1

ME7G3

SeventhSemesterB.E.DegreeExamination,Dec.0TlJan.08Non Gonventional EnergY Sources

Max. Marks:100

: 3 hrs.Note z l. Answer ony FIVE full questions'

2. Missing ii' it ""i *oy t' suitably assumed'

Namethemajornon-conventionalenergyresourcesavailableinlndiaandexplainwherethey are best suited in facing energy.needs'

(10 Marks)

With a neat sketch explain the working oi u pyrheliometer' (10 Marks)

With figures exPlain the following :

iii) Solar constant(10 Marks)i) Beam radiation ii) Diffuse radiation

iv) Local solar time v) Air mass

Olt..rin. the local solar time and declination

lio lo' E at l2.30lST on June 19' Equation(10 Marks)

lo#ro",t*.'[,u*de is to be taken as 820 30''

at a location latitude 230 15'N longitude

of time correction from chart is - (1'01"'

. With neat sketches explain the following :

i) solar pondr'o "^t' ii) Solar power generation

iii) Solar desalination system . *)'Sotur cooke''' .,rr,r. merits.

(16 Marks)

r. Name any three ph.;;]i;ic materials u,ia.*pr*n their relative merits' (04 Marks)

r. calculate solar altitude angle, incident angle and collector efficiency of a flat plate

collector ro.u,.a"ui fi"t*o? "i I 1o;0' N on March 22 at' 14'30 - 15'30 LST for a flat

ptate collecro, r..ii ;td';;;;'. ih.;;.;tge intensitv of solar radiation is to be taken as

560 w/m,. rh..Jri#;* ;; ;i;;.o".;s with transmittance 0 !8r_lhe absorptance of

plate is o.gl uri i;;;"r, g,!ri*i*,-u, ro' to,ttiol it .'ss wj*,0c' rhe heat

removal factor of the coirector i, o.g2 ura the corector fluid temperature is 750 c' Take

ambient,.*p.rn*";;;qt "" *

, ^ ^--roi- thoir neea and t (15 Marks)

b.Auxiliaryheatingsystemforsolarwaterheaters_explaintheirneedandtheirlillil:lffj

5 State the influence of the following on liquid flat plate collectors performance :

a. Insulation materials (any two is enough)

b. Collector tilt;. Couting, on absorber plate (any two is enough)

d. Water circulation systlm (any irvo systems enough)

e. Diffuse radiation'

a. State the merits and demerits of wind and tidal energy'

b. write aneat kJ;il"f th. wind turbine and explain their function.

a. Draw a neat sketch of a bio gas plant and explain its working'

b. With a neat sketch explain t[e layout of an OTEC power station'

c. Explain the proJuction of biogas by anaerobic fermentation and the

its Production'

a. Explain in detail any two methods of producing hydrogen'

; . ;;;1. th. m etho d s ro:':T' r*"*:, *i::'l1,:lY#".'-T-in the

(20 Marks)

(10 Marks)

(10 Marks)

(06 Marks)

(06 Marks)

factors that influence(08 Marks)

(10 Marks)

(05 Marks)

problems faced bY these