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GB 12021.2-2025: Maximum allowable values of energy consumption and energy efficiency grade for household refrigerating appliance Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB 12021.2: Historical versions
Similar standardsGB 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 ContentsForeword... 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 Appliance1 ScopeThis 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 ReferencesThe 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 Volume3 Terms and DefinitionsThe 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 for4 Classification of Refrigerating Appliances4.1 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 Consumption5.1 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 Method6.1 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 Methods7.1 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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