Modernizing Turbines: Increasing Efficiency by 20% with New Technology

The Power of Hidden Potential

Many older hydropower plants operate with turbines designed in the mid-20th century. However, modern technology can extract significantly more energy from the same water flow. At asumb, we implement advanced retrofitting techniques to increase your plant’s efficiency by up to 20%. Consequently, your existing asset starts generating more revenue without expensive civil works.

1. 3D CFD Modeling: Rewriting the Flow

The most critical advancement is Computational Fluid Dynamics (CFD).

• The Method: We create a precise 3D digital twin of your water passage.
• In the past, turbine blades were designed using manual calculations.
• Today, supercomputers simulate billions of water particles.
• Therefore, we can design a new runner geometry that eliminates turbulence.
• Specifically, this optimization alone can recover 5% to 8% of lost energy.

2. Laser-Cladding and Advanced Coatings

Surface friction is a silent thief of efficiency.

• The Problem: Old runners suffer from cavitation and surface roughness.
• The Solution: We use High-Velocity Oxy-Fuel (HVOF) coating and laser-cladding.
• Specifically, these technologies apply a microscopic, ultra-smooth layer of tungsten carbide.
• As a result, the water slides over the blades with zero resistance.
• Furthermore, this protects the turbine from wear for decades.

3. Adjustable Speed Technology

Traditional turbines are designed for a fixed flow. However, river levels change constantly.

• The Technology: We install Adjustable Speed Drive (ASD) systems.
• This allows the turbine to maintain peak efficiency even when the water head is low.
• Consequently, the station produces more power during dry seasons.
• Thus, you gain a massive advantage in «intermittent» weather conditions.

4. Real-World Impact: The 20% Gain

In a typical modernization project, we combine these technologies. First, we replace the old runner with a CFD-optimized one. Second, we upgrade the bearings to low-friction ceramic or composite types. Finally, we implement digital governors. Clearly, the cumulative effect results in a total efficiency boost of 15% to 22%.

Expert Insight: Why Act Now?

Modernization is much faster than building a new station. Specifically, you already have the pipes and the grid connection. By upgrading only the core «organs» of the plant, you double the value of your infrastructure. Ultimately, modern technology turns an aging machine into a high-performance energy generator.