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VA TECH HYDRO

REPLACEMENT OF OLD CAMEL-BACK DOUBLE DISCHARGE FRANCIS UNITS through ECOBulbTM TECHNOLOGY : THE EXEMPLE OF TOMBETTA (ITALY) Pierre DUFLON & Stefano RIZZI Sales Managers VA TECH Hydro France & Italy www.vatech-hydro.com

sustainable solutions. for a better life.

HFR Pierre DUFLON, June 2006 - 1

VA TECH HYDRO

REPLACEMENT OF OLD CAMEL-BACK DOUBLE DISCHARGE FRANCIS UNITS through ECOBulbTM TECHNOLOGY : THE EXEMPLE OF TOMBETTA (ITALY) Pierre DUFLON & Stefano RIZZI Sales Manager VA TECH Hydro France & Italy sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 2


VA TECH HYDRO

sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 3

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 4

VA TECH HYDRO

sustainable solutions. for a better life.


VA TECH HYDRO

sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 5

VA TECH HYDRO Most of the Camel Back Double Francis units have the same technical features which are : • Built in the early 1900’s • High setting level • Low % of use of river flow • Lack of reliable civil drawings • Low Head; between 6 and 20 m • 1 to 4 MW per unit sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 6


VA TECH HYDRO

Concept ECOBulbTM Bulb unit : Ecological & Economical Axial unit with direct coupled generator ( no step-up gear ) Synchronous generator with permanent magnetic excitation Ecological unit without oil lubrication loop No external cooling system required Silent unit and maximum Integration in the site and landscape Reduction of the civil costs Output range between

500

and

5000

kW

and head range between

2

and

15

m

sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 7

VA TECH HYDRO

Limits of application of the ECOBulb unit Permanent Magnet constant excitation means : ²No direct regulation of the Power Factor ²No direct regulation of the Voltage ²Over Voltage proportional to the over speed ²No isolated operation possible The ECOBulb unit is adapted to the integration into an existing strong and stable electrical network, in Europe, North America, … sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 8


VA TECH HYDRO

Advantages of the ECOBulb unit 9 High Turbine efficiency 9 Very high Generator efficiency, at full and part load 9 No step-up Gear nor lubrication system 9 Very compact unit thanks to the complete integration of the Turbine and Generator The ECOBulb unit is the result of putting together the competences of VA TECH Hydro and ELIN for a Compact Hydro development www.vatech-hydro.com

sustainable solutions. for a better life.

VA TECH HYDRO

HFR Pierre DUFLON, June 2006 - 9

Units in operation

Aubas, Lot, France: Transformation of one asynchron unit into one runner regulated ECOBulb : 330 kW - 214 Rpm, unit in continuous operation since October 2002 without troubles . Extensive electrical tests performed on this unit Paullo, Milano, Italy: Two ECOBulb units, runner regulated : 1020 kW - 150 Rpm, units in operation since August 2004, next project started with 1 ECOBulb DR Sonoco, Ontario, Canada: Two ECOBulb units runner regulated : 4000 kW - 144 Rpm, in operation since september 2005 Tombetta, Verona, Italy: Four Vertical ECOBulb units double regulated : 1400 kW - 214 Rpm, in operation since end of 2005 Orders in progress Genivolta 2 (Italy) and Belgiardino (Italy) : Two ECOBulbs double regulated Santa Teresa & Villanova (Italy) : Four ECOBulbs identical to Paullo sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 10


VA TECH HYDRO

Refurbishment goals are multiple :

• Built in the early 1900’s • High setting level • Low % of use of river flow • Lack of reliable civil drawings • Low Head; between 6 and 20 m • 1 to 4 MW per unit

sustainable solutions. for a better life.

• Fit for the 21st century • Avoid cavitation • Increase % of use of river flow • Not weaken the existing civil structure • Low Head; cannot be changed drastically ! • Increase unit output • Optimize client investment

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 11

VA TECH HYDRO

Refurbishment options : • Camel-Back replacement : Cheap solution, no benefits • Open Flume Single Francis : Low benefits, cavitation limits • Axial propeller : Lack of flexibility, generator price • Vertical Kaplan : Civil impact • Vertical axial : Discharge limited by elbow draft tube • Pit : Step-up gear is a must due to pit size • Inverted Pit : Step-up gear and head losses due to the pit • StrafloTM : For large units, fixed blades • Bulb : For large units, size of the bulb • ECOBulbTM : No PF nor voltage regulation … sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 12


VA TECH HYDRO

sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 13

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 14

VA TECH HYDRO

sustainable solutions. for a better life.


VA TECH HYDRO

sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 15

VA TECH HYDRO Tombetta

sustainable solutions. for a better life.

Net head : Discharge :

www.vatech-hydro.com

10.5 4 x 15

m m3/s

HFR Pierre DUFLON, June 2006 - 16


VA TECH HYDRO Tombetta

sustainable solutions. for a better life.

Net head : Discharge per unit : Mech. output : Electrical output : Power Factor 100% :

10.5 15 1400 1450 0.95

m m3/s kW kVA Cap.

Runner diameter : 6 blades, Double regulated

1770

mm

Eta Turbine max.P : Eta Generator max.P : Eta Total max. :

92.0 % 97.2 % 89.4 % at 14 m3/s

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 17

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 18

VA TECH HYDRO

sustainable solutions. for a better life.


VA TECH HYDRO

sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 19

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 20

VA TECH HYDRO

sustainable solutions. for a better life.


VA TECH HYDRO

sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 21

VA TECH HYDRO ECOBulb of Tombetta Thank you for your attention

sustainable solutions. for a better life.

www.vatech-hydro.com

HFR Pierre DUFLON, June 2006 - 22


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