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GB/T 45785-2025: Evaluation of energy performance for compressed air stations
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Evaluation of energy performance for compressed air stations
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GB/T 45785-2025
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Basic data | Standard ID | GB/T 45785-2025 (GB/T45785-2025) | | Description (Translated English) | Evaluation of energy performance for compressed air stations | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J72 | | Classification of International Standard | 23.140 | | Word Count Estimation | 14,197 | | Date of Issue | 2025-05-30 | | Date of Implementation | 2025-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 45785-2025: Evaluation of energy performance for compressed air stations---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.
ICS 23.140
CCSJ72
National Standard of the People's Republic of China
Energy performance evaluation of compressed air stations
Released on 2025-05-30
2025-09-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Evaluation objects and boundaries 2
5 General Requirements 3
6 Evaluation index system and value selection rules 3
7 Evaluation Methods 3
8 Evaluation Process 4
9 Evaluation results formation rules 5
Appendix A (Normative) Calculation of Energy Efficiency Factor of Compressed Air Station 6
Appendix B (Normative) Calculation of power transmission efficiency and comprehensive power transmission efficiency of compressed air station 8
Figure 1 Schematic diagram of compressed air station system boundary 2
Figure 2 Compressed air station energy performance evaluation flow chart 5
Table 1 Evaluation indicators and value selection rules 3
Table 2 Compressed air station energy efficiency level 3
Table A.1 Compressed air quality influence coefficient (c) 6
Table B.1 Compressed air humidity and liquid water level conversion coefficient table 9
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 for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Compressor Standardization (SAC/TC145).
This document was drafted by. Hefei General Machinery Research Institute Co., Ltd., Hefei General Mechanical and Electrical Products Testing Institute Co., Ltd., Atlas
S. Copco (Shanghai) Trading Co., Ltd., Zhejiang Kaishan Compressor Co., Ltd., Fusheng Industrial (Shanghai) Co., Ltd., Ningbo Baosi Energy
Equipment Co., Ltd., Shanghai Unetics Compressor Co., Ltd., Aijing Intelligent Equipment (Wuxi) Co., Ltd., Hangzhou Zheda Technology Co., Ltd.
Co., Ltd., Xiamen East Asia Machinery Industry Co., Ltd., Suzhou Qiangshi Compressor Co., Ltd., Guangdong Baode Technology Co., Ltd., Ingersoll
Lan Technology Research and Development (Shanghai) Co., Ltd., Fengdian Technology Group Co., Ltd., Guangdong Mushroom Internet of Things Technology Co., Ltd., Caos Energy Technology
Technology Co., Ltd., Shanghai Skoro Compressor Co., Ltd., Hangzhou Risheng Purification Equipment Co., Ltd., Sazhen Compressor (Shanghai) Co., Ltd.,
Kobelco Compressor Manufacturing (Shanghai) Co., Ltd., Wuxi Xiya Compressor Co., Ltd., Denair Energy Equipment Co., Ltd., Fusheng Yilida
(Shanghai) Compressor Co., Ltd., Ma'anshan Sai Li Wen Machinery Co., Ltd., Shenzhen Qi Lao Ban Energy Saving Technology Co., Ltd., Shandong Haomai Machinery Manufacturing Co., Ltd.
Ningbo Deman Compressor Co., Ltd., China General Machinery Industry Association, Ningbo Energy Conservation Association, State Grid Zhejiang Integrated Energy Service Co., Ltd.
Services Co., Ltd., Hefei Comage Intelligent Sensing Technology Co., Ltd., Zhongkong Technology Co., Ltd., Fujian Ips Industrial Co., Ltd.,
Guangdong Lingyu Energy Equipment Co., Ltd., Shanghai Hanzhong Precision Machinery Co., Ltd., Shanghai Shenxingjian Compressor Co., Ltd., Anhui Kaihong Intelligent
Manufacturing Co., Ltd.
