Gaftoi Daniel

1. VLH Turbine (Very Low Head)

Low head

Navigation dams

Hydropower unprofitable due

to very high investment

A lot of existing sites which

do not produce electricity

MJ2 Technologies VLH Turbine

Small infrastructure

Easy installation

Viable

VLH turbine - description

Integrated

generating set

Kaplan runner with 8 adjustable

blades

Fix distributor with 18 blades

Trash rack

Generator directly coupled to the

runner shaft

Automatic trash rack cleaner

Drunner : 3.15 5.00 (m)

H : 1.4 3.2 (m)

Qinst : 10 30 (mc/s)

P : 100 500 (kW)

VLH turbine - description

Mobile module it can be raised from the water in order to let the

flood to pass and for inspection/ maintenance purpose

Double regulated adjustable blades and variable speed

Water speed throw turbine smaller than 2m/s

The module can be used as a gate

Fish Friendly turbine 100% surviving

VLH Turbine example (1)

Millau France (pilot site)

Head: 2.5 m

Installed flow: 22.5 mc/s

Installed power: 410 kW

Energy: 2 GWh/ year

Runner diameter: 4.5 m

In function: March 2007

VLH Turbine example (2)

Marcinelle Belgium

(navigation dam)

Head: 3 m

Installed flow: 2 x 15 mc/s

Installed power: 650 kW

Energy: 2 GWh/year

Runner diameter: 3.55 m

instalation: Novembre 2011

Price: 1.000.000 Euros

Time needed for up/ down 20 min

VLH Turbine example (3)

Moncey France

(new site)

Head: 2.10 m

Installed flow: 2 x 12.8 mc/s

Installed power: 2 x 207 kW

Runner diameter: 3.55 m

2. Floated turbines - Rutten

Siphon turbine S (Des Grosses Battes, Liege)

Head: 3 m

Installed flow: 27,5 m3/s

Installed power: 486 kW

Energy: 2,6 GWh/year (2 years)

Runner diameter: 3,25 m (92 rot/min)

4 adjustable blades (Kaplan)

Weight turbinated water

Floated turbine 2 - Rutten

Turbine D

Power plant realized from modules

Recommended for low head navigation dams

No civil works

Without regulation ON / OFF

H: 1.80 4.00 m

Q : 10 18 mc/s

P : 120 560 kW

Downstream min level : 2.5 4 m

Fish Friendly

Floated turbine 2 Rutten

Turbina D (Hun - HauteMeuse) - testing

Power plant realized from 6 modules

Head: 2.8 m

Installed flow: 6 x 17 m3/s

Installed power: 6 x 400 kW

Energy: 10 GWh/year

Investment: 6 mil Euros

Weight: 350 t

Height of the metal structure: 8 m

3. Archimedes' screw turbine

Used in ancient times as a water pump.

For the last years the screw was used as a

turbine

Fish Friendly Turbine (the screw was used for

movement of the fish from a lake to another)

Rotation speed : 28 30 (rpm)

Head : 1 10 (m)

Qinst : 0.1 15 (mc/s)

P ower: max 200 (kW)

Archimedes' screw turbine

The screw has an efficiency of 87% for low heads [ 1 10 m].

Robustness it is given by the simple working and construction principles, and also

the waste tolerance

In Europe are installed more than 200 Archimedes screws.

Thank you for your attention