128321713 02-03-2013 design and fabrication of solar seed sprayer ppt
TRANSCRIPT
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DESIGN AND FABRICATIONOF SOLAR SEED SPRAYER
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Introduction
For improving the productivity of ouragricultural lands it is stressed that they
must employ high technology in every
activity.
This involves the use of tractors, electrical
pumps and motors etc.
Hence if a manually operated solar speed
sprayer be designed it will prove but with avery high potential of growth.
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Objective
To extend the concept of Solar PV-Technology on Solar Sprayers as
Energy Alternate Devices.
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Problem Formulation
Fabrication of solar speed sprayer
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Work Plan
Conclusion
Results and Discussion
Fabrication of Solar Seed Sprayer
Connecting Wires
Adjusting Screw
Procrument of Raw Materials
Solar Panel Battery DC Pump
Problem Formulation
Aim & Objectives
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Methodology
To overcome the above difficulties in theExisting models and to reduce the
operating cost of the Power Sprayer, a
modified model has been designed andintroduced for effective operation without
fossil fuel. In this modified model the two
stroke petrol engine is replaced by asingle motor. This can be operated by
the electrical energy stored in the 12V
battery attached in the Unit. The 12V
battery can be charged by the Solar
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Specifications Of Motor
Weight of the motor 1kg (approx)
Operating Voltage 12V
Operating current 2.1 A
Flow 2.6 LPM
Motor Cost
Rs.700
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Specifications Of Battery
Weight of the battery 2 kg
Cost of the battery Rs.500600
Output power 86.4 watt
Operating voltage
12 V
Current 7.2 A
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Specifications of solar panel:
Panel Size 1 x 1
Cost of the Panel Rs.700 - Rs.1,000/-
Weight of the Panel 1kg
Voltage 15 volt
Current 5 A
Power 75 watt
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WORKING PRINCIPLE AND OPERATION
Solar radiation can be converted directly into electricity
using semiconductor devices, which are known as Photovoltaic(PV) cells. When Sunlight falls upon the Solar cell a part of the
light is absorbed and it is converted into Electrical Energy by
means of Electron Movements. This Solar Panel is connected to
12V lead acid battery for storing the electrical energy. A 12V DCmotor is connected to the lead acid battery to convert the
electrical energy into mechanical energy. Then the pesticide is
made to flow through the spray gun at 2.6 litres per minute.
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Battery Charger
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NEED OF SOLAR ENERGY
Developing countries in particular, facesituations of limited energy resources -especially provision of electricity in ruralareas.
There is an urgent need to address thisconstraint to the social and economicdevelopment of our country.
India faces a significant gap betweenelectricity demand and supply. Demand isincreasing at an alarming rate whencompared to supply.
According to leading Surveys, around 40
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SOLAR POWER
Solar energy is the utilization of theradiation energy from the sun.
When photons strike a photovoltaic cell,
they may be reflected, pass right through,or be absorbed.
When enough sunlight is absorbed by the
material, electrons are dislodged from thematerial's atoms.
When the two surfaces are connected
through an external load, electricity flows.
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TYPES OF SOLAR COLLECTORS
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Concentrating solar collectors This type of solar collector consists of parabolic mirrors
that concentrate the light onto a spot or a line, where the
heat is generated.
The parabolic mirrors work like a magnifying glass.These collectors are efficient and can be produce energy
at a very high temperature 300-5000C).
Flat plate solar collectors These collectors are generally used for water heating at
moderate temperatures.
They consist of a cover made of glass or plastic and an
absorber plate with attached water tubes to heat up
water.
TYPES OF SOLAR COLLECTORS
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Evacuated tube collectors The evacuated tube collector is a non-tracking solar collector.
It consists of two concentric tubes made of borosilicate glass.
It utilizes a vacuum between the tubes in order to eliminate
conductive and convective losses. Generally they perform very well even in cold and overcast
weather.
Uncovered absorbers Uncovered absorbers are black surfaces with incorporated
water tubes. They have no additional means of retaining
heat.
They are able to yield high efficiencies near ambient
temperature (20 400 degree C). The costs are very low,
so the pay-back time is short.
TYPES OF SOLAR COLLECTORS
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Solar ponds A solar pond is a basin of water where convection is
prevented. Water is used as an insulator and as a heat
radiation barrier. Convection is prevented by a salt gradient
or by layers of transparent plastic film. The solar pond hasthe advantage that it also stores the heat.
TYPES OF SOLAR COLLECTORS
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ADVANTAGES OF SOLAR ENERGY
Clean, renewable energy source
Solar systems are long lasting systems withwarranties that are 20-30 years
Virtually no maintenance and no recurringcosts
Ideal for remote locations that cannot be tied tothe grid
No noise or smells, solar operates totally silent
Reduce dependence on foreign oil
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DISADVANTAGES OF SOLAR
ENERGY
No electricity can be produced at
night, and reduced production on
cloudy/rainy days
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Results and Discussion
The device can be operated by a singleperson and an unskilled labour can
operated it.
Using this, a single person can sow seedsand cover an area of 6 hectares of land on
a songle day
Thus the design and fabrication of solar
seed sprayer has been done. Compared to manual spraying it takes only
less time and less effort.
Cost for fabricating this equipment is less