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International Journal of Ren2013; 2(3): 130-132Published online June 30, 2013 (http://wwdoi: 10.11"#$/!.i!rse.20130203.1$

Harvesting energy

Aashay Tinaikar

%ech&nic&l 'ngineering, id&*&rdhini+s

Email adress:h&rsh#0g&il.co(. in&i&r)

To cite this article:&sh& in&i&r. &r*esting 'nerg ro

pp. 4120-132. doi: 10.11"#$/!.i!rse.2013020

Abstract: he go&l o this pro!ect is

situ&ted in the regions, &ected b powpipeline sste, use o indi*idu&l s&l

energ o &lling w&ter. his pro!ect de

&lso highlights the &d*&nt&ges &nd the s

Keywords: enew&ble, Pie5oelectric

1. Introduction

7&st production de&nds &st utili

8ne such &!or resource is electricit

lieline or &ll the industri&l wor. isi&nd de*elopent o technolog h&s &

iper&ti*e in our d& to d& lie. hus

rise in power consuption in residenti

suice the growing power de&nds,

dependent on the e4tr&ction

non-con*ention&l, renew&ble sources o

his p&per ocuses l&rgel on the &

er&te to he&* r&in&ll. ol&r &nd wind

ors o renew&ble energ our &nin

p&rt ro these, high r&in&ll regi

the r&in to gener&te power on resident

could be considered &s & good &ltern&ti

in r&ining outdoor en*ironents where

icult to e4ploit 2hen these &teri&ls &re

tensile stress, &n electric ield

ri&l, cre&ting & *olt&ge dier-

w. his eect is due to the

it cell when & stress is &pplied.

ell cont&ins & s&ll positi*el

. >hen & stress is &pplied thisne direction which cre&tes &

se6uent electric ield. hese

erent ors. he ost co-

&lso ound &s pl&stics &nd ce-

etri rystals


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9ntern&tion&l Journ&l o enew&ble &nd ust&in&ble 'nerg 2013; 2(3): 130-132

131

he power gener&ted ro &bo*e ethods &re then

stored in stor&ge b&tteries. his power c&n be used during

suer when there &re l&rge power cuts.

2. Components and Desin

2.1. Turbines

7or utili5&tion o the potenti&l he&d o the &ccuul&ted

w&ter, the w&ter is ch&nneled through pipes &nd &de to

p&ss through turbine situ&ted &t the ground le*el. he dis-

ch&rge out ro the guiding pipe will be in the r&nge o

se*er&l liters/ in.

his is & low disch&rge condition &nd hence Pelton wheel

will result in higher eiciencies. 7or ulti-store buildings

@+ t&ll. he potenti&l energ o *olue 3o w&ter

&ccuul&ted will be e6u&l to

Potenti&l energA dBBg

>here, dA densit o r&in w&ter

gA &cceler&tion due to gr&*it (C.$1 /s2)

7or regions recei*ing he&* r&in&ll during onsoon o

&bout 100 per d&, the potenti&l energ &*&il&ble per

d& or the buildings with terr&ce &re& o 1002is

P.' &*&il&ble/d&AdB(0.1B100)BC.$1B

he &ccuul&ted w&ter is &de to p&ss through & no55le

on the turbine bl&des. he power gener&ted per d& with &n

o*er&ll eicienc o @no+ is

Power gener&ted/d&AnoBdB(0.1B100)BC.$1B

onsidering densit o w&terA1000g/3, e&d AD0

with noA0.E. he tot&l power output ro the turbine will

be PA3.# %J/ d&. hus power gener&ted in the entire r&in

se&son will be &bout 3#0%J or & building o D0 height

&nd roo &re& o 1002.

