GB/T 16665-2025 Monitoring and testing for energy saving of air compressor unit and air distribution system English, Anglais, Englisch, Inglés, えいご
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ICS 13.220
CCS H 57
National Standard of the People's Republic of China
GB/T 16665-2025
Replaces GB/T 16665-2017
Monitoring and testing for energy saving of air compressor unit and air distribution system
空气压缩机组及供气系统节能监测
Issue date: 2025-10-31 Implementation date: 2026-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Monitoring Requirements
5 Monitoring Methods
6 Calculation Methods
7 Energy-saving Monitoring Evaluation
Appendix A (Normative) Energy-saving Monitoring Report for Air Compressor Units and Air Supply Systems
References
1 Scope
This document specifies the energy-saving monitoring items, monitoring requirements, monitoring methods, test items, calculation methods, and energy-saving monitoring evaluation for air compressor units and air supply systems.
This document is applicable to the energy-saving monitoring of motor-driven air compressor units, air supply systems with a supply pressure of 0.2 MPa to 1.6 MPa, and compressed air stations in operation, as well as for acceptance monitoring of newly built, renovated, or reconstructed compressed air stations.
This document does not apply to compressed air stations located in special places such as underground, culverts, and ships.
2 Normative References
The contents of the following documents, through normative citations in this document, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 3853 Reciprocating compressors - Acceptance tests
GB/T 4975 Reciprocating compressors - Terminology - General
GB/T 10893.1 Compressed air dryers - Part 1: Specification and testing
GB/T 13277.1 Compressed air - Part 1: Contaminants and purity classes
GB/T 13277.2 Compressed air - Part 2: Methods for the measurement of oil aerosol content
GB/T 13277.3 Compressed air - Part 3: Methods for the measurement of humidity
GB/T 13277.5 Compressed air - Part 5: Methods for the measurement of oil vapor and organic solvent content
GB/T 15487 Positive displacement compressors - Methods for measuring the capacity
GB 17167 General rules for the equipping and management of energy measuring instruments in energy-consuming organizations
GB 19153 Minimum allowable values of the energy efficiency and energy efficiency grades for positive displacement air compressors
GB/T 25630 Performance test code for centrifugal compressors
GB 50029 Code for design of compressed air station
GB/T 45785 Energy performance assessment of compressed air station
JB/T 7662 Positive displacement compressors - Terminology - Rotary compressors
JB/T 7664 Compressed air purification - Terminology
JB/T 9107 Reciprocating compressors - Terminology
3 Terms and Definitions
The terms and definitions defined in GB/T 3853, GB/T 4975, GB/T 13277.1, GB/T 15487, GB 19153, GB/T 25630, JB/T 7662, JB/T 7664, and JB/T 9107, as well as the following, apply to this document.
3.1 Air Compressor Unit
3.2 Air Distribution System
The overall system consisting of pipelines, air receivers, pipe fittings, and necessary auxiliary equipment for transporting compressed air within a compressed air station.
3.3 Compressed Air Station
The overall system consisting of all air compressor units, compressed air purification and drying equipment, power supply and distribution systems, cooling systems, monitoring systems, ventilation systems, heat recovery systems, and the pipelines, air receivers, valves, instruments, and necessary auxiliary equipment for transporting compressed air before the main supply header.
3.4 Standard Inlet Point of a Compressed Air Station
The representative air intake location within a compressed air station.
Note 1: For a compressed air station in a closed room, the standard inlet point is at the location where ambient air enters the station room, such as openings in exterior walls.
Note 2: For an open station room or when the air filter is located outside the station room, it is the spatial location where air first enters the air filter or similar attachments.
3.5 Inlet Temperature of a Compressed Air Station
The total gas temperature at the standard inlet point of a compressed air station.
3.6 Inlet Pressure of a Compressed Air Station
The total gas pressure at the standard inlet point of a compressed air station.
3.7 Specific Electrical Energy Consumption of a Compressed Air Station
The electrical energy consumed per unit volume of compressed air (at standard inlet conditions) output by a compressed air station.
3.8 Heat Recovery Rate
The ratio of the recovered heat to the electrical energy consumed by a compressed air station.
Note: The recovered heat does not include the heat utilized within the compressed air station system.
3.9 Rated Load Flow Rate of a Compressed Air Station
The maximum design demand air supply flow rate proposed by the user to the compressed air station.
3.10 Output Work Efficiency of a Compressed Air Station
The ratio of the effective energy in the output compressed air to the electrical energy consumed in producing the compressed air.
Note: The effective energy of compressed air is its capacity to perform work, relative to the actual ambient atmospheric state, including both its kinetic and potential energy.
3.11 Overall Work Efficiency of a Compressed Air Station
The output work efficiency of a compressed air station, adjusted for factors such as heat recovery utilization and supply air parameters (total oil content and humidity in compressed air).
4 Monitoring Requirements
4.1 Energy-Saving Monitoring Inspection Items
4.1.1 The air compressor unit and air supply system shall operate normally with a reasonably configured system. The inspection shall include the following:
a) Check whether the system and equipment configuration are reasonable, whether the operation is normal, and whether the usage is appropriate;
b) Check whether the air compressor unit, dryer, filters, water separators, and air supply system are properly installed and whether they are products that have been officially phased out by the state;
c) The air compressor unit and compressed air station shall have complete equipment records, operation logs, maintenance records, and renovation records, which shall be retained for no less than five years. After major overhauls, the air compressor unit shall be tested in accordance with GB/T 3853 and GB/T 25630, and the compressed air dryer shall be tested in accordance with GB/T 10893.1.
4.1.2 The compressed air station room shall be well ventilated, and the compressor air intake shall be installed in a location that is shaded and free from heat sources. The air supply system shall not have any significant damage or leaks.
4.1.3 The compressed air distribution network shall determine the pipe material and pipe dimensions based on production process requirements, be reasonably laid out, and minimize pressure loss during transportation.
4.2 Energy-Saving Monitoring Test Items
This translation maintains the technical accuracy and formal tone of the original document while ensuring clarity and readability in English.
