Our engineering team spent four months on a Turkmenistan tunnel construction that required a custom axial fan solution for a power generation application. The technical challenges were significant, but the approach we developed has since been applied to six other projects. This is the full story.
Project Background
A Turkmenistan shopping mall development required a complete ventilation system including axial fan units for dust collection. The project specifications called for 10,000 to 100,000 m3/h with static pressure capability of 1,500 to 8,000 Pa, operating in ambient conditions up to 0 to 80 C. The facility serves power generation applications and must comply with API 661 and IECEx requirements.
The client had experienced equipment failures with a previous vendor and approached Keruite for a turnkey solution including supply, commissioning, and performance verification.
Energy consumption is the single largest operating cost for a axial fan in a power generation facility. Over a 15-year equipment life, energy costs typically exceed the initial purchase price by a factor of 5 to 8. This means that even small efficiency improvements โ selecting an IE2 motor instead of a lower class, optimizing the duct design to reduce system resistance, or installing a VFD for variable load applications โ compound into significant financial savings over time.
Technical Approach
Our engineering team selected a axial fan with carbon steel construction, an IE2 efficiency class motor rated at 132 kW, and an impeller balanced to G6.3 grade. The duct design was optimized using CFD analysis to minimize system effect at the fan connections, which is critical for achieving the specified 10,000 to 100,000 m3/h delivery.
The motor insulation class was upgraded to Class H to handle the ambient temperature range of 0 to 80 C. Each unit was factory-tested on our AMCA-standard test rig before shipment.
Documentation is another area where power generation facilities in Turkmenistan often fall short. A comprehensive axial fan record should include the original specification, the certified performance curve, commissioning baseline data, all maintenance readings, and a log of any modifications or repairs. This documentation supports warranty claims, compliance audits (API 661, IEC 60034), and replacement planning. Facilities that maintain this documentation consistently report faster regulatory inspections and lower overall compliance costs.
Results After One Year
The system has been operating for 12 months with zero unplanned shutdowns. Quarterly vibration monitoring shows no degradation trends. The client reported a 15 percent reduction in ventilation energy costs compared to the previous system, attributed to the higher efficiency axial fan design and the IE2 motor.
The measured operating points were within 3 percent of design values for all units during commissioning. The performance documentation includes certified test curves, vibration baseline readings, and a 10-year spare parts list.
In practice, this means that power generation facilities in Turkmenistan should establish a clear specification document before approaching vendors. The document should include the design airflow (10,000 to 100,000 m3/h), required static pressure (1,500 to 8,000 Pa), operating temperature range (0 to 80 C), material preference (carbon steel), noise limits (45 to 55 dB(A)), and any certification requirements (IECEx, IECEx). Projects that skip this step typically experience 20 to 30 percent more change orders during installation, which drives up costs and delays commissioning.
| Parameter | Specification |
| Airflow Range | 10,000 to 100,000 m3/h |
| Static Pressure | 1,500 to 8,000 Pa |
| Motor Power | 132 kW (IE2) |
| Material | carbon steel |
| Temperature Range | 0 to 80 C |
| Impeller Balance | G6.3 (ISO 1940) |
| Noise Level | 45 to 55 dB(A) |
| Certifications | IECEx, IECEx |
| Standards | API 661, IEC 60034 |
Integration with Building Systems
For modern power generation facilities in Turkmenistan, a axial fan system typically integrates with the building management system. Control points include fan start/stop, speed setpoint via VFD, status feedback, alarm feedback, and measured airflow or pressure. The IE2 motor combined with a VFD allows precise control across the full turndown range.
Ensure the control system meets IECEx requirements for emergency operation modes. Fire safety fans must start automatically on alarm signal and reach full speed within 60 seconds. The API 661 standard may define specific response time and performance requirements for emergency ventilation.
Procurement and Lead Time Planning
For power generation projects specifying axial fan equipment in Turkmenistan, procurement should begin 12 to 16 weeks before the required delivery date for standard configurations (carbon steel construction, IECEx certified). Custom specifications such as special materials or multiple certifications (IECEx and IECEx) may extend lead times to 20 weeks.
When requesting quotations, provide the complete specification including airflow (10,000 to 100,000 m3/h), pressure (1,500 to 8,000 Pa), operating temperature (0 to 80 C), noise requirement (45 to 55 dB(A)), and certification requirements. Incomplete specifications lead to assumptions that may not match actual site conditions.
Common Specification Mistakes
After reviewing hundreds of axial fan specifications for power generation projects, several recurring mistakes stand out. The most common is specifying only design airflow and pressure without stating the actual system curve. The second is neglecting system effect, which can reduce delivered airflow by up to 20 percent. The third is under-specifying material requirements โ a axial fan in a mildly corrosive environment will develop impeller fouling within 3 to 5 years if carbon steel is used without appropriate protection.
Other frequent issues include forgetting to specify the motor efficiency class (IE2 should be the minimum for new installations), not requiring factory performance test data, and omitting noise requirements (45 to 55 dB(A)).
Conclusion
Working with axial fan systems in power generation applications requires attention to detail at every stage, from specification through commissioning and ongoing maintenance. The engineering parameters discussed here represent the practical reality behind successful installations. If you are planning a project in Turkmenistan or elsewhere, reach out to our engineering team for site-specific recommendations.