Hydropower and Power Generation
INDUSTRY

Wedge Wire Screens for Hydropower and Power Generation

Hydropower plants and power generation facilities depend on intake screens that protect turbines, condensers, and cooling systems from debris and aquatic life. Our Coanda intake screens use the Coanda hydrodynamic effect to draw water through self-cleaning slots with no moving parts, no power, and no operator intervention — ideal for run-of-river hydroelectric, small hydro, and remote power installations. Cylindrical and panel screens serve cooling water intakes and pre-treatment at thermal and combined-cycle plants.

APPLICATIONS

Where Our Screens Work

Run-of-River Hydroelectric Intake

Coanda screens for small hydro and run-of-river plants, fish-safe and maintenance-free.

Cooling Water Intake

Cylindrical T-screens at low approach velocity for thermal and combined-cycle power plants.

Penstock and Turbine Protection

Pre-screening to remove debris before turbine inlets, protecting blades and seals.

Condenser Water Pre-treatment

Flat and cylindrical screens to remove particulates upstream of condenser tube banks.

Fish Protection at Intakes

Compliance with US Clean Water Act 316(b) at ≤ 0.15 m/s (0.5 fps) approach velocity.

Remote and Off-Grid Hydro

Passive Coanda intake screens for installations without power or operator presence.

Small Hydro Standardized Coanda Sizes

Two to three standardized hydraulic sizes with shortened delivery for sub-5 MW run-of-river installations — the most under-served segment in the global Coanda market.

MATERIALS

Materials for Hydropower and Power Generation

SS 304General hydro intakes with non-welded construction and freshwater service.
SS 304LWelded fresh water hydro intakes and inland plants.
SS 316LBrackish or chloride-rich cooling water.
Super DuplexCoastal seawater cooling, desalination-fed plants.

Regulatory Compliance

US Clean Water Act Section 316(b)
EU Water Framework Directive
US NOAA / NMFS fish protection standards
Fish-friendly intake standards (0.5 fps / 0.15 m/s approach velocity)
FAILURE MODES & MITIGATION

How Screens Fail — and How We Prevent It

Debris bypass during high-flow events

Coanda screens with concave geometry and acceleration plate maintain sweep velocity during freshet and storm flows, shedding leaves and bedload across the screen face.

Ice formation and frazil

Standardized Coanda installations include heated bypass sections and angled deflectors for cold-climate sites. Wedge wire shedding action resists ice anchor points.

Fish impingement and entrainment

Slot opening and through-slot velocity selected to meet NOAA/NMFS and 316(b) limits. V-wire face provides a smooth contact surface that minimizes scale loss in juvenile fish.

Cavitation and abrasive wear

Continuous-weld wedge wire and reinforced support bars tolerate high sweep velocities (2–3 m/s) without slot deformation over years of run-of-river service.

HOW TO SPECIFY

What to Send for an Accurate Quote

The more of these you can share when you request a quote, the faster we respond with a defensible specification.

Slot opening1.0 mm standard for Coanda; 3–6° wire tilt option range
Screen geometryCoanda · T-screen · cylindrical · panel
Design flowm³/s per screen; capacity 0.09 – 0.16 m³/s per metre of weir length (conservative), up to 0.35 m³/s/m optimum
Head availableDrop / fall height (m) for Coanda acceleration plate
Material gradeSS 304L · SS 316L · Super Duplex
Site water typeRiver · canal · alpine stream · brackish · seawater
Installation orientationRun-of-river weir · submerged intake · canal diversion
Fish protection criteriaSlot ≤ 1 mm; through-slot velocity ≤ 0.15 m/s (0.5 fps)

Specify Your Hydropower and Power Generation Screen

Send your application parameters. We respond within one business day.

REQUEST A QUOTE