Hydroelectric DC Charging
Use to charge a 12, 24 or 48 volt battery 24 hours a day
either alone or with solar modules, wind generator or engine generator. A 100
gallons per minute of water falling 10 feet or 5 gallons per minute falling 200
feet through a pipe can generate 80 watts. This is about 1.9 KiloWatt hours a
day and would equal about five 75 watt solar modules in a 5 peak sun hour
A diversion type regulator and dump load is needed to prevent battery overcharging.
The amount of power available depends on the dynamic head, the amount of
water flow and the efficiency of the hydroelectric unit.
Most micro hydroelectric turbines operate from the pressure
at the bottom end of a pipeline. This pressure is measured in pounds per square
inch (PSI) and is directly related to the head, or vertical distance from where
the water goes into the pipe at the top of the pipeline, to the turbine located
at the bottom of the pipeline.
You should know your Total Head, Flow rate in gallons per
minute, Pipe length needed, Wiring distance from hydro unit to batteries.
in Feet times Flow in GPM
divided by 10 will equal the approximate Watts available
Low Voltage Hydroelectric
Permanent Magnet Alternator with rectified DC output
400 watt for 12 volt
800 watt for 24, 48, 96 volt.
Older style with Harris housing and bronze
1 nozzle LV
Hydro Turbine W522 60 lbs
2 nozzle LV Hydro Turbine W523
60 lbs $1450
3 nozzle LV Hydro Turbine W524
60 lbs $1500
4 nozzle LV Hydro Turbine W525
60 lbs $1550
Specify voltage 12V, 24V, 48V, or 96V
Available Nozzle Sizes: 1/8", 3/16", 1/4",
5/16", 3/8", 7/16", 1/2", 5/8"
Extra nozzles are
These units use a cast aluminum housing and now have a stainless steel turgo
runner. This turgo is slightly more efficient and is longer lasting than the
bronze pelton runner. All hardware is stainless steel, and nozzle
holders and nozzles are brass. Units will work on pressures from 20psi to
180psi.The alternator is a brushless permanent magnet, 12 pole, with 2 x
6203 sealed bearings. These commonly available bearings should be changed every 4 - 10 years,
depending on use. The alternating current from the alternator goes through
the water-cooled rectifier to produce DC for your battery. The unit comes
complete with an induction amp meter and 1'' flexible hose for easy hook-up.
We recommend fusing the wire near the batteries. Units have a 2 year factory
warranty. A diversion type regulator and dump load is needed to prevent
Hydro Pelton Turbines
12 - 24 - 48 volt models
with 1 nozzle W512 70
with 2 nozzles W513
with 4 nozzles W514
Bronze Pelton Runner
W521 5 lbs $295
Fan Kit for over 500 watts 6 lbs
|Head Range is 20’ to 600’,
Flow Range is 4 to 250 GPM
PM Alternator 1000 watt.
This turbine uses a cast bronze pelton wheel, aluminum housing and a
Permanent Magnet, brushless alternator for better efficiency, less
maintenance and long life. A diversion type regulator and dump load is
needed to prevent battery overcharging.
Make your own hydro turbine with these runners.
Bronze Turgo Runner
Has 4” pitch diameter (the place where the center of the
water jet is aimed). For up to 1” nozzle. Fits Ford or Delco alternator, has
5/8” threaded hole.
W519 10 lbs
Stainless Steel Turgo Runner
This is the same runner as used on the new Low Voltage
Hydroelectric Generator. Hydraulic pitch diameter is 4". Runner is
5-1/2" outside diameter, 1-1/16" thick. Mounting hole is 17mm
threaded. It is more durable and longer lasting than Bronze.
For up to 1"nozzle. W526 5 lbs
alternators an extension adapter is used
to position runner an adequate distance from the car alternator. Adapter is
about 3" long. One end threads into runner and the
other end has female threads for the alternator . W527 1 lb $35.
Harris Silicon Bronze Pelton Runner
Fits GM and Ford Shaft, 5” diameter, 4” hydraulic
diameter, 85-90% efficient, for up to 1/2" nozzle. W521 8 lbs
& SITE ASSESSMENT
To determine the power available at a site, head and
flow measurements must be taken. Flow is the rate at which water
moves, measured in liters per second (l/s) or gallons per minute (gpm). This can
be measured by channeling the water into a pipeline, then into a container of a
known volume, noting the time it takes to do so. A weir can be used to measure
flows in larger streams. Head can be measured by using a transit, by
looking along a level, or by using a pressure gauge at the end of the
pipeline. An altimeter can also be used, so long as it is accurate, and
It is important to keep
in mind that output can only be accurately determined if head and flow
measurements are made correctly, so care should be taken during this
process. Two other important factors in a site assessment are system voltage,
and transmission distance. The voltage and distance the power must travel
can affect the efficiency and cost of your transmission lines.