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GB/T 45477-2025: Oil free centrifugal water chilling(heat pump) packages
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| GB/T 45477-2025 | English | 599 |
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Oil free centrifugal water chilling(heat pump) packages
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GB/T 45477-2025
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Basic data | Standard ID | GB/T 45477-2025 (GB/T45477-2025) | | Description (Translated English) | Oil free centrifugal water chilling(heat pump) packages | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J73 | | Classification of International Standard | 27.200 | | Word Count Estimation | 30,333 | | Date of Issue | 2025-03-28 | | Date of Implementation | 2025-10-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 45477-2025: Oil free centrifugal water chilling(heat pump) packages---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.
GB/T 45477-2025 English version. Oil free centrifugal water chilling(heat pump) packages
ICS 27.200
CCSJ73
National Standard of the People's Republic of China
Oil-free suspended centrifugal chiller (heat pump) unit
Released on 2025-03-28
2025-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Type and basic parameters 2
4.1 Type 2
4.2 Model 2
4.3 Basic parameters 2
5 Technical Requirements 7
5.1 General requirements 7
5.2 Leakage and pressure test 7
5.3 Trial operation 8
5.4 Nominal operating performance 8
5.5 Part load performance 9
5.6 Seasonal performance 10
5.7 Overall performance throughout the year 10
5.8 Water side pressure loss 10
5.9 Maximum cooling load 10
5.10 Minimum cooling load 10
5.11 Minimum pressure ratio operation 10
5.12 Maximum pressure ratio operation 10
5.13 Anti-surge operation 10
5.14 Reverse temperature difference operation 10
5.15 Low pressure ratio performance 11
5.16 Starting current 11
5.17 Quick Start 11
5.18 Performance under operating conditions 11
5.19 Noise 12
5.20 Vibration 13
5.21 Safety requirements 13
5.22 Special requirements for units with heat recovery function 13
5.23 Special requirements for units with cold storage function 13
6 Test methods 14
6.1 Test conditions 14
6.2 Installation 14
6.3 Data Processing 14
6.4 Test steps 15
7 Inspection Rules 19
8 Marking, packaging, transportation and storage 21
8.1 Sign 21
8.2 Packaging 23
8.3 Transportation and storage 23
Table 1 Standard operating conditions for general performance tests of water-cooled comfort units 3
Table 2 Standard operating conditions for general performance test of air-cooled comfort units 3
Table 3 Standard operating conditions for general performance test of evaporative cooling comfort units
Table 4 Standard operating conditions for general performance test of water (ground) source comfort type units 4
Table 5 Standard operating conditions for general performance tests of process units 4
Table 6 Standard operating conditions for general performance tests of data center dedicated units 5
Table 7 Partial load performance test conditions 5
Table 8 Standard operating conditions for refrigeration season performance test 6
Table 9 Standard operating conditions for the annual comprehensive refrigeration performance test 7
Table 10 Standard working conditions for the annual comprehensive performance test 7
Table 11 Energy efficiency parameter limits for comfort units (water-cooled) 8
Table 12 Energy efficiency parameter limits for comfort units (air-cooled) 8
Table 13 Energy efficiency parameter limits for comfort units (evaporative cooling) 8
Table 14 Energy efficiency parameter limits for comfort units [water (ground) source] 9
Table 15 Energy efficiency parameter limits for dedicated units in data centers 9
Table 16 Air-cooled and evaporative cooling operating conditions 11
Table 17 Water-cooled operating conditions 12
Table 18 Water (ground) source use conditions 12
Table 19 Noise limits (sound pressure level) for water-cooled units 12
Table 20 Noise Limits (Sound Pressure Level) for Air-Cooled Units 13
Table 21 Noise limits (sound pressure level) for evaporative cooling units 13
Table 22 Reading tolerance of test conditions (average variation range) 14
Table 23 Reading tolerance of test conditions (maximum variation) 15
Table 24 Inspection Items 19
Table 25 Nameplate content 21
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 for Standardization of Refrigeration and Air-conditioning Equipment (SAC/TC238).
