Windbooster is a vertical axis wind turbine fed by a conveyed stream designed to solve the drawbacks that limit the efficiency of traditional wind turbines with vertical axis. Windbooster is a wind turbine specially designed for “on-roof” installation.

1. THE WINDBOOSTER
PROJECT

2. The wind turbine
The function of a wind turbine is to steal energy to the intercepted air flow and convert it into
electricity.
WIND TURBINE
HORIZONTAL AXIS
WIND TURBINE
UPWIND
DOWNWIND
VERTICAL AXIS
WIND TURBINE
DARREIUS
SAVONIUS
GORLOW
DARREIUS - SAVONIUS
28/09/2013 The Windbooster project

3. The Windbooster technology (1/2)
INSTALLATION AT THE ITALIAN EMBASSY IN BRAZIL
28/09/2013 The Windbooster project

4. The Windbooster technology (2/2)
Windbooster is a vertical axis wind turbine
fed by a conveyed stream designed to solve
the drawbacks that limit the efficiency of
traditional wind turbines with vertical axis.
Windbooster is a wind turbine specially
designed for on-roof installation.
The rotating part of the machine (the so-
called rotor ) is completely contained within
a static conveyor . This characteristic
makes the product particularly suitable for
installations in urban environments: in case
of structural failure (remote event but
possible) the conveyor carries out the
function of a screen and avoids the ejection
of solid fragments potentially dangerous.
The conveyor also carries out the
important task of improve the quality of the
air flow which feeds the inner rotor: the
Windbooster is able to use more efficiently
the turbulent flows available in case of
installations in urban environments with an
overall size clearly lower than the
competitors with the same rated power.
28/09/2013 The Windbooster project

5. Windbooster 1.0: power curve
The wind turbine power curve describes, from power point of view, the real behavior of a wind
turbine with the change in wind speed (net of all aerodynamic, mechanical and electrical losses).
It is shown the mechanical and electrical power curve, power expressed in W (left y-axis). In addition
are shown efficiencies of devices that are integral part of the wind turbine electrical system (right y-
axis). The instantaneous speed of the wind is shown in x-axis.
28/09/2013 The Windbooster project

6. Status of the project
ü Intellectual property protection: it is in
the final stage the procedure for the
submission of the patent application.
ü Competitor analysis: it is on going a
market analysis of vertical axis wind
turbines with a rated power in the
range 300 W ÷ 3 kW. To date they are
been considered 19 wind turbines.
ü Characterization of the wind turbine: a
Windbooster 1.0 (rated power of 1 kW)
was installed in a test site. To date the
"track record" has a time extension
equal to 1 year.
28/09/2013 The Windbooster project

7. Comparison with competitors
The Windbooster 1.0 is compared with the selected wind turbines (competitor analysis) considering
the following efficiency parameters.
Parameter name Specific parameter Integral parameter
Power coefficient yes no
Annual Energy Production no yes
Specific Annual Energy Production yes yes
Annual Energy Production / cost no yes
An efficiency parameter is defined as specific if it takes into account the size of the wind turbine: it
allows to compare machines with different sizes, making the production of energy concerning to the
size of the wind turbine.
An efficiency parameter is defined as integral if it takes account of all possible operating conditions
that the wind turbine can experience: it looks at the overall performance of the wind turbine in a
certain time interval.
To make more meaningful the comparison with competitors, when it is made using a specific
parameter the comparison is extended to all selected wind turbines (rated power in the range 0.3 to
3 kW), while when the parameter is not specific , the comparison is limited to wind turbines with a
rated power similar to that of Windbooster 1.0 ( 1.5 kW).
28/09/2013 The Windbooster project

8. Windbooster 1.0: power coefficient
The power coefficient measures how much the wind turbine is efficient in subtract energy to the
feeding air flow: efficiency not only in terms of power subtracted but also in terms of space required.
It is shown a comparison between power coefficient average values: the average is performed on
power coefficient values developed in the range of wind speed values from 3 to 15 m/s. The
Windbooster 1.0 gets the better of all competitor turbines!
28/09/2013 The Windbooster project

9. Windbooster 1.0: Annual Energy Production
It is shown the Annual Energy Production (AEP), expressed in kWh, versus expected annual average
wind speed values. The Windbooster 1.0 (red curve) is particularly suitable for use in environmental
contexts characterized by medium/low wind speed values (less than 7.5 m / s).
28/09/2013 The Windbooster project

