Mhylab Mini-Hydraulics Laboratory products

The Pelton (or impulse) turbine is particularly well suited to high head (from 60 to 700 meters) variable discharge applications. The runner consists in buckets. They are activated by the kinetic energy of the water propelled through one or more fixed nozzles. Thanks to its laboratory developments, Mhylab guarantees that its small Pelton turbines have a mechanical efficiency at the coupling of the order of 90%.

The diagonal turbine, just like the Francis, covers the range of medium heads (from 25 to 100 meters). With regards to efficiency, and thanks to their adjustable blades, Diagonal turbines are more tolerant than Francis turbines to discharge and head variations. They comprise 8, 10 or 12 inclined and adjustable blades. Mhylab has developed and successfully tested the 8- and 12- blades turbines, reaching an efficiency higher than 93%.

Axial turbines, like bulbs, and propeller turbines belong to the family known as Kaplan turbines. These are reaction turbines. The axial turbine is ideal for large discharges and low heads (from 2 to 30 meters). It is not very sensitive to flow changes. The blades and the wicket gates can be fixed or mobile. Thanks to its laboratory developments, Mhylab garantees that its Axial turbines have a mechanical efficiency of the order of 92%.

Axial turbines in water chambers are suited to very low heads (from 1 to 5 meters). This type of setup is characterized by the very great simplicity of the turbo-generators, as well as the quality of its integration in the watercourse and in the landscape.

Siphon turbines cover the range of very low heads (from 1 to 3.5 meters). The concept developed by Mhylab aims to equip existing dams on high-discharge rivers. The turbines are primed by creating a vacuum in the upper part of the conduit. To stop the turbine it is sufficient to open a flap that allows air to enter the machine. This simple and efficient system avoids the expenditure of a valve.

Pico turbines are used with very low heads (from 1 to 5 meters). They are characterized by their power which goes from 1 to 10 kW. They are suitable both for the electrification of isolated sites, and for the renovation of old mills. Existing models are all too often unreliable and inefficient; Mhylab is looking for a partner ready to invest in this field, so as to develop an economic and efficient machine.