power generating sprinkler

8/9/2019 Power Generating Sprinkler

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Department of Mechanical EngineeringA Seminar on

POWER GENERATING SMART

WATER SPRINKLER

Under the guidance ofProf. Balasubramanya

By : Aseem GauravAshik N.V.Ashutosh Kr. Singh

Avinash Appukuttan


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A turbine is a rotary engine thatextracts energy from a fluid flowand converts it into useful work.

In a reaction turbine, forcesdriving the rotor are achieved bythe reaction of an acceleratingwater flow in the runner while thepressure drops.

Due to the great variety of possible runner designs, reactionturbines can be used over a muchlarger range of heads and flowrates

INTRODUCTION


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SPRINKLER Irrigation sprinklers aresprinklers used onfarms, golf courses, andyards, to provide water

to vegetation and plantsin the event of drought.They may also be usedfor recreation, as acooling system, or tokeep down the amountof airborne dust.


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TYPES OF SPRINKLER

Industrial sprinklers : These sprinklers operate through electricand hydraulic technology and are grouped together in zones thatcan be collectively turned on and off by actuating a solenoid-

controlled valve.

Residential sprinklers: Home lawn sprinklers vary widely in theirsize, cost, and complexity. They include impactsprinklers, oscillating sprinklers, drip sprinklers, andunderground sprinkler systems

Underground sprinklers: Underground sprinklers functionthrough means of basic electronic and hydrolic technology. Thisvalve and all of the sprinklers that will be activated by this valveare known as a zone. Upon activation, the solenoid, which sits ontop of the valve is magnetized lifting a small stainless steelplunger in its center.


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SPRINKLER AS A REACTIONTURBINE

In a reaction water comes outat a high velocity from the rotorin a tangential direction. Theessential feature of the rotor isthat water enters at highpressure and this pressureenergy is transformed into

kinetic energy by a nozzlewhich is a part of the rotoritself.This is the principle followed ina sprinkler too.


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CONSTRUCTION

Sprinkler consists of:

1. Diffuser2. Pipe for water column3. Shaft4. Bearing5. Rotor6. Nozzle

7. Rim


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CONSTRUCTIONDiffuser: It is a device present at the water inlet to pump thewater up to the level where the rotor is present. This devicedue to its structure pushes the water with a pressure upwards

Pipe for Water column: The diffuser is connected to a GI pipecolumn, through which the pressurized water flows upwards.

Shaft : This column ends up into a stationary shaft. Shaft ismade out of nylon block keeping weight considerations in

mind.

Specification of bearing used:10mm bore28 mm outer diameter8 mm thickness.


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CONSTRUCTIONRotor: It is made up of PVC pipes as the torque required is more and to

run a motor the rotor speed should also be more. The length of the arms

is long so that torque is more, which would ease the rotation of the

motor.

Nozzle: Sprinkler works only when the water oozes out of the system at

high velocity. Thus two nozzles facing opposite to each other are fixed at

the end of the arms. This produces reaction forces and thus rotates the

sprinkler.

Rim : A small rim has been attached to the rotor part of the sprinkler,

such that, it rotates along with the sprinkler. This rim is coupled to

themotor and the pulley system.


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WORKING

POWER GENERATING SPRINKLER

The rotary motion of the sprinkler has been used togenerate power by coupling the sprinkler to a motor.This motor generates electricity when made to rotate.This electric current can be stored, amplified or useddirectly.


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SMART SPRINKLERThe total head of thesprinkler depends on thekinetic energy, potential

energy and pressure head ofthe system.

When the mass on the beltmoves from bottom to topthe head required to turn

the sprinkler increases ,reducing the coverage area,similarly when it moves fromthe top end to the bottom,the head required reducesthe sprinkling the water to

its maximum capacitycoverage area.


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SOLID EDGE DESIGN OF THE POWER

GENERATING SMART WATER SPRINKLER


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CALCULATIONSOutput power generated at the nozzle :Specification of motor :Voltage : 12VInput torque of the motor : 0.03NmAssuming 50% of the torque is used for generating power andthe res spinning the rim.We know that,Torque = Force * Radius (T= F*r)

Therefore, F= 0.015/0.12 radius of the rim= 12 cm= 0.125 NThis force at the rim is equal to the force at the nozzle of therotorTherefore,Torque at the nozzle = 0.125 * 0.20

= 0.025 Nm


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Since reaction forces occur a couple is formed

Thus angular velocity, due to couple, C is given byC= * rTherefore, = (0.025 / 0.2)* 3600

= 450 rpm

We know that,A 12v , 3W motor can produce 3000 rpmTherefore, at 450 rpm,The power generated is given by,(450* 3)/ 3000= 0.45WResult, the output power generated is 0.45W.


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APPLICATIONS1. Energy produced can be stored in a capacitor, battery

for later usage.2. Small amount of power generated can be used for

beatification.3. The power generated can be amplified and used for

various other purpose.4. The smart system helps sprinkler to cover more area

thus preventing continuous shifting of the sprinkler


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ADVANTAGES ANDDISADVANTAGES

It is cheap.An Alternate source of energy.Energy tapped can be used in for various purposes.Covers more area when kept at a place.

The disadvantage of the sprinkler is,

It requires a larger head of water at inlet to produceconsiderable amount of energy.


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THANK YOU !!!

power generating sprinkler

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