Code
Specifications
DL WIND-B
WIND POWER TRAINER WITH WIND TUNNEL - didactic equipment
trainer for the theoretical and practical study of the generation of electricity by means of wind power.
It must be possible to change the flow of the air that reaches the wind turbine and to experiment and to experiment
its operation at no load and load conditions.
It must be composed of a wind tunnel with the following components : a single-phase industrial fan with electronic
speed regulator; a 12 V, 40 W wind turbine, with a mechanism for a change with respect to the source of the wind; an
anemometer; a voltmeter; an ammeter; a power supply, 0÷230 V, 4 A, with instruments for reading wind speed,
voltage and current, a potentiometer for controlling the fan simulating the wind and a lamp representing a resistive
load. Analogue output from each instrument: 0‐ 10 V; a variable resistive load.
Wind tunnel: used to study the trend of the flow of a fluid (typically air) around a body; the measurements taken shall
be: global and local speed, pressure, temperature and forces exerted by the fluid on the body. The simulations shall be
performed trying to reproduce some parameters such as Reynolds, Eulero, Froude, Cauchy and Mach numbers on
models in wind tunnels on which some phenomenon of relevant interest depend.
Motor and fan: the wind tunnel must t be supplied with a fan commanded by a motor. The motor must be coaxial to
the fan or external.
The fan or fans must be made up from one or a series of coaxial or flanked propellers; the fan must be positioned
downstream from the test chamber in an area with a high section in order to reduce the necessary power to supply.
This must also be put as far away as possible
from the entry to the test chamber according to the route that the fluid must take.
Honeycomb and flow laminator: composed of a series of tubes with small diameter (generally between 5 and 7 mm)
and measuring about 15 cm in length. These small tubes must be positioned coaxially to the pipe in which they are
found and shall be glued to each other to form mainly hexagonal structures.
Flow laminator: it must allow to compensate the lack of transversal uniformity of the flow that can be traced to the fan
vanes.
Aerogenerator: it must be mounted in the detection area of the wind tunnel.
It must have the following features:
Blade diameter = 510mm
Average output voltage = 12 V DC. (0-36V max.)
Minimum air speed = 3 m/s (10.8 Km/h).
Rated speed = 12 m/s (43.2 Km/h).
Average electric power = 40 W. (60W max.)
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Code
Specifications
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The aerogenerator must be installed on a mechanism that shall consent to change the position within the 0 - 30º range
with respect to the front of the flow of air, thus simulating the orientation of the vanes for aerodynamic purposes.
Anemometer: half-ball instrument to be applied to a metal support in order to detect wind speed at the sides of the
fan, aerogenerator outlets and at the fan. This instrument must supply electric voltage, whose value shall be directly
proportional to wind speed, applied to the digital instrument with scale in km/h positioned on the power supplier.
Output voltage: 0-5V dc.
In the aerogenerator support column there must be a safety fuse, which only shall intervene in the event of extreme
emergency, such as
serious malfunctioning of the generator itself.
The trainer must be provided also with a power supply and control 0÷230 V - 4 A,
that must include the following elements on the front panel :
Voltmeter
Ammeter
Speedometer
Bushes for external command of the inverter
Inverter
knob for manual fan command
Variable resistive load
Load light
Light switch
Analogue signals output bushes
Bush for earth connection of the fan motor
Fan motor power supply bush
And on the rear panel it shall include the following elements:
Switch
Power supply socket
With this trainer it must be possible to perform the following exercises:
Identification of the construction parts
Starting the training device
Definition of wind speed with external anemometer
Definition of the wind speed with internal anemometer
Detection of the aerogenerator voltage and current
Relationship of the aerogenerator with the wind front
Practical tests in open environment
Electrical connections shall be performed through 2 mm terminal and 4 mm safety connections.
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Specifications
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Dimensions: 1830 x 600 x 1350 mm.
Complete with operation/experiment manual concerning:
- Wind as energy resource
- Theory of wind turbines and control systems
- Elements of the wind turbines
- Types of wind turbines
- Measurement Systems of the Wind
- Wind generation systems.
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