2.2. Piezoelectric Generators

his ethod &is &t utili5ing the inetic energ o the

&lling drop, to gener&te electricit.

cientists ro'/Feti-%in&tec, &n G= institute in Hrenoble, 7r&nce,

speci&li5ing in icroelectronics, h&*e recentl de*eloped &

sste th&t reco*ers the *ibr&tion energ ro & pie5oelec-

tric structure ip&cted b & &lling r&indrop #


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132 &sh& in&i&r: &r*esting 'nerg 7ro &in&ll

Table 1.&ariation in power generated for various drop sizes '()

Types o!

drop

Cable

dimen"

sion

#eco$era"

ble $oltae

#eco$era"

ble electric"

al enery

#eco$erable

instantane"

ous power

&in:

=: 1

:2.$/s

F:10c

>:3

:2Du

1." 1.EnJ 1.$u>

%ediu

=:2

:0.ED/s

F:10c

>:3

:2Du

3 DnJ 2.Du>

=own-

pour

=:D

:D.E/s

F:10c

>:1.3c

:2Du

C$ 2DuJ 12.D>

&sed on d&t& &*&il&ble, energ gener&ted or & sp&n o #

onths in & region h&*ing r&in&ll o 100 per d& will

be &ppro4i&tel 21." J per s6. o con*erter &re&. hus

or & con*erter &re& o 100 s6., the energ gener&ted will

be ne&rl 2.1"%J or the entire se&son.

2.3. Design of Rooftops

he iport&nt &ctor to be considered in ipleent&tion

o this pro!ect is the design o rootops. &in w&ter &ing

cont&ct with the roo tops will be used to gener&te electric-

it in &bo*e entioned two w&s.

Power gener&ted b the turbine is due to the low o w&-

ter &ccuul&ted on the rootops o buildings. 7or &4iu

power gener&tion, &!orit o the r&in w&ter ro the roo

top ust be ch&nneled down the pipe. 7or this, the roo

sur&ce ust be pro*ided with D-10 degrees o inclin&tion

with the hori5ont&l. lso, ultiple outlets ust be pro*ided

or l&rge terr&ces so th&t there is &4iu outlow o w&-

ter &nd iniu w&ter logging.

lso or &4iu power output ro pie5oelectric ge-

ner&tors, r&in drops need to strie the sur&ce e*er single

tie. >&ter &ccuul&tion results in pie5oelectric sensors

getting suberged thus rendering the useless. ence

proper inclin&tion o D-10 degrees ust be pro*ided.

%. &ene!its and Drawbacks

3.1. Benefits

1. his sste c&n be considered &n &ltern&ti*e to powersstes in r&in outdoor en*ironents where sol&r energ

is diicult to g&ther.

2. his is & cle&n source o energ with 5ero pollut&nt

eissions.

3. his energ gener&tion ethod is independent o tie

o the d&. 9t is ull unction&l during d& &s well &s night.

#. Kse o new renew&ble sources o electricit is the

need o the d& &nd &d*&nceent in pie5o sensor industr

will ipro*e the output c&p&cit.

3.2. Drawbacs

1. 'lectricit produced b these e&ns, &t present would

cost ore th&n electricit gener&ted ro ossil uels &t

their current costs.

2. he Pie5oelectric sensors &nd turbine th&t is needed to

be inst&lled &re costl coponents.

3. Power gener&ted is *er low or direct use. 7or eec-

ti*e utili5&tion in needed ties, the energ gener&ted ust

be stored in b&tteries which &lso incre&se the sste cost.

#. uch sste is onl oper&tion&l during r&in se&son.

hus the p&b&c period o this pl&n is 6uite l&rge.

'. Conclusion

he current power output o this pro!ect is *er less with

respect to the power consuption. he in*estent cost is

high &nd returns &re low, thus currentl it c&n+t be iple-

ented. Pie5oelectric technolog c&n &lso be used to

epower obile ob!ects lie c&rs &nd busses. onst&nt

rese&rch in the ield pie5oelectric &teri&ls &ssures the po-

tenti&l o this pro!ect.

#e!erences

1

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