149-155
Theoretical and Experimental Investigation on a Single Basin Double Slope Solar Still
Authors: - IJETvenkatraman k., Anadhavelu k ,thiruvasamoorthy k
Number of views: 401
Solarstill,whichconvertsavailabl
e
impurewater
into
potablewater,canbeusedtosuppl
y
rforthepeopleliving
in
arid an
dr
But, thisstill isnot popular b
ec
lower
productivity. This re
se
presents the theoretica
l
performance ofthe single basi
n
solar still and exp
differentmethodstoimprovethe
ef
f
Asinglebasindoubleslopestillwit
h
f2.5m
1.5m
1m wasfabricate
d
under laboratory condition
s (
laboratory
)andinactualsolarradi
a
ns(
stil
l
chidambaram
(9
o
11’N,77
o
52’E)
,a
insouthernIndia.Experimentswe
r
o
r
depthsofwaterupto0.2cmandwit
h
basin
materials.
Differentwickmaterialslikelightc
o
eclothandlight
sponge
sheetwereused.Aluminiumrecta
n
ngedinlengthand
breadth
wisecoveredwithcottonclothandj
u
alsousedinth
e
solidmaterialslikequartziterocks
o
differentsizes,naturallywashed
st
o
cementconcretepiecesand,bric
k
ironturningswereusedin
the
basin.Theabovesaidsolidmateria
l
dso
far.
Experiments
wereconductedusingdifferentgl
as
th
differentinclinationandorie
n
variationsintransmittance
were
RESEARCH ARTICLE
International Journal of Engineering and Techniques
- Volume 2 Issue 2, Mar –
Apr 2016
http://www.ijetjournal.org
Theoretical and Experimental Investigation on a Single
Basin Double Slope Solar Still
an
k., Anadhavelu k ,thiruvasamoorthy k
Research Scholar
e
brackishor
y
drinkingwate
dr
emote areas.
ec
ause of its
se
arch work
l
and
actual
n
double slope
p
lores
the
f
iciency.
h
overallsizeo
d
and tested
s (
still
–
a
tionconditio
l
–solar
)at
,a
city
r
econducted
f
r
different
h
different
ottoncloth,jut
n
gularfinsarra
u
teclothwere
e
basin.
The
o
f
o
nes,
k
piecesand
l
swerenotuse
as
sthickness
wi
n
tationandthe
studied.Aregressionequationw
a
calculatethe
transmittance
ofthegiventhickness glasspla
t
andatanytimefor
given
radiation conditions. The va
r
losses at cover plates
were st
u
A new model is pr
op
theoretical analysis
by
c
transmittance variations ofth
e
and
radiation
received at th
e
input. In theearlier
w
transmittancewasconsidereda
n
e horizontalbasinarea
was
c
on
input. From thetheoretical ana
l
(
still
–
theoretical
)usingp
r
wasfoundthat,thestillproducti
o
increasingwiththedecreasein
depth.Inadditiontothestudyo
f
watertemperature,glasstemper
a
productionrate withlocaltime,
t
water – glass temperatur
e
local time
and
produc
ti
alsostudied.Atlowbasin w
a
below
60
o
C,water–
glasstemperaturedifferencewa
s
ionate
variation
with productionrate. A
t
temperature above 60
o
C,
behaviorwasdifferentandthe
productionratevariedinversely
w
temperature difference
.
different operation co
nd
productionratewas
Apr 2016
Page 149
Theoretical and Experimental Investigation on a Single
a
sestablished,to
t
e atanyplace
r
iationsofenergy
u
died.
op
osed for the
c
onsidering the
e
cover plates
e
glass cover as
w
ork,
constant
n
dradiationonth
on
sidered as
l
ysis of the still
r
oposedmodel,it
o
n
was
f
variations
of
a
tureand
t
he
variation
of
e
difference with
ti
on rate
were
a
tertemperature,
s
havingproport
t
higherwater
C,
the
still
w
ith
this
.
During this
nd
ition,
the
OPEN
ACCESS
International Journal of Engineering and Techniques
ISSN: 2395-1303
high.Thisdifferentoperationregi
o
ed
for
moredu
r
depthandhighersolar
intens
Theexperimentalresultso
f
laboratoryandstill–
comparedwithstill–
theoreticalwithproposedmodel,f
o
pths
anddifferentb
a
Theproductionrate,watertemper
a
temperatureandglass–
atmospherictemperaturedifferen
c
ere
similar. The stillwith 0.5
c
more productive.
F
laboratoryandstill–solar,from60
o
watertemperaturepointt
o
productionrate
point,thestilloperationwasdiffere
n
r–
glass
temperaturedifferenceisinversel
y
toproduction
rate.
From thecorrelation graph
f
rate,itwas
observe
d
higherwatertemperatures,the
productionratewascomplex
funct
i
water,glass,atmospheric
,
glasstemperaturedifferenceandg
l
atmospherictemperaturedifferen
c
proposedtheoretical
mode
l
theproduction ratewithhigher
d
actual. Hence,
to
predictthe
p
accurately,athermalmodel,whic
h
refinementoftheproposedmodel,
w
dand
validated