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8/10/2019 mme-577(1)
http://slidepdf.com/reader/full/mme-5771 1/2
Rol l No.
Total No.
of
Quest ions
08
Total
No. of
Pages
: 2
Time 3 Hrs.
M.Tech.
ME)
(Sem.-3 'd)
SOLAR
ENERGY
%
Subject
Code
: MME-577
:
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Paper
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narks
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INSTRUCTION
TO CANDIDATES :
'r*.'',,,,.'.Li::,,:,,iu,'u,."'-"""'
'1 , , , .
1 : : ;
1.
At tempt any
FIVE
quest ions
out
o f
EIGHT
queq"t lons.
2. Each
question
carry TWENTY m
arks.
' i
,,,,.
' t:1'
,,
c )
2 a )
l . a)
b)
How is
the
energycontinuously
e,ing
produced
n the
sun?
Define the follorving ermsand
differentiate etween
heir
meanings
(i)
Beam radiation a-ndidiffi;se
adiation
t" " ,t ' ,* ' ,
"t
t ' - ' , , ,
'
(ii)
Surface azimrnthlangle
nd soiar
azimuth angle
, ; '
,
.
i i t : ,1 | " '
(iii)
Loc2Il.cIoCk
ime
and losal
apparent
ime.
Discuss h6''variousypesof
solar
adiationmeasurement
nstruments.
: , ,
,
, ,
[5+6+9]
,,P,#
.
the
following
: i :
(i)
Declination ngle
(ii)
Hour
angle
(iii)
Loc al apparent
ime
(i.;)
Surface azimuth angle
(v)
Averagedaily
global
radiation
Discuss he
principle
of a solar
collector.
How can collector
coating
be
used o improve he
performance
f
a collector?
Discuss he
parameters
overning
he
perfbrmance
f
flat-plate ollectors.
[5+8+7]
b)
c)
rN-11-15361
8/10/2019 mme-577(1)
http://slidepdf.com/reader/full/mme-5771 2/2
3. a) Write
the
advantages
nd disadvantages
f concentrat ing
ol lectors
over
the flat-plate
ypes
of solarcollectors.
b) Write
notes
on the following
(i)
Number
of covers
(ii)
Brightness
oncentration
atio
;1,
(iii)
Selective
urface
(iv)
Intercept
actor.
''
',
*'r,'',"'*t
c) With
a
neat
sketchexplain
he working
of
paraboloidaf
.cbncentrating
a)
Describe
the various
parts
of any two vacudnnl ),#be
ollector
and
explain
how
they r,vork.
-
w
,#f.*
,.,'t''4.H.
4.
b) Describe
ith
necessary
iagrams nylt1ui6^.,'&eiH,
hermal
evices.
c) Discusshebasicprincipleof stor'iEr-gn,i?gyn reversible hemical
reactions.
What
are heir
main
advanta$'bs?
hat
do
you
understand
by
turning
temperature?
a,:''""1'i''
[6+6+8]
5 a)
Sketch
nd
explain
he
wor$ine,,of
yrheiometer
nd
sunshineecorder.
b) with
a neat
sketch
xplalnr,the"'process
f
drying ood
grains.
c)
Classify
nd
desclibg,
a,brief
he solar
aft heaters.
ketch
he various
solar
drier
designS':l{.,.
16+7
71
a)
With
a neat
sketch,bxplain
he
working
of solar
distillation
plant.
b) Describgl'vith
neat sketch
clifferentheating
arrangernents
or heating
of buildingswith solar enerry.
c)
Wilh
the
help
of schematic
iagramexplain
a
solar
passive-space
cor-.'"|ing.system
hrough
ventilation.
[6+8+6]
a) Explain
rvith
necessary
iagramshow
the
power
is
generated
i'om
'
suntight.
61
How
can
solar
energy
be converted
nto
electr ical
energy?
Give a
diagram
showing
he elements
f such
a
plant.
c)
Give
a neat
diagram
of a central
ower
receiver power
plant
and
explain
ts
operation.
Give
the details
of an
operational lant
if such a
plant existsanywhere n the world.
16+6+Rl
L v
v , v J
8.
a)
Discuss
he
difference
etween vaporative
ooling.
absorption ooling
and
passive
desiccant
ooling
methods,
sing
solar energy.
b) Draw
a
complete
ircuit diagram
of solar efrigeration
ystems. iscuss
its
economical
iability
in relation
o conventional
efrigeration
systems.
c)
Compare
the
relat ive
meri ts
and demerits
of
LiBr-water
and
aqua-ammonia
apour
absorption
ooling
system,
using
solar
energy.
[6+7
7]
6 .
7.
rN-11-15361
