GB21519-2008

Minimum allowable values of the energy efficiency and energy efficiency grades for electrical storage water heaters

储水式电热水器能效限定值及能效等级

GB 21519-2008 es una norma nacional china obligatoria vigente: Minimum allowable values of the energy efficiency and energy efficiency grades for electrical storage water heaters. Sector: Electrónica. Enfoque: Seguridad eléctrica. Entrada en vigor: 1 nov 2008.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard specifies the minimum allowable values of energy efficiency, energy-saving evaluating values, and energy efficiency grades for household and similar electrical storage water heaters. It is exclusively applicable to storage-type electric water heaters and does not cover instant or other types of water heating systems. Compliance with this standard is mandatory for manufacturers targeting the Chinese market.

Requisitos técnicos

The standard establishes a 5-tier energy efficiency grading system, where Grade 1 represents the highest efficiency. It defines the minimum allowable values based on the 24h inherent energy consumption coefficient and the hot water output rate. Products must meet at least Grade 5 requirements to be legally sold, with a stepped upgrade to Grade 4 required two years after implementation. Additionally, the standard sets an energy-saving evaluating value corresponding to Grade 2, serving as a benchmark for high-efficiency products. The 24h inherent energy consumption is calculated against a baseline formula determined by the rated capacity of the heater. Manufacturers must ensure their products meet these dual metrics of energy loss and hot water delivery to achieve the desired efficiency grade.

Métodos de ensayo

The standard outlines specific testing procedures, including the capacity test, which measures the actual volume by weighing the water-filled heater. The 24h inherent energy consumption test requires precise thermocouple placement on the container and a 48-hour measurement cycle under controlled ambient temperatures. Furthermore, the hot water output rate test evaluates the heater's ability to deliver hot water by measuring the discharged water mass and temperature differentials until the output temperature drops by 20°C from its peak. Strict environmental conditions, including specific ambient temperatures and humidity levels, must be maintained during all tests.

Preguntas frecuentes

What products are regulated under GB 21519-2008?

GB 21519-2008 regulates household and similar electrical storage water heaters. It does not apply to instant water heaters.

What is the minimum energy efficiency requirement for entering the Chinese market?

Products must meet at least Grade 5 requirements as the minimum allowable value, which upgrades to Grade 4 two years after the standard's implementation date.

How is the energy efficiency grade determined?

The grade is determined by two key metrics: the 24h inherent energy consumption coefficient and the hot water output rate, tested according to the specific procedures outlined in the standard.

The summary above provides a high-level overview of GB 21519-2008. 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 21519-2008 today to access all detailed parameters, calculation formulas, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Gestión
CCS: F01
ICS: 27.010
Organismo competente: Standardization Administration of China
Comité técnico: National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China