GB21347-2023

Norm of energy consumption per unit throughput of industrial silicon and magnesium

工业硅和镁单位产品能源消耗限额

GB 21347-2023 é uma norma nacional chinesa obrigatória vigente: Norm of energy consumption per unit throughput of industrial silicon and magnesium. Setor: Construção. Foco: Eficiência energética. Entrada em vigor: 1 de out. de 2024.

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 specifies the energy consumption limits for industrial silicon and magnesium unit product production. It is applicable to the calculation and assessment of energy consumption, as well as energy control for new, renovated, and expanded projects. For magnesium production, this standard applies exclusively to the silicothermic process and does not cover electrolytic or other methods.

Requisitos técnicos

The standard classifies energy consumption limits into three grades, where Grade 1 represents the lowest energy consumption and Grade 3 the highest. For industrial silicon, the limits are further categorized based on the primary reducing agent used (e.g., charcoal, mixed petroleum coke and coal, or coal). Existing facilities must comply with the Grade 3 limits, while new, renovated, and expanded enterprises must meet the stricter Grade 2 requirements. The standard also defines the statistical scope for comprehensive energy consumption, covering main, auxiliary, and affiliated production systems while deducting externally supplied secondary energy.

Métodos de ensaio

Energy consumption is calculated using a specific formula that aggregates the energy consumption of the main production system, auxiliary systems, and affiliated systems, minus any recovered and externally supplied secondary energy. The calculation relies on standard coal conversion coefficients for various energy sources and energy-consuming working fluids, referencing GB/T 2589 and GB/T 12723.

Perguntas frequentes

What products are regulated under GB 21347-2023?

It regulates the energy consumption limits for industrial silicon and magnesium unit products.

Does GB 21347-2023 apply to all magnesium production methods?

No, it only applies to the silicothermic process for magnesium smelting and excludes electrolytic and other methods.

What are the compliance requirements for new facilities under this standard?

New, renovated, and expanded enterprises must meet the Grade 2 energy consumption limits, which are stricter than the Grade 3 limits required for existing facilities.

The summary above provides a high-level overview of GB 21347-2023. 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 21347-2023 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 21347-2012, GB 31338-2014