GB21455-2019

Minimum allowable values of the energy efficiency and energy efficiency grades for room air conditioners

房间空气调节器能效限定值及能效等级

GB 21455-2019 é uma norma nacional chinesa obrigatória vigente: Minimum allowable values of the energy efficiency and energy efficiency grades for room air conditioners. Setor: Construção. Foco: Eficiência energética. Entrada em vigor: 1 de jul. de 2020.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to room air conditioners with air-cooled condensers, fully enclosed motor-compressors, a rated cooling capacity not exceeding 14000W (climate type T1), and low ambient temperature air source heat pump air heaters with a nominal heating capacity not exceeding 14000W. It does not apply to mobile air conditioners, multi-connected air conditioning units, or ducted air conditioners. This standard is mandatory for manufacturers targeting the Chinese market.

Requisitos técnicos

The standard establishes energy efficiency grades for room air conditioners, categorizing them into 5 grades for standard units and 3 grades for low ambient temperature heat pumps, where Grade 1 represents the highest efficiency. For heat pump types, grading is based on the measured Annual Performance Factor (APF), while cooling-only types are graded using the Seasonal Energy Efficiency Ratio (SEER). Manufacturers must ensure their products meet the minimum allowable values corresponding to the lowest applicable grade. For low ambient temperature air source heat pump air heaters, the energy efficiency is evaluated based on the measured Heating Seasonal Performance Factor (HSPF). The standard also sets specific minimum limits for the nominal heating Coefficient of Performance (COP) at extreme low temperatures, such as -12°C and -20°C. Products with auxiliary electric heating must meet integrated COP requirements when operating at -25°C. Additional requirements include strict regulations on standby power consumption. Units with a rated cooling capacity of 4500W or less must have a standby power not exceeding 3W (or 15W if equipped with sensors, Wi-Fi, or Bluetooth). The standard also specifies tolerance limits; the measured energy efficiency value must not be less than 95% of the labeled value, and the measured seasonal power consumption must not exceed 110% of the labeled value.

Métodos de ensaio

- SEER and HSPF Testing: Evaluated according to the methods specified in the normative appendices, using defined outdoor temperature occurrence times for cooling and heating seasons. - APF Calculation: Derived from the total seasonal cooling and heating loads divided by the total seasonal power consumption. - Standby Power Testing: Conducted in accordance with GB/T 35758-2017, requiring specific environmental conditions and high-precision measurement instruments. - Non-Steady-State Heating Test: Outlined in Appendix C to evaluate performance during defrost cycles, utilizing either the indoor air enthalpy method or the calorimeter method.

Perguntas frequentes

What products are regulated under GB 21455-2019?

It regulates room air conditioners (T1 climate type, up to 14000W) and low ambient temperature air source heat pump air heaters (up to 14000W).

Are there any updates from the previous version of GB 21455?

Yes, this version replaces GB 12021.3-2010 and GB 21455-2013, updating the scope, energy efficiency grade indicators, and minimum allowable energy efficiency values.

How is the energy efficiency of heat pump air conditioners graded?

Heat pump types are graded based on the measured Annual Performance Factor (APF), while cooling-only types use the Seasonal Energy Efficiency Ratio (SEER).

The summary above provides a high-level overview of GB 21455-2019. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 21455-2019 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Gestão
CCS: F01
ICS: 27.010
Órgão competente: Standardization Administration of China
Comitê técnico: National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China

Relações

Substitui:GB 12021.3-2010, GB 21455-2013