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Ever wondered how micro hydro schemes use water to generate electricity? Then stay tuned over the next few days!
Part 1: THE INTAKE
As water flows downhill, its potential energy is converted to kinetic energy. We want to convert this kinetic energy into electricity. The water flows through a screen and down pipes to a turbine.
As water flows downhill, its potential energy is converted to kinetic energy. We want to convert this kinetic energy into electricity. The water flows through a screen and down pipes to a turbine.
This photo shows an existing intake very similar to the planned intake for Inverarish Burn.
Part 2: THE SCREEN
“The Coanda effect is the tendency of a fluid jet to stay attached to a convex surface.”
A Coanda Screen will be used on the intake. It consists of a wedge wire matrix which acts as a filter to prevent debris and any animals from getting into the pipeline.
“The Coanda effect is the tendency of a fluid jet to stay attached to a convex surface.”
A Coanda Screen will be used on the intake. It consists of a wedge wire matrix which acts as a filter to prevent debris and any animals from getting into the pipeline.
The water accelerates over the top of the screen and gets pulled into the pipeline below, maximising the water abstraction rate. This also means that the screen cleans itself of grime and debris, increasing efficiency.
http://www.crowdfunder.co.uk/raasay-community-hydro
http://www.crowdfunder.co.uk/raasay-community-hydro
