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GB/T 14909-2021 English PDF

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GB/T 14909-2021: Technical guidelines for exergy analysis in energy systems
Status: Valid

GB/T 14909: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 14909-2021English629 Add to Cart 6 days [Need to translate] Technical guidelines for exergy analysis in energy systems Valid GB/T 14909-2021
GB/T 14909-2005EnglishRFQ ASK 5 days [Need to translate] Technical guides for exergy analysis in energy system Obsolete GB/T 14909-2005
GB/T 14909-1994English879 Add to Cart 6 days [Need to translate] Technical guides for exergy analysis Obsolete GB/T 14909-1994

PDF similar to GB/T 14909-2021


Standard similar to GB/T 14909-2021

GB/T 13469   GB 16780   GB/T 15911   GB 19762   GB 17167   

Basic data

Standard ID GB/T 14909-2021 (GB/T14909-2021)
Description (Translated English) Technical guidelines for exergy analysis in energy systems
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard F01
Word Count Estimation 34,313
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 14909-2021: Technical guidelines for exergy analysis in energy systems

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical guidelines for exergy analysis in energy systems ICS 27.010 CCSF01 National Standards of People's Republic of China Replace GB/T 14909-2005 Technical Guidelines for Energy System Analysis Released on 2021-04-30 2021-11-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 calculation 2 5 Accounting (balance) 3 6 Analysis of evaluation indicators 4 7 Steps of analysis 6 Appendix A (Normative) Value and enthalpy value, balance and loss calculation method 8 Appendix B (informative) Energy system analysis example 19

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. This document replaces GB/T 14909-2005 "Energy System Analysis Technical Guidelines", compared with GB/T 14909-2005, except for editing In addition to the sexual changes, the main technical changes are as follows. ---Modified the scope of application of the standard (see Chapter 1, Chapter 1 of the.2005 edition). --- Added "Normative Reference Documents" (see Chapter 2). ---Modified the definitions of "system", "environmental reference state", "loss" and "analysis" (see 3.1~3.5, 3.9, 2.1 in.2005 edition) ~2.5); The definitions of "standard and standard enthalpy", "energy grade" and "efficiency" have been added (see 3.6~3.8). ---Modified the atmospheric composition of the environmental reference state, and improved the elemental reference substance system (see 4.1, Table 1 and Table 2,.2005 edition Table 1 and Table 2). ---Modified and improved calculation method (see Chapter 4, Chapter 3 of the.2005 edition). In the evaluation indicators analyzed, added The new indicator "Energy Grade" (see 6.4). ---Modified and perfected the "Analytical Steps". Contents such as "energy balance calculation" and "energy grade calculation" have been added, and the "evaluation and analysis" have been refined. "Analysis" (see Chapter 7, Chapter 6 of the.2005 edition). ---Revised the calculation of Appendix A (normative) value and enthalpy value, balance and loss. Added "substance value and enthalpy value" Calculation method, and calculation method of "value and enthalpy value under pressure lower than 100kPa"; supplemented the "basic process Balance, loss, efficiency and process quality" (see Appendix A, Appendix A of the.2005 edition). ---Revised Appendix B (informative) energy system analysis examples. Replaced with "Analysis of Four Building Heating Modes and Grade Analysis" "Boiler analysis" replaced "Analysis of the process of benzene hydrogenation to cyclohexane" with "Methanol synthesis and separation process analysis" (See Appendix B, Appendix B of the.2005 edition). Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed and managed by the National Standardization Technical Committee on Energy Foundation and Management (SAC/TC20). Drafting organizations of this document. Tsinghua University, Institute of Engineering Thermophysics, Chinese Academy of Sciences, North China Electric Power University, China National Institute of Standardization, North China Beijing University of Chemical Technology, China Petroleum and Chemical Industry Federation, China Electricity Council, China Urban Heating Association, Huadian Electric Power Research Institute Institute Co., Ltd., Beijing Thermal Group Co., Ltd., Tongfang Artificial Environment Co., Ltd., Tianjin Cement Industry Design and Research Institute Co., Ltd. Division, China Petroleum Planning Institute, Sinopec Engineering Construction Co., Ltd., Beijing Shougang International Engineering Technology Co., Ltd. The main drafters of this document. Zheng Danxing, Shi Lin, Zhang Na, Duan Liqiang, Liu Meng, Chen Xiaohui, Huang Weijia, Dai Xiaoye, Feng Lejun, Jiang Xizhuo, Zhou Junhua, Chang Yunling, Niu Xiaohua, Ruan Jiongming, Han Jingxiao, Gao Peifeng, Di Dongren, Wang Guanghe, Jian Jianghai, Wang Daijun. This document was first published in.1994, revised for the first time in.2005, and this is the second revision. Technical Guidelines for Energy System Analysis

1 Scope

This document specifies the evaluation indicators for calculation, accountancy (balance) and analysis in energy system analysis, as well as the analysis step. This document applies to the analysis of unit equipment, processes, technological processes or systems that involve energy utilization or energy conversion; it also applies to comprehensive Energy system analysis that considers economic performance or ecological environmental impact, as well as energy supply plan planning, energy auditing and other energy management tasks.

2 Normative references

The content of the following documents constitutes an indispensable clause 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 2587 General rules for energy balance of energy-consuming equipment GB/T 3102.4 Thermal quantity and unit GB/T 3484 General Principles of Enterprise Energy Balance GB/T 17781 Basic Concepts of Technical Energy System GB/T 35071 Energy System Optimization Guide

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 System An analysis object with a clear boundary determined according to the purpose of the research. Note. In theoretical analysis, it is also called system, which can be divided into multiple subsystems according to certain research purposes and boundary division principles. 3.2 Environmental reference state An idealized outside world with limited conditions, which is selected from the categories of the earth, such as the atmosphere, the surface, and the ocean, in a state of complete equilibrium. It is composed of a fixed reference material system (see 4.1), and has an environmental reference temperature of 298.15K (25°C) and an environmental reference of 100kPa State pressure (see 7.2) is the numerical benchmark for analysis and calculation. 3.3 exergy The system is reversible from any state (with a certain temperature, pressure and chemical composition) to a state of equilibrium with the reference state of the environment The work done to the outside world in the process. 3.4 Internalexergyloss Due to the irreversibility of the internal process of the system, the system's functional capacity is reduced.

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