10. Windbooster 1.0: specific AEP (1/2)
It is shown the specific Annual Energy Production, expressed in kWh/m2, versus expected annual
average wind speed values. The Windboobster 1.0 (red curve) appears to be a turbine with an high
specific AEP: it overcomes all turbines with the same rated power and it competes against the bigger
wind turbines thanks to its smaller overall dimensions.
28/09/2013 The Windbooster project

11. Windbooster 1.0: specific AEP (2/2)
It is shown the specific Annual Energy Production, expressed in kWh/m2, versus expected annual
average wind speed values. The Windboobster 1.0 (red curve) appears to be a turbine with an high
specific AEP: it overcomes all turbines with the same rated power and it competes against the bigger
wind turbines thanks to its smaller overall dimensions.
28/09/2013 The Windbooster project

12. Windbooster 1.0: specific AEP % (1/2)
It is shown the specific Annual Energy Production, expressed in percentage of Windbooster 1.0
specific Annual Energy Production, versus expected annual average wind speed values. The red line
(Windbooster 1.0) separates turbines with higher specific AEP (ordinate> 100%) from those with a
lower specific AEP (ordinate <100%).
28/09/2013 The Windbooster project

13. Windbooster 1.0: specific AEP % (2/2)
It is shown the specific Annual Energy Production, expressed in percentage of Windbooster 1.0
specific Annual Energy Production, versus expected annual average wind speed values. The red line
(Windbooster 1.0) separates turbines with higher specific AEP (ordinate> 100%) from those with a
lower specific AEP (ordinate <100%).
28/09/2013 The Windbooster project

14. Windbooster 1.0: AEP/cost %
It is shown the AEP/cost ratio, expressed in percentage of Windbooster 1.0 AEP/cost ratio, versus
expected annual average wind speed values. The Windbooster 1.0 gets the better of all competitor
turbines with the same rated power.
28/09/2013 The Windbooster project

15. The Windbooster series: use the experience gained with the model
Windbooster 1.0 to develop a new range of products.
Windbooster project developments
ü Identify power classes more "attractive" for the market.
ü Develop a technical solution for a multi-turbine plant ("totem").
ü Develop a technical solution for a hybrid plant (solar + wind).
ü Identify an efficient and economical technical solution to equip the
Windbooster series with a storage system.
ü Improve the product aesthetics to make it more suitable for urban
installation.
28/09/2013 The Windbooster project

16. The Windbooster technology today: consumer profiles
ON-GRID SOLUTIONS
OFF-GRID SOLUTIONS
Solution
Windbooster
system
Inverter Dump load
Small (1 kW) 1.0 2 .7 kW 2 kW
Medium (2 kW) 2 x 1.0 3.0 kW 4 kW
Large (3 kW) 3 x 1.0 3.6 kW 6 kW
Solution
Windbooster
system
FV Storage
Basic (1 kW) 1.0 -
310 Ah
@48 V
Smart small (1+1 kW) 1.0 1 kW
310 Ah
@48 V
Smart medium (2+2 kW) 2 x 1.0 2 kW
520 Ah
@48 V
Smart large (3+3 kW) 3 x 1.0 3 kW
750 Ah
@48 V
28/09/2013 The Windbooster project

17. The Windbooster technology today: business profiles
ON-GRID SOLUTIONS
Solution
Windbooster
system
Feed-in tariff
[ /kWh]
MFIT12 4 x 3 kW 0.291
MFIT15 5 x 3 kW 0.291
28/09/2013 The Windbooster project

18. The Windbooster team
Andrea Scali
Entrepreneur
Partner and Chief Executive at Treecube Srl
Roberto Barontini
Full professor of Corporate Finance
Institute of Management
Scuola Superiore Sant Anna
(Financial area)
Luca Valenti
Mechanical engineer
Partner at Treecube Srl
Inventor and designer of Windbooster technology
(R&D)
Alessio Daziano
Electro-mechanical technician
(Production)
Federico Guidi
Aerospace engineer
(Engineering and product development)
Carlo Arcuri
Post Graduate Master Degree
Management and Innovation
(Sales and Marketing)
28/09/2013 The Windbooster project

19. Treecube S.r.l.
Headquarters
Via Ugo Foscolo, 25
19125, La Spezia
E-mail: info@treecube.it
Direct line: +39 3486604326
THANKS FOR YOU
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