Introduction
Modern requirements for energy efficiency, compliance with standards, and responsibility to consumers force industrial enterprises to implement retrofitting and modernization of production equipment. Replacing old motors with highly efficient IE4/IE5 models not only meets legal requirements, but also provides significant economic benefits through reduced energy consumption, increased service life and reduced maintenance costs.
Evaluation of the old system
A full evaluation of the current system must be performed before beginning the retro-lift. The main criteria for analysis:
| Criterion | Assessment | Standard |
|---|---|---|
| Efficiency of energy consumption | IE1 (old type) | DSTU 4444:2018 |
| Term of service | 5-7 years old | ISO 14001:2015 |
| Energy consumption, kW | 11.5 | EN 60034-2-1:2014 |
| Minimum power, kW | 9.8 | ISO 50001:2018 |
| Energy cost, hryvnias/kWh | 0.22 | UkrSEPRO 2023 |
Modern alternatives
Today, the introduction of IE4/IE5 engines allows for a significant improvement in energy efficiency. Below is a comparison table of old and new technologies:
| Indicator | Old IE1 engine | New IE5 engine |
|---|---|---|
| Efficiency, % | 72% | 93% |
| Energy consumption, kW | 11.5 | 9.2 |
| Minimum power, kW | 9.8 | 8.3 |
| Service life, years | 5-7 | 10-12 |
| Price, UAH | 12,000 | 18,500 |
| Cost of energy, hryvnias/kWh | 0.22 | 0.22 |
Calculation of return on investment
Energy savings, reduced repair costs and reduced downtime are important to calculate return on investment (ROI).
An example of a calculation for an engine with a power of 11.5 kW:
- Annual energy: 11.5 kW * 2000 hours = 23,000 kWh
- Energy savings: 11.5 - 9.2 = 2.3 kW
- Annual savings: 2.3 kW * 2000 hours * 0.22 UAH/kWh = 1012 UAH
- Implementation cost: UAH 18,500
- Investment return period: 18,500 / 1012 ≈ 18.2 months
In addition, a reduction of downtime by 50 hours per year corresponds to savings of UAH 1,000 per year. This adds to the total savings of UAH 10,000 per year.
Implementation plan
The introduction of new engines should be phased to minimize the impact on production:
- Planning: Determination of critical points, analysis of the work cycle, selection of engines.
- Purchase: Obtaining IE5 motors from UNITEC-D GmbH, which meet CE standards, UkrSEPRO, EN 60034-2-1:2014.
- Installation: Replacement of old engines with new ones, taking into account the place of installation and operating conditions.
- Commission: Function check, settings, energy consumption calculation.
Technical challenges
The following problems may occur during implementation:
- Surface Compatibility: Older engines may have different dimensions, which requires adaptation.
- Electrical compatibility: Check voltage, frequency, force and clearances.
- Lifetime: Older engines may have a high level of wear and tear, requiring additional maintenance.
Solution: The use of SKF 22326CC/C3W33 motors, which meet the ISO 14001:2015 standard, ensures reliability and reduces repair costs.
Use case
In one of the Ukrainian factories, 50 IE5 engines were installed instead of the old IE1. Results:
- Increase in efficiency up to 93%.
- Reduction of energy consumption by 20%.
- Reduction of downtime by 50 hours per year.
- Increase in service life by 5 years.
- Annual cost savings: UAH 10,000.
Commission and confirmation
Before putting it into operation, you must pass a series of tests:
- Energy tests: Measurement of energy consumption according to EN 60034-1:2014.
- Duration of service: Determination of conformity to ISO 14001:2015.
- Electrical compatibility: Test according to EN 60034-2-1:2014.
- Confirmation of compliance: Confirmation using CE, UkrSEPRO certificates.
Conclusion
Replacing old motors with highly efficient IE4/IE5 models is an effective way to improve energy efficiency and reduce costs. The introduction of SKF 22326CC/C3W33 motors ensures high reliability and compliance with standards. For detailed information on components and manufacturing solutions, visit the UNITEC-D E-Catalog.
Sources
- EN 60034-2-1:2014 - Energy efficiency of engines.
- ISO 14001:2015 - Environmental management systems.
- DSTU 4444:2018 - Energy efficiency standards.
- UkrSEPRO 2023 – Energy efficiency standards of Ukraine.