ID33 LUKIYANTO a Simple Double U Pipe Configuration
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A Simple Double U Pipe Configuration
to Improve Performance ofa Large-Diameter Slow-Speed
Centrifugal Impeller
YB. LukiyantoMechanical Engineering, Sanata Dharma University
Paingan, Maguwoharjo, Depok, Sleman, 55282, Yogyakarta,Indonesia
Eka WahisbullahJln. Timoho 320, Baciro, Gondokusuman, Yogyakarta, Indonesia
mailto:[email protected]:[email protected] -
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INTRODUCTION Wind energy water pumping systems
(WEWPSs) has higher efficiency (Purohit andKandpal, 2005) and lower investment (Smulders, 1996)compared to other renewable energy
water pumping systems. WEWPs are predicted to have higherdevelopment in the future (Kumar and Kandpal, 2007; Lara etal., 2011; Gopal et al., 2013) .
Wind pumps can supply water atcompetitive costs especially if it islocally manufactured (Smulders, 1996; Web-1) .
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INTRODUCTION Wind energy is one of the most hopeful
renewable energy sources for water pumpingapplications for both direct and indirectcoupled with pump (via gear box transmission and electric devices) .
Irrigation generally involves farmers and/or localmanufacturers, it is not so critical to have amachine which can operate without any operator.
Windmills used for irrigation in the past tend tohave indigenous designs that are oftenimprovised or built by farmers as a method oflow-cost mechanization (Web-1, Web-2) .
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INTRODUCTION The centrifugal pump is a good load for a wind
turbine (Johnson, 2006) . One of the centrifugal pumpsthat could be coupled to VAWT is large-diameter slow-speed centrifugal pumps (Web-3) .
The uniqueness of this centrifugal pump is theshape of its impeller. The impeller is onlycomposed of two horizontal pipes installed on
a vertical hub pipe. Both outer ends of thehorizontal pipe have a pair of centred holesorifice (fixed and sliding orifice). Each of
sliding orifice is equipped with a pair of spring.
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INTRODUCTION
Specification (Web-3) : Diameter : 95 cm Suction head : 1.5 m Efficiency : 30 %
Output Capacity(maximum) : 100 m 3 per hour in a strongwind.
Produced by localmanufacturer
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INTRODUCTION
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METHODS Modification : removed moving parts and
replaced with double U pipe conficuration
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METHODS1. Electric Motor2. Long Arm Impeller pipes3. Double U Pipe4. Bearings5. Piped hub6. Housing7. Suction pipe8. Foot valve9. Water Feeder10. Pond
12
34 5 6
7
8910
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METHODS
ELECTRIC
MOTORPUMPBEARING
Pmotor Pin
Ploss
Pout
Energy Conversion Diagram
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RESULT
y = 0.0024x 1.6718 R = 0.9991
0
5
10
15
20
25
30
35
140 160 180 200 220 240 260 280 300
P l o s s
( W a t t )
Shaft speed (rpm)
Power losses (P loss) vs shaft speed
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RESULT
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
170 180 190 200 210 220 230 240 250 260
F l o w r a t e m 3 / h o u r
Shaft speed (rpm)
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Thank you .......
