GB/T 40284-2021Guide for energy saving test of waste heat recovery system in power plant (English PDF)
发电厂余热回收系统节能量检测试验导则
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 21, 2021
Implementation date
December 1, 2021
Scope
GB/T 40284-2021 is the English-translated version of 发电厂余热回收系统节能量检测试验导则.
GB/T 40284-2021 is a guide to testing how much energy a waste heat recovery system saves in a thermal power plant. It sets out the general requirements, the preparations to make before the test, what is tested and how the energy saving is calculated from the results.
It applies to systems that recover exhaust steam heat from steam turbines, whether by heat pump, steam ejector or high back pressure heating, to systems that recover flue gas heat after the boiler air preheater with low-temperature economizers or water heat medium air preheaters, and to flue gas bypass heat cascade systems around the air preheater.
Measurements rely on GB/T 2624 for flow, GB/T 8117.4 for turbine thermal performance and GB/T 10184 for boiler performance tests. It was issued on 21 May 2021 and has applied since 1 December 2021.
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Document preview — GB/T 40284-2021
National Standard of the People's Republic of China
- ICS
- 27.100
- Classification
- F 20
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General requirements
- 5 Preliminary preparation for the test of the waste heat recovery system
- 6 Test content
- 7 Calculation of energy saving in waste heat recovery
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.
1 Scope
This document specifies the overall requirements, preliminary preparations, test content and results of the energy saving test and test of the waste heat recovery system of thermal power plants Calculation.
This document is applicable to the exhaust steam waste heat recovery system of steam turbines in thermal power plants, the flue gas waste heat recovery system after the boiler air preheater, and boilers Energy-saving detection test of air preheater flue gas bypass heat cascade utilization system, etc.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 2624 uses a differential pressure device installed in a circular cross-section pipe to measure the flow of fluid in a full pipe
GB/T 8117.4 Steam Turbine Thermal Performance Acceptance Test Procedure Part 4: Method D Steam Turbine and Its Thermal Cycle Simplified Performance test
GB/T 10184 Specification for performance test of power station boilers
DL/T 904 Calculation method of technical and economic indicators for thermal power plants
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Steam turbine exhaust steam waste heat recovery
The heat of exhaust steam from the steam turbine is recovered for heating, usually using heat pump, steam ejector and high back pressure heating technology.
3.2 Steam ejector
Extract high-parameter steam from the thermal system to inject part of the steam turbine exhaust, and output the medium-parameter steam to be connected to the heating network heater to heat the heating network Backwater equipment.
3.3 High back pressure heating
The steam turbine runs with increased back pressure, and the exhaust steam directly heats the return water of the heating network.
3.4 Flue gas waste heat recovery
Adopt low-temperature economizer, water heat medium air preheater and heat pump technology to recover the heat of the flue gas after the boiler air preheater.
3.5 Water heat medium air preheater
A device that uses water as an intermediate heat transfer medium to recover the heat of the flue gas to heat the air.
......
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
- GB/T 8117.4Rules for steam turbine thermal acceptance test—Part 4: Method D—Simplified performance test rules for steam turbine and its thermal cycle
- GB/T 10184Performance test code for utility boilers
- DL/T 904Calculating method of economical and technical index for thermal power plant
GB/T 2624
Similar standards
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Related Standards
DL/T 904-2015 — Calculating method of economical and technical index for thermal power plant
GB/T 10184-2025 — Performance test code for utility boilers
GB/T 2624.1-2006 — Full differential pressure device installed in a pipe of circular cross-section measuring fluid flow -- Part 1: General principles and requirements
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