PowerSpout
TRG installation 2018
Last revised July 2018
© 2018 EcoInnovation Ltd (NZ)
Page 27
A PowerSpout TRG unit is 430 mm high.
A framed timber base is typically made from 100x50
timbers and covered in 12-17mm thick plywood sheet
on top with
a hole 320 x 320mm
cut for the exhaust
water.
Allow for easy disconnection and removal of the whole
turbine from the site, to dismantle the turbine and
replace the bearings.
Sump and tailrace
Water falling from the underside of the turbine must be
channeled back into a watercourse without causing
erosion or flooding.
Often the space under the turbine is open to the
surrounding air. If the noise level of the turbine is
a critical concern then we suggest enclosing the
sump to reduce noise emissions from the turgo
rotor. Arrange for the water to drain out below the
surface, creating a "trap" to prevent any air
pathway for the sound.
Do not seal this sump chamber completely. Air
must enter via a small hole to replace bubbles
swept away by the tailrace, or the level will rise
and flood the turbine runner.
Indoor turbine mounting
At sites where no water leakage can be allowed (slip hazards for staff etc) you can attach
sealing strips of adhesive neoprene to the base of the turbine before bolting it down to
ensure the turbine is completely sealed around the base. We also advise that for indoors
situation you have a perimeter lip on your turbine base. Some water seepage is inevitable
over time. A lip will trap this seepage and it can then be drained off rather than spread over
the floor.
In situations where there is a high risk of dropping tools into the floor sump you should cover
the floor opening with stainless steel mesh so that any dropped tools or parts will not
disappear under the floor. This tends to apply to industrial sites, including common
applications such as city water intake reservoir facilities for control valves and
instrumentation power, and power for large hydro schemes at the intake. This precaution is
not required at domestic sites where the turbines are typically mounted outside.
A mesh (or exhaust pipe) over the exhaust water opening will prevent access
into the rotating parts from underneath, thus preventing serious damage to the
fingers of inquisitive children. It is important that the installer makes the site safe
and that no rotational or electrical hazards exist.