This document was drafted by. Qingdao Haier Air Conditioning Electronics Co., Ltd., Hefei General Mechanical and Electrical Products Testing Institute Co., Ltd., Chongqing Midea General
Refrigeration Equipment Co., Ltd., Qingdao Hisense Hitachi Air Conditioning System Co., Ltd., Johnson Controls Hitachi Wanbao Air Conditioning (Guangzhou) Co., Ltd., Ice Ring
Environmental Technology Co., Ltd., Xinlei Compressor Co., Ltd., Kunlin Refrigeration Machinery (Shanghai) Co., Ltd., Guangdong Haiwu Technology Co., Ltd.
Zhejiang Qingfeng Environmental Protection Co., Ltd., Virbac (Tianjin) Co., Ltd., Guangzhou Simote Refrigeration Equipment Manufacturing Co., Ltd., China Telecom
Co., Ltd. Procurement Supply Chain Management Center, Shandong Zhongkeneng Artificial Environment Co., Ltd., Shuangliang Energy Saving System Co., Ltd., Shijiatou
Bojie Power Rugao Co., Ltd., LEITS Intelligent Equipment (Guangdong) Co., Ltd., Tsinghua University, Yantai Vocational College, SINOMACH General Machinery Technology
Co., Ltd. and Hefei General Machinery Research Institute Co., Ltd.
The main drafters of this document are. Fu Songhui, Guo Defang, Ma Jinping, Li Zhenshan, Zhang Wenqiang, Zhang Zhenjun, Xu Shuwu, Yang Zhihua, Yuan Ming,
Lü Dongjian, Jin Xiansong, Yin Bing, Wang Yinyan, Wang Yaonan, Zhang Caixia, Hu Yimu, Wang Haijun, Wu Yanguang, Shi Wenxing, Li Aiyan, Zhang Xiuping, Zhou Kun,
Li Yayun, Xia Linfeng, Qian Xuefeng, and Peng Fei.
Oil-free suspended centrifugal chiller (heat pump) unit
1 Scope
This document specifies the types and basic parameters, technical requirements, test
Inspection methods, inspection rules, as well as marking, packaging, transportation and storage.
This document applies to centrifugal vapor compression circulating chillers (heat pumps) using magnetic bearings, gas bearings and refrigerant lubricated bearings
unit.
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 2894-2008 Safety signs and their use guidelines
GB/T 4706.32-2024 Safety of household and similar electrical appliances Part 32.Special requirements for heat pumps, air conditioners and dehumidifiers
Require
GB/T 9237 Safety and environmental requirements for refrigeration systems and heat pumps
GB/T 10870-2014 Performance test method for vapor compression cycle chillers (heat pumps)
GB/T 13306 Labels
GB/T 13384 General technical requirements for packaging of electromechanical products
GB/T 18430.1-2024 Vapor compression cycle chillers (heat pumps) Part 1.Chillers for industrial or commercial and similar purposes
Water (heat pump) unit
GB/T 19409 Water (ground) source heat pump unit
JB/T 7249 Terminology of Refrigeration and Air-conditioning Equipment
NB/T 47012-2020 Pressure vessels for refrigeration equipment
3 Terms and definitions
The terms and definitions defined in JB/T 7249, GB/T 18430.1-2024 and GB/T 19409 and the following apply to this document.
3.1
Oil-free centrifugal water chilling (heat pump) packages
A centrifugal vapor compression cycle chiller (heat pump) unit using magnetic bearings, gas bearings or refrigerant lubricated bearings.
Note 1.Magnetic bearings are bearings that use the attractive or repulsive force of a magnetic field to suspend and dynamically stabilize the rotor.
Note 2.Aerostatic bearings are sliding bearings that use air and refrigerant vapor (or other gases) as lubricants.
There are two types. static pressure air suspension bearings and dynamic pressure air suspension bearings.
Note 3.Refrigerant lubricated bearings are rolling bearings or sliding bearings that use refrigerant liquid as lubricant.
3.2
Pressure ratiopressureratio
The ratio of the absolute pressure at the compressor discharge port to the absolute pressure at the compressor suction port.
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