administration. This standard is divided by the National Climate and Climate Change Standardization Technical Committee Wind Energy Solar Climate Resources Subcommittee (SAC/ TC540/SC2). This standard was drafted. Public Meteorological Service Center of China Meteorological Administration and Wind Energy Solar Resource Center of China Meteorological Administration. The main drafters of this standard. Shen Yanbo, Zhang Yue, Wang Xiangyun, Zhao Xiaodong. Direct solar radiation calculation guidelines

1 Scope

This standard gives the basic principles of direct solar radiation calculation, calculation methods and scope of application under different conditions, and calculation results. Inspection requirements. This standard applies to the calculation of direct radiation in the horizontal plane and direct radiation in the normal direction.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 33698-2017 Solar energy resources measure direct radiation GB/T 34325-2017 Solar resource data accuracy evaluation method

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Direct radiation directradiation Radiation from a small solid angle around the sun and its surroundings. [GB/T 31163-2014, definition 5.11] Note. In general, direct radiation is measured by an instrument with an angle of view of approximately 5°, while the field of view of the day itself is only about 0.5°, so it includes around the sun. Part of the scattered radiation, that is, the ring radiation. 3.2 Normal direct radiation Direct radiation received on a plane perpendicular to the sun's rays. [GB/T 31163-2014, definition 5.12] Note. In terms of numerical value, direct radiation is the same as normal direct radiation; the difference between the two is that direct radiation is defined from the perspective of the sun. Direct radiation is defined by the angle of incidence from the surface. 3.3 Direct horizontal radiation directhorizontalradiation Direct radiation received on a horizontal plane. [GB/T 31163-2014, definition 5.13] 3.4 Scattering radiation Solar radiation is dispersed by air molecules, clouds, and various particles in the air into non-directional radiation that does not change its monochromatic composition. [GB/T 31163-2014, definition 5.14] 3.5 [horizontal] total radiation global[horizontal]radiation The sum of direct and scattered radiation received by the horizontal plane from the upper 2π solid angle (hemisphere).

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