GB 12021.2-2025 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 12021.2-2025 | English | 320 |
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Maximum allowable values of energy consumption and energy efficiency grade for household refrigerating appliance
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| GB 12021.2-2015 | English | 1999 |
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The maximum allowable values of the energy consumption and energy efficiency grade for household refrigerators
| Valid |
| GB 12021.2-2008 | English | 319 |
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The maximum allowable values of the energy consumption and energy efficiency grade for household refrigerators
| Obsolete |
| GB 12021.2-2003 | English | 319 |
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The maximum allowable values of the energy consumption and energy efficiency grade for household refrigerators
| Obsolete |
| GB 12021.2-1999 | English | 239 |
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The maximum allowable value of the energy consumption and evaluating values of energy conservation for household refrigerators
| Obsolete |
| GB 12021.2-1989 | English | RFQ |
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The limited value and testing method of the energy consumption for household refrigerators
| Obsolete |
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GB 12021.2-2025: Maximum allowable values of energy consumption and energy efficiency grade for household refrigerating appliance
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB12021.2-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.010
CCS F 01
Replacing GB 12021.2-2015
Maximum Allowable Values of Energy Consumption and
Energy Efficiency Grade for Household Refrigerating
Appliance
Issued on: MAY 30, 2025
Implemented on: JUNE 1, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 5
4 Classification of Refrigerating Appliances... 9
5 Maximum Allowable Value of Energy Consumption... 12
6 Energy Efficiency Grade Determination Method... 16
7 Test Methods... 18
8 Implementation of This Document... 26
Appendix A (normative) Test Method for Smart Grid Signal Response Function of
Refrigerating Appliances... 27
Maximum Allowable Values of Energy Consumption and
Energy Efficiency Grade for Household Refrigerating
Appliance
1 Scope
This document specifies the maximum allowable values of energy consumption, energy
efficiency grades and implementation requirements for household refrigerating appliances and
describes the corresponding test methods.
This document applies to motor-driven compression-type household refrigerating appliances,
and semiconductor refrigerating appliances with a volume less than or equal to 60 L (hereinafter
referred to as the “refrigerating appliances”).
This document does not apply to refrigerating appliances specially designed for commercial or
vehicle-mounted use.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 8059 Household and Similar Refrigerating Appliances
QB/T 5369 Semiconductor Refrigeration Appliance
IEC 62552-3.2020 Household Refrigerating Appliances - Characteristics and Test Methods -
Part 3.Energy Consumption and Volume
3 Terms and Definitions
The terms and definitions defined in GB/T 8059 and QB/T 5369, and the following are
applicable to this document.
3.1 built-in refrigerating appliance
A fixed refrigerating appliance intended for installation in a cabinet, niche reserved in the wall,
or similar location.
NOTE. fixed refers to an appliance that is fastened to a bracket or fixed in a specific location for
4 Classification of Refrigerating Appliances
4.1 By the refrigeration principle, the refrigerating appliances are classified into motor-driven
compression-type refrigerating appliances and semiconductor refrigerating appliances.
4.2 By their energy efficiency characteristics, the refrigerating appliances can be classified into
10 types, as shown in Table 1.
5 Maximum Allowable Value of Energy Consumption
5.1 Calculation of Adjusted Volume of Refrigerating Appliances
The adjusted volume of refrigerating appliances is calculated in accordance with Formula (1).
Where,
Vadj---the adjusted volume, expressed in (L);
n---the number of different types of compartments of a refrigerating appliance;
Vc---the measured volume of a specific type of compartment, rounded to one decimal place and
expressed in (L);
Fc---a constant. For frost-free refrigerating appliances, this constant is 1.5 for compartments
using forced convection and 1.0 for other types of compartments. For direct-cooling
refrigerating appliances with a volume 300 L and a direct-cooling refrigerator-freezer or
direct-cooling freezer (including types 5, 6, 8 and 9 specified in Table 1), this constant is 1.2;
for other types, this constant is 1.0;
NOTE. the frost-free refrigerating appliances refer to appliances in which all compartments are
equipped with automatic defrosting and automatic defrost water removal, and at least one
compartment is cooled using a frost-free system.
