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GB19762-2025
Minimum allowable values of energy efficiency and energy efficiency grades for centrifugal pumps
离心泵能效限定值及能效等级
GB 19762-2025 — действующий обязательный национальный стандарт Китая: Minimum allowable values of energy efficiency and energy efficiency grades for centrifugal pumps. Отрасль: Строительство. Тема: Энергоэффективность. Дата вступления в силу: 1 мар. 2026 г..
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Обзор требований
Этот обзор пока доступен только на английском языке.
Область применения
This standard applies to centrifugal pumps, specifically categorized into clean water centrifugal pumps (including single-stage single-suction, single-stage double-suction, pipeline, and multi-stage types) and petrochemical centrifugal pumps (single-stage and multi-stage with closed impellers transporting clean liquids). It is not applicable to non-metallic centrifugal pumps and sealless rotodynamic pumps. Manufacturers must verify their product categories against these definitions to determine compliance requirements.
Технические требования
The standard establishes a 3-tier energy efficiency grading system for centrifugal pumps, where Grade 1 represents the highest efficiency. It defines the minimum allowable values of energy efficiency (mandatory limits) which correspond to the requirements of Grade 3. For clean water pumps, the efficiency limits are determined by evaluating the pump's performance at the specified point (Best Efficiency Point, BEP) using specific mathematical formulas that factor in the specific speed and flow rate. For petrochemical pumps, the standard mandates a different calculation approach involving an efficiency baseline value and an efficiency correction value, which are adjusted based on the pump's specific speed range. Compliance with the Grade 3 efficiency limits is mandatory for market access.
Методы испытаний
The standard mandates that centrifugal pump performance tests must be conducted in accordance with the Grade 2 requirements specified in GB/T 3216 (Rotodynamic pumps - Hydraulic performance acceptance tests). The testing focuses on accurately determining the flow rate, head, and efficiency at the pump's Best Efficiency Point (BEP) to calculate the specific speed and subsequent energy efficiency grades.
Частые вопросы
What products are regulated under GB 19762-2025?
This standard applies to clean water centrifugal pumps (single-stage, double-suction, pipeline, and multi-stage) and petrochemical centrifugal pumps (single-stage and multi-stage with closed impellers). It does not apply to non-metallic pumps or sealless rotodynamic pumps.
Are there any updates from the previous version of GB 19762?
This version merges and replaces GB 19762-2007 and GB 32284-2015. It introduces a unified 3-tier energy efficiency grading system for both pump types and updates the calculation methods for efficiency baseline values and correction factors.
How are the energy efficiency grades calculated?
The evaluation relies on the specified point (BEP) and uses specific logarithmic formulas incorporating flow rate and specific speed. The testing procedures strictly reference GB/T 3216 (Acceptance tests for rotodynamic pumps).
The summary above provides a high-level overview of GB 19762-2025. 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 19762-2025 today to access all detailed parameters, calculation formulas, tables, and testing procedures.
Подсказки по применимости
- Тип
- Управление
- CCS
- F01
- ICS
- 27.010
- Компетентное ведомство
- Standardization Administration of China
- Технический комитет
- National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China
Связи
Заменяет:GB 19762-2007, GB 32284-2015