Minimum allowable of energy efficiency and energy efficiency grades for cold store (box) and refrigerant compressor condensing unit
1 Scope
This document specifies the energy efficiency grades, technical requirements, test methods and standard implementation for cold store (box) (collectively referred to as "cold store") and refrigerant compressor condensing unit.
This document is applicable to assembly cold store, civil cold store and positive displacement refrigerant compressor condensing unit driven by motor.
This document is not applicable to the following products or cooling systems:
a) refrigerating systems not driven by motor and compressor;
b) refrigerated containers, refrigerating containers and refrigerated and freezing boxes for transportation with or without refrigerating systems;
c) site assembly refrigerant compressor condensing units;
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 18517 Terminology of refrigeration
GB/T 21363 Positive displacement refrigerant compressor condensing unit
GB/T 30103.1-2013 Methods of testing for thermal performance on cold store - Part 1: Temperature and humidity testing
GB 50072 Code for design of cold store
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 18517, GB/T 21363, GB 50072 and the following apply.
3.1
minimum allowable values of energy efficiency for positive displacement refrigerant compressor condensing unit
minimum allowable values of performance coefficient for positive displacement refrigerant compressor condensing unit during cooling operation under rated conditions
3.2
maximum allowable values of energy efficiency for cold store
maximum allowable values of actual energy efficiency index for cold store under rated conditions
3.3
actual energy efficiency index for cold store
η
ratio of power consumption of the cold store for 24h (TEC25) to the reference power consumption (TECmax), at an ambient temperature of 25°C, or under rated conditions which may be converted to an ambient temperature of 25°C
3.4
unit input power
sum of the compressor power of refrigerant compressor condensing unit and all the input powers of other auxiliary equipment in the unit (such as fans and motors) under nominal conditions
3.5
state of stable operation
state in which there is no continuous decrease or increase in the average temperature in the cold store; and state, in which, the refrigerant compressor can automatically start and stop during operation, and in the case of cyclic variation of temperature in the cold store, the unidirectional fluctuation difference of the average temperature of the corresponding temperature points in the cold store at the corresponding time points of several whole cycles of automatic start and stop with an interval of more than 6h shall not be greater than 0.5°C; where the refrigerant compressor operates continuously, the unidirectional fluctuation difference of the average temperature of the corresponding temperature points in the cold store at the whole cycle time points of more than 6h is not more than 0.5°C
Note: The time points where temperature fluctuations are caused by defrosting are excluded.
4 Energy efficiency grades
4.1 Energy efficiency grades for cold store
The energy efficiency for cold store is divided into three grades by its energy efficiency index: Grades 1, 2, and 3. Grade 1 indicates the highest energy efficiency. The actual energy efficiency index of each energy efficiency grade shall not be larger than those given in Table 1.
Table 1 Indexes of energy efficiency grades for cold store
Energy efficiency grade Actual energy efficiency index for cold store
Grade 1 30%
Grade 2 45%
Grade 3 100%
4.2 Energy efficiency grades for positive displacement refrigerant compressor condensing unit
The energy efficiency for positive displacement refrigerant compressor condensing unit is divided into three grades by the performance coefficient which is the basis of the energy efficiency grade: Grades 1, 2, and 3. Grade 1 indicates the highest energy efficiency. The actual performance coefficient of each energy efficiency grade shall not be less than those given in Table 2.
Table 2 Indexes of energy efficiency grades for positive displacement refrigerant compressor condensing unit
Unit input power (CC/kW) Energy efficiency grade
Grade 1 Grade 2 Grade 3
Coefficient of performance for cooling COPc/(W/W) Coefficient of performance for cooling COPc/(W/W) Coefficient of performance for cooling COPc/(W/W)
Air-cooled type High temperature type ≤12 3.36 3.08 2.80
>12~32 3.48 3.19 2.90
>32 3.60 3.30 3.00
Medium temperature type ≤3 2.40 2.20 1.80
>3~12 2.64 2.42 2.20
>12~32 2.64 2.42 2.20
>32 2.64 2.42 2.20
Low temperature type ≤5 1.60 1.40 1.30
>5~12 1.70 1.50 1.40
>12~32 1.80 1.65 1.50
>32 1.92 1.76 1.60
Water-cooled type High temperature type ≤12 5.04 4.62 4.20
>12~32 5.28 4.84 4.40
>32 5.52 5.06 4.60
Medium temperature type ≤3 — — —
>3~12 3.36 3.08 2.80
>12~32 3.48 3.19 2.90
>32 3.60 3.30 3.00
Low temperature type ≤12 2.04 1.87 1.70
>12~32 2.16 1.98 1.80
>32 2.28 2.09 1.90
Note 1: See GB/T 21363 for the unit classification in this table.
Note 2: "—" in this table means “not required”.
5 Technical requirements
5.1 Maximum allowable values of energy efficiency for cold store
The maximum allowable values of energy efficiency for cold store are the energy efficiency index value of Grade 3 in Table 1.
5.2 Minimum allowable values of energy efficiency for positive displacement refrigerant compressor condensing unit
The minimum allowable values of energy efficiency for positive displacement refrigerant compressor condensing unit are the energy efficiency index value of Grade 3 in Table 2.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Energy efficiency grades 5 Technical requirements 6 Test methods 7 Standard implementation Annex A (Normative) Calculation of cooling equipment load Bibliography
ICS 27.010 CCS F 01 GB 中华人民共和国国家标准 GB 44015-2024 冷库(箱)和压缩冷凝机组能效限定值及能效等级 Minimum allowable of energy efficiency and energy efficiency grades for cold store ( box) and refrigerant compressor condensing unit 2024-04-29发布 2025-02-01实施 国家市场监督管理总局 发布 国家标准化管理委员会
3.1 容积式压缩冷凝机组能效限定值minimum allowable values of energy efficiency for positive displacement refrigerant compressor condensing unit 在额定工况条件下制冷运行时，容积式制冷压缩冷凝机组性能系数的最小允许值。
3.2 冷库(箱)能效限定值maximum allowable values of energy efficiency for cold store 在额定工况条件下，冷库(箱)的能效指数最大允许值。
3.3 冷库(箱)能效指数actual energy efficiency index for cold store η 环境温度为25℃时,或折算到环境温度为25℃时的额定工况条件下,冷库(箱)24h的耗电量(TEC25)与基准耗电量(TECmax)之比。
3.4 压缩冷凝机组输入功率unit input power 在名义工况下，压缩冷凝机组的压缩机输人功率与机组中其他辅助设备(如风机.电动机等)所有输入功率之和。
3.5 稳定运行状态state of stable operation 冷库内温度平均值无持续下降或持续上升的状态。在运行中制冷压缩机有自动开、停机，冷 库内温度呈周期性变化时，相隔6h以上的若干自动开、停机整周期对应时间点上的冷库内对应温度点的平均温度的单向波动差值不大于0.5℃；当制冷压缩机持续开机运行时,若干6h以上的整周期时间点上的冷库内对应温度点的平均温度的单向波动差值不大于0.5℃时的状态。 注：因除霜引起温度波动的时间点除外。
