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GB/T 45234.302-2025Solar thermal electric plants - Part 3-2: Systems and components - General requirements and test methods for large-size parabolic-trough collectors (English PDF)

太阳能热发电站 第3-2部分:系统与部件 大尺寸抛物面槽式集热器通用要求与测试方法

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

January 24, 2025

Implementation date

August 1, 2025

Scope

GB/T 45234.302-2025 is the English-translated version of 太阳能热发电站 第3-2部分:系统与部件 大尺寸抛物面槽式集热器通用要求与测试方法.

GB/T 45234.302-2025 — This document describes the performance characteristics and test methods for large parabolic trough collectors. This document covers the optical and thermal performance of parabolic trough collectors and the methods for determining the tracking accuracy of the collector single-axis tracking system.

The test method is only suitable for outdoor testing. This document applies to trough collectors equipped with matching tracking devices. The test methods in this document are not applicable to collectors where the working fluid undergoes phase changes under operating conditions. This document applies to complete collectors.

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Document preview — GB/T 45234.302-2025

National Standard of the People's Republic of China

ICS
27.160
Classification
F 12

Issued by: State Administration for Market Regulation, China National Standardization Administration

Contents

  • Preface
  • 1 Scope
  • 2 Normative references
  • 3 Terms, definitions and symbols
  • 4 Test requirements
  • 5 Measuring instruments
  • 5.1 Solar radiation measurement
  • 5.2 Flow Measurement
  • 5.3 Temperature Measurement
  • 5.4 Wind speed measurement
  • 5.5 Data Collection
  • 5.6 Tracking Accuracy Measurement
  • 6 Test steps
  • 6.1 Sample Description
  • 6.2 Test equipment (installation/assembly/cleaning)
  • 6.3 Measurement Procedure
  • 6.4 Calculation and test results
  • 7 Report Format
  • Appendix A (Informative) Description/Requirements of Parabolic Trough Collectors
  • A.1 General description
  • A.2 Operation Mode
  • Appendix B (Normative) Requirements for the contents of collector description documents
  • B.1 General Configuration of Parabolic Trough Collectors
  • B.2 Geometric characteristics of parabolic trough collectors
  • B.3 Mechanical properties of parabolic trough collectors
  • B.4 Optical performance of parabolic trough collectors
  • B.5 Parabolic Trough Collector Operation Mode Description
  • B.6 Optics and Tracking Accuracy
  • B.7 Requirements for parabolic trough collector components
  • Appendix C (Informative) Test report content requirements
  • C.1 Overview
  • C.2 Collector Characteristics
  • C.3 Collector Limits
  • C.4 Description of the test apparatus
  • C.5 Test Results
  • References

Foreword

This document is in accordance with GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is equivalent to IEC TS 62862-3-2.:2018 "Solar thermal power plants Part 3-2.Systems and components - Large size General requirements and test methods for surface trough collectors.

1 Scope

This document describes the performance characteristics and test methods for large parabolic trough collectors.

This document covers the optical and thermal performance of parabolic trough collectors and the methods for determining the tracking accuracy of the collector single-axis tracking system.

The test method is only suitable for outdoor testing.

This document applies to trough collectors equipped with matching tracking devices.

The test methods in this document are not applicable to collectors where the working fluid undergoes phase changes under operating conditions.

This document applies to complete collectors.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

IEC TS 62862-1-1 Solar thermal electric plants - Part 1-1.Terminology 1.Terminology) Note. GB/T 40104-2021 Terminology of solar thermal power plants (IEC TS 62862-1-1.:2018, IDT) ISO 9488 Solar energy - Vocabulary Note. GB/T 12936-2007 Terminology for solar thermal utilization (ISO 9488:1999, NEQ) ISO 9806:2017 Solar energy - Solar thermal collectors - Test methods)

3 Terms, definitions and symbols

3.1 Terms and Definitions

For the purpose of this document, the terms and definitions defined in ISO 9488 and ISO 9806:2017 apply.

3.2 Notation

The following symbols apply to this document.

beta real. Tilt angle (measured by tilt sensor) (°) rho test. The measured value of the reflectance of the mirror obtained during the test (-) rhonorm. Nominal value of reflectance of the reflector installed in the collector (-) qT. Tilt error of the tracking system (°) FC. Ratio of the product of the reflectance of the mirror and the transmittance of the glass tube measured during the test to the product of the nominal values of reflectance and transmittance creflector. The ratio between the measured value of the specular reflectance of the reflector and the nominal value of the specular reflectance of the reflector

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

Referenced standards

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