25 energy robi v publish
TRANSCRIPT
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Presented at
Seminar and Site Visits
26-28 August, 2010
Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 1 of 27
WaterPumpingWindmills
Robert
TrunzAUREKA
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 2 of 27
Windpumps are wind driven machines for pumping water.
Total independence from the Electricity Board
No electricity bills
No expenditure for diesel
Environmentally friendly
Why Windmills?
Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 3 of 27
Cost competitive compared to diesel and solar.
Windpumps are the most economic method of pumping
water in rural areas where the average wind speed is
greater than about 3 m/s, and no grid power is available.
Windpumps have a long life potential, typically 20 years
for a well-made and well-maintained machine.
Why Windmills?
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 4 of 27
Static
water
level
Over
head
tank
max. 2000m
Wind velocity
average 3-5 m/s
9-23m
Well casing
Delivery pipe
Pump rod
Filter
Draw
down
max.
Pump
Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 5 of 27
Windspeed range applicable for windpumps
17-20Breaks twigs off trees, walking difficultGale8
14-17Whole trees move, walking slightly impededNear gale7
11-14Large branches move, wires whistleStrong breeze6
9-11Small trees in leaf swayFresh breeze5
6-8Raises dust & paper, small branches moveModerate4
4-5Leaves, small twigs & flags in motionGentle breeze3
2-3Wind felt on face, leaves rustleLight breeze2
1Direction shown by smoke, but not vaneLight air1
Windspeed range applicable for electricity generation
0Smoke rises verticallyCalm0
Speed range
(m/s)DefinitionNameForce
The Beaufort Scale
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 6 of 27
Matching valve
The AV55 windpums incorporate a
new rage of high performance
piston pumps. These pumps have
an advanced technological feature
called the matching valve that
increases the overall efficiency of
the windpump by 50% compared to
conventional windpumps.
Advantages
Simple design Requiring no extra
maintenance
Low cut-in windspeed
Improved overall efficiency
Cpover a wider range of
windspeed
Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 7 of 27
Wind Conventional drive Matching valve with
km/h 140 mm counterweight in rotor 227 mm
Water output Increase in water output
l/h l/h %
3.5 0 179 -
7 20 560 -
10 512 863 59
13 1089 1581 45
16 1541 2323 51
19 2034 2982 46
Increase in water outputMatching valve compared with conventional drive
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 8 of 27
Vertical Installation Tilt-up Installationof AV%% windmill tower
Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 9 of 27
The windmill can be used for
pumping water from deep
borewells, max. 100m depth with
the AV55 and 70 m depth with the
AV45 - as well as for low lift high
volume output from shallow wells.
For pumping underground or
surface water into a tank or
reservoir which is located higher
than the windmill head
For pumping underground water
into a tank which is not as high as
the windmill head.
B
A
ma
x.100m
max. 2000m
Range applications
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 10 of 27
AV55 Output performance at 4 m/s
windspeed
0
1000
2000
3000
4000
5000
6000
7000
20
30
40
50
60
80
100
120
140
160
200
240
280
Pumping head in ft.
Wateroutputl/h
Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 11 of 27
AV55 Output performance at 5 m/s
windspeed
0
1000
2000
3000
4000
5000
6000
7000
8000
20
30
40
50
60
80
100
120
140
160
200
240
280
Pumping head in ft.
Wateroutputl/h
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 12 of 27
Windpump maintenance
A comprehensive Maintenance Manual is provided with eachwindpump
1.Windmill and tower
Minimal maintenance required
Greasing of all bearings (two times a year)
Checking for any loose bolts and nuts (two times a year)
Cost per year : Rs. 500.00
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2. Maintenance of pump, pump rods and delivery pipe
Depends on a number of factors
Quality or water is crucial (Sand in the water of saline water)
Average cost per year varies from Rs.3000 Rs.5000.
Windpump maintenance
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 14 of 27
Pump
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Matching valve
Piston Foot Valve
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 16 of 27
From a government point of view:
windpumping is a good option, provided that large windpumps are
used, second generation windpumps can compete with electricpumps in areas with an average windspeed of 4 m/sec, or above.
From a users point of view:
Second generations windpumps can compete with electric pumps
if windpumps are subsidized.
The conclusion for the present situation is that in fact no
alternative pumping system is competitive with electric pumping as
long as electricity is given for free.
Conclusions:Comparing the ALLC of the system
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Windpump Market Study Halcrow Gilbert Associates Ltd.
0.160.31277V = 4 m/sec
0.380.75116V = 3 m/sec.
1stgen. Yellow tail copy rotor 3 m
0.050.101028V = 4 m/sec
0.120.27433V = 3 m/sec.
2ndgen. Aureka, rotor 5.5 m
Windpump
0.360.79150PV
0.170.1710005 hours pumping
Diesel
0.030.0821608 hours pumping
0.060.1110804 hours pumping
0.120.175402 hours pumping/day
Electric
Micro Econ AlccUC$ cts/m4
Macro EconAlcc US$cts/m4
Water output xhead (m4)
Pumping Technology
Table 4.6 Cost of Alternative Pumping Methods
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 18 of 27
An Economic Comparison
Before this farmer purchased the AV55 windpump, he
used a compressor pump. The site has no access toelectricity and as the ground water table was to deep
for a jet-pump, he had to use a compressor pump.
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Diesel Compressor Pump:
Engine Field Marshal : 10 HP
Compressor : 7.5 HP
Output : 2500 liter/h
Diesel consumption : 1 liter/h
Diesel price 1993 : Rs.15.00/liter
Running time 6 months/year : 30 h / week
3 months/year : 20 h / week3 months/year : 10 h / week
Cost of diesel compressor
pump complete 1993 : Rs. 25,000/-
Water output per year : 29,25,000 liter
Diesel cost per year : Rs. 17,550/-
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Water Pumping Windmills | Robert Trunz Auroville Green Practices Seminar 2010 20 of 27
Diesel Pump AV55 Windpump
Output per year 29.25 lakh liter 36.50 lakh liter
Diesel cost/year Rs.17,550 -
Capital Investment Rs.25,000 Rs.86,240
If you calculate how much money the user would have to spend on diesel to
pump 36.5 lakh liters, which is the yearly output of the windmill, you will get a
figure of Rs. 21,900 .
So in less then 5 years his windmill is paid off.
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Contact:
www.aureka.com0413-2622278
WaterPumpingWindmills
Robert
TrunzAUREKA
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green.aurovilleportal.org