GB/T 41252-2022 in English
VALIDEvaluation method of energy efficiency on discrete manufacturing
- Issued on:2022-03-09
- Implemented on:2022-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
《GB/T 41252-2022离散制造能效评估方法》由TC124（全国工业过程测量控制和自动化标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
Analysis of the core content of the standard
This standard establishes a multi-level energy efficiency evaluation system including production equipment, production line, workshop, etc., and innovatively proposes a dual-dimensional analysis model of energy flow and material flow. The main technical points include:
| Evaluation dimensions | Core indicators | Calculation formula | Typical threshold |
|---|---|---|---|
| Equipment energy efficiency | Energy consumption per unit of production capacity | ηC=E/Mp | ≤0.85kWh/piece |
| Process management | Equipment operation rate | ηO=TDa/TDr | ≥85% |
| Economic output | Energy consumption per 10,000 yuan of output value | - | ≤0.12tce/10,000 yuan |
Key technological breakthroughs
Application example in wheel hub manufacturing workshop
A company improved the thermal efficiency of gas by 18.7% by implementing the heating furnace air-fuel ratio optimization solution recommended by the standard; after adopting the process time balance algorithm, the operating rate of machining equipment increased from 72% to 89%.
Implementation Recommendations
- Data Collection Specifications: Establish an IoT monitoring system covering energy metering (electricity, gas, water) and material flow
- Evaluation Period Setting: It is recommended to conduct short-term evaluations based on production batches and conduct trend analysis based on quarterly/annual periods
- Improvement Priority: Prioritize heat treatment equipment and compressed air systems which account for the top 20% of energy consumption
Standard Evolution Analysis
Compared with the ISO20140 series of international standards, the innovations of GB/T41252-2022 are:
- Add the energy conversion method for energy-consuming working fluids (Article 3.7)
- Refine the quality-related indicators such as rework rate/scrap rate (Formula 7-8)
- Propose a general process of five-step energy efficiency assessment (Chapter 7)
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