Wc---the weighting coefficient for each compartment type, see Table 2.The value for the ice-
making compartment can be determined based on the characteristic temperature indicated; the
value for the variable temperature compartment is determined based on the characteristic
temperature corresponding to the compartment type selected during the energy consumption
test;
CC---the climate type correction coefficient, which equals to 1 for SN or N climate type, 1.1
for ST climate type, and 1.2 for T climate type. For refrigerating appliances with multiple
climate types, the climate type with the highest climate type correction coefficient is used to
calculate the adjusted volume;
BI---1.2 for built-in refrigerating appliances and 1.0 for the others.
6 Energy Efficiency Grade Determination Method
6.1 Calculation of Standard Energy Efficiency Index
The standard energy efficiency index of the refrigerating appliances is calculated in accordance
with Formula (4).
Where,
s---the standard energy efficiency index;
Es---the standard energy consumption, expressed in (kW h/24 h);
Ebase---the baseline energy consumption, expressed in (kW h/24 h).
6.2 Calculation of Total Energy Efficiency Index
The total energy efficiency index of the refrigerating appliances is calculated in accordance
with Formula (5).
Where,
t---the total energy efficiency index;
Et---the total value of energy consumption, expressed in (kW h/24 h);
Ebase---the baseline energy consumption, expressed in (kW h/24 h).
6.3 Determination of Energy Efficiency Grade
The energy efficiency of refrigerating appliances is divided into five grades, with Grade 1
representing the highest energy efficiency.
In accordance with Table 5, determine the energy efficiency grade of the product. This energy
efficiency grade shall not be lower than the rated energy efficiency grade of the product.
7 Test Methods
7.1 Volume Test
With the exception of the following, the volume test shall be conducted in accordance with
Appendix H of IEC 62552-3.2020.
a) When a compartment contains a sub-compartment, if the sub-compartment is a solid
foam insulation structure, then, the sub-compartment is calculated based on the
volume within the solid insulation structure, and the volume of the compartment
within which it is located is calculated by subtracting the volume occupied by the
solid structure on the periphery the sub-compartment.
b) Any partitions with an average thickness greater than 5 mm between compartments,
compartment and sub-compartment, or sub-compartments shall be excluded from the
volume calculation, which is consistent with the calculation method for solid foam
insulation structures.
c) For a cross-shaped double-leaf door structure, where a hollow partition is used to
separate the space, with the left and right sides forming a temperature zone, the entire
partition can be considered out of place. For a cross-shaped double-leaf door with a
solid partition in the middle, it is considered in place, and the middle partition is not
counted in the volume.
NOTE. the hollow area must not be less than 20% of the partition area.
d) For drawer-type compartments or sub-compartments, when measuring the volume,
the drawers and their rails are considered out of place. The depth is measured from
the rear inner wall to the location of the drawer front door lining. For sub-
compartments, the depth is measured from the rear inner wall to the edge of the shelf
or the outer edge of the drawer (whichever is greater).
7.2 Energy Consumption Test
With the exception of the following, the energy consumption test shall be calculated in
accordance with the provisions of IEC 62552-3.
a) During the energy consumption test, motor-driven compression-type refrigerating
appliances are tested at the ambient temperature specified in IEC 62552-3, while
semiconductor refrigerating appliances are tested at an ambient temperature of 25 °C.
b) During the energy consumption test, the variable temperature compartment is tested
in accordance with the selected compartment type corresponding to the characteristic
temperature in the middle or upwards from the middle (only when the middle
temperature value is not the characteristic temperature point specified in the Standard,
select the nearest one upwards from the middle) of the temperature range specified by
the manufacturer. For example, if the variable temperature compartment has a
temperature range of 14 °C ~ 10 °C and the variable temperature compartment is
specified as meeting the requirements of “two-star” compartment, “one-star”
compartment, “zero-star” compartment, chill compartment and fresh-food
compartment, first, the middle value of the temperature range is 2 °C, and the nearest
characteristic temperature upwards from the middle is 0 °C, hence, the test is
conducted in accordance with the “zero-star” compartment. If the variable
temperature compartment has a temperature range of 7 °C ~ 10°C and a middle
temperature of 1.5 °C, the nearest characteristic temperature upwards from the middle
is 2 °C, hence, the test is conducted in accordance with the chill compartment. If an
appliance with a variable temperature compartment changes its classification when
adjusting the variable temperature compartment between different compartment types,
then, the energy consumption test shall be conducted under each appliance
classification. For example, a convertible freezer / refrigerator (cabinet) shall be tested
both when operating as a refrigerator and when operating as a freezer, with the higher
energy consumption labeled.
