GB/T 40614-2021 PDF English
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Technical requirement of performance evaluation for solar thermal power plant
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GB/T 40614-2021: Technical requirement of performance evaluation for solar thermal power plant---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT40614-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.160
CCS F 12
Technical Requirement of Performance Evaluation for Solar
Thermal Power Plant
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: MAY 1, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Overall Requirements ... 6
5 Performance Evaluation of Collector System ... 7
6 Performance Evaluation of Thermal Storage / Exchange System ... 8
7 Performance Evaluation of Generating System ... 8
8 Overall Performance Evaluation of Power Plant ... 9
9 Evaluation Report ... 9
Appendix A (informative) Basic Information of Solar Thermal Power Plant ... 10
Appendix B (normative) Efficiency Calculation Method of Collection Field ... 12
Appendix C (informative) Evaluation Record ... 13
Technical Requirement of Performance Evaluation for Solar
Thermal Power Plant
1 Scope
This document specifies the technical requirements for the performance evaluation of the
collector system, thermal storage / exchange system and power generating system of solar
thermal power plant, and power plant as a whole.
This document is applicable to tower-type, trough-type and linear Fresnel solar thermal power
plant.
2 Normative References
Through the normative references in this text, the contents of the following documents
constitute indispensable clauses of this document. In terms of references with a specified date,
only versions with a specified date are applicable to this document. In terms of references
without a specified date, the latest version (including all the modifications) is applicable to this
document.
GB/T 31464 The Grid Operation Code
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 Solar Thermal Power Plant
Solar thermal power plant refers to a system that converts solar energy into thermal energy and
generates electricity through the thermal power conversion process.
NOTE: generally, it includes collector system, thermal storage / exchange system and power
generating system.
3.2 Collector System
Collector system refers to a system that gathers and coverts solar energy into thermal energy.
3.3 Thermal Storage System
A system that stores and utilizes the heat output by the collector system.
NOTE: It usually consists of heat storage container, heat storage medium, power system,
pressure protection system, auxiliary heater and thermal insulation system.
3.4 Heat Exchange System
Heat exchange system refers to a system that performs heat exchange between a heat transfer
medium and other fluids of different temperatures.
3.5 Generating System
Generating system refers to a system that converts thermal energy into electrical energy.
NOTE: generally, it is composed of steam generation system and equipment, steam turbine
equipment and system, electrical equipment and system, water treatment equipment and
system, etc.
3.6 Efficiency of Collection Field of Point-focus Solar System
Efficiency of collection field of point-focus solar system refers to the ratio of the total energy
obtained by the heat transfer medium from the collection field to the total direct normal solar
radiation incident on the area of the daylight opening of the collection field in a period of time.
3.7 Annual Efficiency of Solar Thermal Power Plant
Annual efficiency of solar thermal power plant refers to the ratio of the power generation of the
solar thermal power plant to the direct normal solar radiation projected on the daylight area of
the collection field in a year.
3.8 Temperature-drop when the Storage Level is 100% during Time “24 h”
Temperature-drop when the storage level is 100% during time “24 h” refers to the temperature
difference from the initial temperature after 24 h when the hot salt tank in the thermal storage
system is full of heat.
NOTE: the unit of the temperature drop when the storage level is 100% during time “24 h” is (C).
3.9 Thermal Energy Storage Hours
Thermal energy storage hours refer to the hours of operation of the solar thermal generator set
at the rated power that can be satisfied by the effective heat released by the thermal storage
system.
3.10 Annual Equivalent Utilization Hours
Annual equivalent utilization hours refer to the ratio of the total power generation (MW h) of
the solar thermal power plant to the total rated power (MW) of the electric generator in a year.
3.11 Annual Water Consumption Rate per kW h
c) operation data documents of at least one full year, such as: power generation,
meteorological data, irradiation data and water consumption, etc.
5 Performance Evaluation of Collector System
5.1 Tower-type
5.1.1 Quality inspection
The quality inspection shall include the following content:
a) inspect whether the appearance of heliostats, heat absorbers, valves and pipelines are
intact and free of defects;
b) inspect whether the inspection and certification reports and exit-factory certificates of
heliostats, heat absorbers and heat transfer media, as well as the system integration
and commissioning reports, and acceptance inspection reports are effective and
complete.
5.1.2 Performance indicators
The performance indicators shall include: the efficiency of collection field of point-focus solar
system, the annual operating hours, the annual failure and outage hours, the number of annual
failures and the mean time between failures, etc. The calculation method of the efficiency of
collection field of point-focus solar system shall comply with Appendix B.
NOTE: the annual operating hours are calculated in accordance with the working hours of the heat
absorber.
5.2 Trough-type
5.2.1 Quality inspection
The quality inspection shall include the following content:
a) inspect whether the appearance of heat collectors, valves and pipelines is intact and
free of defects;
b) inspect whether the inspection and certification reports and exit-factory certificates of
reflectors, collector tubes, rotary joints, actuators and heat transfer media in the
collector system, as well as the system integration and commissioning reports and
acceptance inspection reports are effective and complete.
5.2.2 Performance indicators
The performance indicators shall include: the efficiency of collection field of point-focus solar
system, the annual operating hours, the annual failure and outage hours, the number of annual
failures and the mean time between failures, etc. The calculation method of the efficiency of
collection field of point-focus solar system shall comply with Appendix B.
5.3 Linear Fresnel Type
The linear Fresnel type performance evaluation of the collector system of the solar thermal
power plant may be carried out in accordance with the requirements of the trough-type
performance evaluation of the collector system of the solar thermal power plant.
6 Performance Evaluation of Thermal Storage / Exchange
System
6.1 Quality Inspection
The quality inspection shall include the following content:
a) inspect whether the appearance of storage tanks, heat exchangers, valves and
pipelines are intact and free of defects;
b) inspect whether the inspection and certification reports and exit-factory certificates of
key components of the thermal storage / exchange system, such as: thermal storage
media, storage tanks, heat exchangers and valves, as well as the system integration
and commissioning reports and acceptance inspection reports are effective and
complete.
6.2 Performance Indicators
The performance indicators shall include: the thermal energy storage hours, the temperature
drop when the storage level is 100% during time “24 h”, the annual wastage of the thermal
storage / exchange media, the efficiency of the heat exchanger, the annual operating hours, the
annual failure and outage hours, the number of annual failures and the mean time between
failures, etc.
7 Performance Evaluation of Generating System
7.1 Quality Inspection
The quality inspection shall include the following content:
a) inspect whether the inspection and certification reports of key equipment and systems,
such as: steam turbines and generators, as well as the system integration and
commissioning reports, and test and acceptance inspection reports are effective and
complete;
b) whether the grid-connected operation of the steam turbine generator set complies with
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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