GB 21455-2019Minimum allowable values of energy efficiency and energy efficiency grades for room air conditioners (English PDF)

Foreword

This Standard was drafted in accordance with the rules in GB/T 1.1-2009. This Standard serves as a replacement of GB 12021.3-2010 The Minimum Allowable Value of the Energy Efficiency and Energy Efficiency Grades for Room Air Conditioners, GB 21455-2013 Minimum Allowable Values of the Energy Efficiency and Energy Efficiency Grades for Variable Speed Room Air Conditioners. In comparison with GB 12021.3-2010 and GB 21455-2013, other than editorial modifications, the main technical changes are as follows:

---The Scope is modified (see Chapter 1);

---The product's energy efficiency rating indexes are modified (see Chapter 4);

---The product's minimum allowable values of energy efficiency are modified (see 5.1). This Standard was proposed by Standardization Administration of the People's Republic of China; Resource Conservation and Environmental Protection Department of National Development and Reform Commission. This Standard shall be under the jurisdiction of Standardization Administration of the People's Republic of China. The main drafting organizations of this Standard. China National Institute of Standardization; GREE Electric Appliances, Inc. of Zhuhai; Guangdong Midea Refrigeration Equipment Co., Ltd.; Qingdao Haier Air Conditioner Co., Ltd.; China Household Electric Appliance Research Institute (CHEARI); Hefei General Machinery & Electrical Products Inspection Institute; Beijing University of Technology; Shanghai Jiao Tong University; Shanghai Highly (Group) Co., Ltd.; South China University of Technology; Emerson Research and Solutions Center; International Copper Association Ltd. China; Zhejiang Sanhua Intelligent Control Co., Ltd.; DAIKIN (China) Investment Co., Ltd.; Sichuan Changhong Air Conditioner Co., Ltd.; Shanghai MITSUBISHI Electric MITSUBISHI Air Conditioner Appliance Co., Ltd.; AVIC Electromechanical (Shenyang) SANYO Refrigeration Equipment Co., Ltd.; Vkan Certification & Testing Co., Ltd. (CVC); Panasonic Appliances Air-conditioning (Guangzhou) Co., Ltd.; DAIKIN Device (Xi'an) Co., Ltd.; Guangdong GMCC Refrigeration Equipment CO., Ltd.; Zhuhai LAMDA Compressor Co., Ltd.; Panasonic Appliances Compressor (Dalian) Co., Ltd.; Ningbo AUX Electric Co., Ltd.; Guangdong CHIGO Air Conditioning Co., Ltd.; Hisense (Shandong) Air Conditioner Co., Ltd.; TCL Air Conditioner (ZHongshan) Co., Ltd.; Xi'an Qingan Refrigeration Equipment Co., Ltd.; The main drafters of this Standard. Cheng Jianhong, Tan Jianming, Zhang Hao, Zhang Mingjie, Cai Ning, Zhang Mingsheng, Li Hongqi, Ding Guoliang, Zhou Yi, Wu Jianghong, Guo Weihua, Liu Meng, Shen Juan, Yuan Ze, Zhang Jianqiang, Chen Jin, Liu Fan, Lu Dongming, Jiang Huawei, Wu Zhidong, Chen Junliang, Jia Weiqiang, Yang Jingtao, Xie Lichang, Zhou Yingtao, Zhang Tianshun, Zheng Chongkai, Hu Gen, Lu Hongwei, Sun Min, Yang Jie, He Tingting. The issuing of the previous versions.

---GB 12021.3-1989, GB 12021.3-2000, GB 12021.3-2004, GB 12021.3-2010;

---GB 21455-2008, GB 21455-2013. Minimum Allowable Values of the Energy Efficiency and Energy Efficiency Grades for Room Air Conditioners

1 Scope

China's mandatory energy efficiency standard for room air conditioners - the split and window units sold by the tens of millions each year, and the single largest driver of the summer electricity peak in the country. It specifies the energy efficiency grades, the minimum allowable values of energy efficiency and the test methods for room air conditioners. This edition is the one that changed the market, because it did two things at once. It brought the fixed speed and the variable speed machines under a single set of grades, ending the arrangement in which the two were rated on different indices and could not be compared by a purchaser standing in a shop. And it set those grades on the seasonal indices - the annual performance factor, covering the cooling and, for heat pumps, the heating season - so that a machine is judged on the energy it uses across a year of real load and temperature rather than at one design point. Together those two changes made the label meaningful and pushed the fixed speed machine, which cannot compete on a seasonal index, out of the top grades and eventually off the market. The grades are tabulated by rated cooling capacity, the minimum allowable value is the threshold below which a unit may not be manufactured, imported or sold, and the test methods refer the measurement back to the product standards so that the label figure and the compliance figure are the same figure. Issued on 31 December 2019 and in force since 1 July 2020, it replaces GB 21455-2013 and GB 12021.3-2010.

This Standard specifies the energy efficiency grades, the minimum allowable values of energy efficiency and test methods for room air conditioners. This Standard is applicable to room air conditioners which adopt air-cooled condensers and fully enclosed electric compressors, and with a rated cooling capacity not greater than 14,000 W and with a climate type T1, as well as low ambient temperature air source heat pump air heaters with a nominal heating capacity not greater than 14,000 W. This Standard is not applicable to mobile air conditioners, multi-connected air conditioning units and air-duct air conditioners.

2 Normative References

The following documents are indispensable to the application of this document. 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 7725-2004 Room Air Conditioners

GB/T 35758-2017 Household Electrical Appliances - Measurement of Standby Power

JB/T 13573-2018 Low Ambient Temperature Air Source Heat Pump Air Heaters

3 Terms and Definitions

What is defined in GB/T 7725-2004 and JB/T 13573-2018, and the following terms and definitions are applicable to this document.

3.1 Minimum Allowable Values of Energy Efficiency for Room Air- conditioners Minimum allowable values of energy efficiency for room air-conditioners refers to the minimum allowable values of energy consumption efficiency during the cooling and heating operation under specified operating conditions.

3.2 Minimum Allowable Values of Energy Efficiency for Low Ambient Temperature Air Source Heat Pump Air Heaters Minimum allowable values of energy efficiency for low ambient temperature air source heat pump air heaters refers to the minimum allowable values of heating seasonal performance factor during the heating operation under specified operating conditions.