c) When energy consumption needs to include the energy consumption of deep
temperature compartment, the deep temperature compartment shall be configured
with temperature measurement points in accordance with those for frozen pantry
compartment, and the energy consumption test shall be conducted with the
temperature control device adjusted to keep the temperature of the deep temperature
compartment below or equal to its characteristic temperature.
d) For intelligent defrosting refrigerating appliances, at least four different defrost
intervals shall be provided.
e) Semiconductor refrigerating appliances are exempted from the load processing
energy consumption test. Motor-driven compression-type refrigerating appliances
shall undergo a load processing energy consumption test with the following load
processing requirements.
1) Load processing water consumption is calculated based on the rated volume.
2) Selection of load processing compartment.
---If the appliance is a refrigerator-freezer, then, the load processing test shall be
conducted in the largest fresh-food compartment and the largest freezer
compartment;
---If the appliance is not a refrigerator-freezer but has both unfrozen pantry
compartment and frozen pantry compartment, then, during the load processing test,
the fresh-food compartment shall be preferentially loaded in the unfrozen pantry
compartment, and if no fresh-food compartment is available, the compartment
with the largest volume shall be loaded. For frozen pantry compartments, a “three-
star” or “four-star” compartment shall be preferentially loaded. If no “three-star”
or “four-star” compartment is available, then, the compartment with the largest
volume shall be loaded. If there are two identical compartments that meet the
conditions of load processing in the frozen pantry compartment or unfrozen pantry
compartment that needs to be loaded, then, the loading compartment
recommended by the manufacturer shall be selected for load processing (only one
of each type of frozen pantry compartment or unfrozen pantry compartment shall
be loaded). If the manufacturer does not offer recommendations, then, the
compartment on the far right or bottom floor shall be selected for load processing.
3) When multiple compartments need load processing, the order of door opening
for load processing is as follows.
---If multiple compartments need load processing, then, the doors of the
corresponding compartments to be loaded shall be successively opened for load
processing;
---If both frozen pantry compartment and unfrozen pantry compartment require load
processing, then, the unfrozen pantry compartment shall be loaded first, followed
by the frozen pantry compartment. The door opening and closing time, as well as
load processing time for each compartment, is 1 minute;
---If the compartment to be loaded has two doors, then, both doors shall be
simultaneously opened. If the compartment to be loaded has multiple exterior
doors, including drawer-type exterior doors, then, the part with the larger volume
shall be selected for load processing, and only the exterior door required for load
processing shall be opened;
---If two doors or drawers need to be opened, but they may interfere with each other,
open one door first for load processing and keep it open, then, open the other door
for load processing and maintain the open state for 1 minute. The time from the
first door opening to the final closing of all exterior doors shall maintain 1 minute.
4) Load processing requirements for the compartments of chest appliances.
---During load processing, for the fresh-food compartment of a chest refrigerator-
freezer or chest refrigerator, refer to Figure 1 a) for load processing;
---For the freezer compartment of a chest refrigerator-freezer or chest freezer, if it
does not have a compressor step, place ice cube trays on both sides, centered on
TMP11; if it has a half-width compressor step, place ice cube trays evenly along
the extended sides, centered on TMP11 [see Figure 1 b)]; if it has a full-width
compressor step, place ice cube trays in a sequential order, centered on TMP11,
from the center to both sides [see Figures 1 c) and 1 d)]. When the number of ice
cube trays is odd, align the center ice cube trays with TMP11, and position the other
ice cube trays symmetrically along the centerline; when the number is even, place
the ice cube trays symmetrically along the centerline; fill the first column first,
then, proceed in the opposite direction, see Figure 1 for a schematic diagram. It
shall be ensured that there is a distance of approximately 25 mm between ice cube
trays, and between ice cube trays and the walls and sensors. If space limitations
prevent the ice cube trays from being placed as shown, then, adjust their
orientation based on the above principles.
5) When calculating the load processing energy consumption, use the characteristic
temperature of the compartment being loaded.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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