INVELOX is a wind delivery system suitable
for wind power harnessing. One of its innovative features is its capability of
incorporating multiple wind turbine generator system in the venturi section.
Its first innovative feature is the elimination of tower mounted turbine.
Secondly, INVELOX captures wind flow through an omnidirectional intake or
multi-unidirectional intakes and thereby there is no need for a passive and
active yaw control to orient the wind turbine. Third, it accelerates the flow
within a shrouded venturi section which is subsequently expanded and release
into the ambient environment through a diffuser. When two or three turbines are
in the venturi section, the wind power harnessed by second and third turbine is
lesser than the first turbine power conservation.
It is a new concept
of wind harnessing which overcomes every drawback of traditional turbine and
provide power output with reduced cost. Its peculiarity is that it eliminates
the tower loading turbines. Today standardization of wind energy generation is hoisting
the turbines with massive blades top on the tower. But as economic perspective
they are not affordable also unsuitable causing harm to people and wildlife.
Considering INVELOX on the other hand captures the wind Omni-directionally and
funnel it to the ground level where impact of the high velocity wind on the
turbine causes energy generation. And thereby INVELOX has proven to be a
solution of all the problems arises due to the traditional windmills like low
turbine reliability, downtime issues adverse environmental impact. the overall
objective of this work is to model and to understand actual fluid flow inside
the INVELOX where the wind turbines are situated. Various computations are
carried out to check the relation between wind direction and inside geometry of
system and now the study shows it is possible to capture, accelerate and
concentrate to obtain higher power output. And hence INVELOX is better way of
harnessing wind energy any time any were.
II.LITERATURE REVIEW
Utilizing the wind energy for the wind energy
for various application is an ancient concept. Initially wind energy was used
for sailing boats, circulating the outside air in the houses for cooling
purpose, agricultural purposes for cleaning harvested grains.
Innovation has helped in
building massive devices for harnessing this wind energy, and better example of
it is INVELOX. Till now we all are familiar of traditional wind turbines but we
are unaware of its drawbacks. But INVELOX technology had succeeded in
overcoming all the drawbacks of this traditional wind mills and is promising a
better energy generation.
· This
do not require site selection unlike in case of traditional wind. This INVELOX
system can be retrofitted to residential buildings and factories.
· INVELOX [9] can be
installed in the sites which are not suitable for traditional wind mills.
· It can be very helpful
in militaries, since there are now sources of energy.
· With
proper planning this technology can also serve the purpose of ventilation in
the places where there is scarcity of ventilation.
· Irrespective
of velocity of wind this technology can be installed in places with low
velocity (2 m/s) to extremely high velocity like in typhoon conditions too.
· We
are living in the era where meeting the energy need is the most crucial factor
to be considered, but along with this we should also be concern of the
maintaining the eco-friendly relations with the environment.
· Unlike
traditional wind energy generation INVELOX does not cause any harm to the
birds, biodiversity, wildlife.
· As
compared to traditional wind mills the INVELOX [10] produce 5-6 times of energy
acquiring the same amount of area.
· Traditional
wind turbines have tendency to produce electromagnetic radiations which causes
harm to the electronic devices. Gadgets like cellphones, televisions, etc.
cannot be used in this areas.
III.CFD (COMPUTATIONAL
FLUID DYNAMICS) ANALYSIS
From literature review it is concluded that CFD
test conducted on INVELOX system using ANSYS. The speed ratio is important
design factor to be considered at the time of designing. From this result [6]
it is concluded that the speed ratio is almost twice, speed ratio is the ratio
of the velocity of wind at venturi section to the free stream velocity at
inlet. The dimensions considered during the CFD analysis in ANSYS was 1.8 m
diameter of the venturi section, height of 18m which is considered from the
center of the inlet to the ground level. The result obtained showed that the
inlet free stream velocity of the wind was 6 m/s and the velocity at the
venturi was 12m/s. All this analysis shown in the figure (1.a) given below.
IV.CONCLUSION
Form this literature
study it is concluded that wind is captured omni directionally and then
funneled to get high power output [8]. It is also known that this technology
can replace traditional wind mill in upcoming era. After going through all
research paper it is known that power output is increased by increasing the
mass flow rate or total energy drop across the turbine.
From the study of the
research papers it is concluded that power obtained through Invelox systems is
5-6 times more than that power obtained by traditional wind mills with respect
to size. Also there are no adverse impact on the environment. Hence there is no
harm to the locality. There is no sound pollution caused due to Invelox unlike
traditional wind mills.
Besides of having all the
advantages it has one drawback, i.e. its cost increases with respect to its
capacity. After studying this we came up with an idea of making further
inventions in this system.
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