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GB/T 33698-2017Solar energy resources measurement—Direct radiation (English PDF)

太阳能资源测量直接辐射

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 12, 2017

Implementation date

December 1, 2017

Scope

GB/T 33698-2017 is the English-translated version of 太阳能资源测量直接辐射.

GB/T 33698-2017 describes how direct radiation is observed when solar energy resources are measured. It sets the requirements for the observing site, the measuring instruments, the installation and maintenance of those instruments, the collection of the measurement data and the processing of that data.

A normative annex gives the style of the monthly report for solar resource direct radiation observations.

Clause 3 defines solar energy resource, direct radiation, height angle, irradiance and irradiation, taking the definitions from GB/T 31163-2014, and notes that irradiance is expressed in watts per square metre and irradiation as a total over a given period.

The standard applies to the measurement of direct radiation in solar energy resource measurement and cites QX/T 20. Issued on 12 May 2017, it has applied since 1 December 2017.

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Document preview — GB/T 33698-2017

National Standard of the People's Republic of China

ICS: 07.060
Classification: A 47

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 normative reference document
3 Terms and definitions
4 Observatory Site Requirements
5 measuring instruments
7 Survey data collection
Appendix A (Normative Appendix) Solar Resources (Direct Radiation) Observations Monthly Report Style
Reference

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the observing site requirements for direct radiation measurement in solar energy measurement, the installation and maintenance of measuring instruments, the number of measurements According to the collection and measurement data processing.

This standard is applicable to the measurement of direct radiation in solar energy measurement.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.

QX/T 20 direct radiation table

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Solar resources

Can be converted into heat, electricity, chemical energy for human use of solar energy. [GB/T 31163-2014, definition 2.2]

3.2 Direct radiation

From the surface and its surrounding a small solid angle emitted within the radiation. [GB/T 31163-2014, definition 5.11]

3.3 Height angle

In a place where the celestial bodies on the circle, the celestial bodies and the gap between the horizon. [GB/T 31163-2014, definition 3.17]

3.4 Irradiance

Objects in the unit time, the unit area to receive the radiation energy.

Note: The irradiance is measured in watts per square meter (Wm-2). [GB/T 31163-2014, definition 6.3]

3.5 Irradiation

The total amount of irradiance for a given period of time.

Note 1: The amount of irradiation is measured in joules per square meter (J · m-2).

Note 2: In the past, the amount of exposure used in the field of solar energy is not recommended. [GB/T 31163-2014, definition 6.5]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

QX/T 20

Cited by

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