The main drafters of this document are. Bao Yangyang, Sun Xiaoming, Li Jinrong, Tian Xudong, Jie Zhengyi, Yu Yue, Zhang Jiongyan, Lu Zhaoling, Xie Risheng,
Ma Jianfeng, Han Wenhao, Xu Jun, Ye Cailiang, Lin Lihua, Bai Jungang, Xue Ming, Shen Guohui, Chai Jiqiang, Gao Baohua, Li Jinlu, Zhang Tao, Cheng Hongxing,
Wu Zhenguang, Wu Xiajun, Zhao Yingpu, Chu Yi, Hu Qingyu, Wang Lishui, Cao Yupei, Cen Huanjun, Sui Bin, Hu Changxing, Zhang Xu, Gu Yu, He Weiting,
Lin Peifeng, Yan Wenxue, Zhang Qihua, Sun Shenkai, Hong Quan, Chen Ming, Luo Jia, Wang Xinyong, Xu Ning, Wang Quanchao, Pan Demao, Lin Siqiao, Yang Chao, Luo Zhendong,
Li Mingwen, Shao Kai, Ma Haijing, Zheng Shenjie, Chen Xiaolin, Ma Ning, Zhu Wang, Zhao Lei, Wang Qichang, Zhang Renhe, Jin Guofeng, Guo Huaqiao, Ren Fang, Gao Biao,
Ye Hansheng, Wang Yajun, Zhou Kun, Jin Wei, Wang Guirong, Xia Qing, Shen Tianyu, Gao Jian.
Introduction
Compressed air station (air compressor system) is the infrastructure of modern factories, including air compressor units, compressed air purification equipment, control
The compressed air produced by the system is one of the main driving forces of modern industry and is widely used in various fields of the national economy.
At present, the overall operating efficiency of compressed air stations in my country is low, and there is a lack of indicators and methods for quantitative evaluation of system energy efficiency.
Implement policy requirements, promote compressors, a key energy-consuming equipment, from single energy saving to full process and system energy saving, guide industry equipment update,
This document is specially formulated to improve system energy efficiency.
This document specifies the energy performance evaluation of compressed air stations in service, newly built/renovated, including energy efficiency level, energy efficiency,
The evaluation of energy efficiency and energy benefits provides evaluation indicators and value rules based on measuring energy conversion efficiency, as well as energy efficiency grades.
Performance truly reflects the actual operating level of the compressed air station, which is helpful for compressed air station manufacturers, design units, energy users and energy-saving service providers.
Service providers set energy-saving targets, guide the energy efficiency benchmarking management of compressed air station operations, determine energy efficiency levels, discover energy-saving space, and calculate energy-saving effects.
We will carry out energy conservation monitoring, energy assessment, green manufacturing evaluation, energy conservation management and other activities to promote the continuous optimization and energy efficiency of compressed air stations.
promote.
Energy performance evaluation of compressed air stations
1 Scope
This document specifies the evaluation object and boundaries, overall requirements, evaluation index system and value selection rules for compressed air station energy performance evaluation.
Then, the corresponding evaluation method is described, and the evaluation process and the rules for forming the evaluation results are stipulated.
This document is applicable to air compressors driven by electric motors with exhaust pressures of 0.25MPa~1.6MPa and with a large air supply flow rate.
Energy performance evaluation activities for compressed air stations with a capacity of more than 4m3/min and a total operating power of not less than 37kW.
2 Normative references
The contents of the following documents constitute 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.
GB/T 3853 Acceptance test for positive displacement compressors
GB/T 4975 General terms for positive displacement compressors
GB/T 5226.1 Electrical safety of machinery Electrical equipment of machinery Part 1.General technical requirements
GB/T 13277.1 Compressed air Part 1.Pollutant purification levels
GB/T 16665 Energy-saving monitoring of air compressor units and air supply systems
GB 17167 General rules for the allocation and management of energy metering instruments in energy-consuming units
GB 18613 Energy efficiency limit values and energy efficiency grades for electric motors
GB 19153 Energy efficiency limits and energy efficiency grades for positive displacement air compressors
GB 22207 Safety requirements for positive displacement air compressors
GB 30253 Energy efficiency limit values and energy efficiency grades for permanent magnet synchronous motors
GB 30254 Energy efficiency limit values and energy efficiency grades for high-voltage three-phase cage-type asynchronous motors
GB 50029 Design specification for compressed air stations
JB/T 7664 Compressed air purification terminology
3 Terms and definitions
GB/T 3853, GB/T 4975, GB/T 13277.1, GB/T 16665, GB 19153, GB 50029 and JB/T 7664
The following terms and definitions apply to this document.
3.1
Compressed air station compressedairstation
air compressor system aircompressorsystem
All air compressor units, compressed air purification equipment, power supply and distribution systems, cooling systems, monitoring systems, ventilation systems, heat recovery systems and
The whole composed of pipelines, air storage tanks, valves, instruments and other necessary auxiliary equipment for transporting compressed air before the compressed air supply main.
3.2
Factor characterizing the energy efficiency class of a compressed air station (3.1).
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