WorksheetsSolar collectors
Total questions: 15
Worksheet time: 15mins
In flat plate type solar collector
Collector area is equal to absorber area
Collector area is not equal to absorber area
Collector area is greater than absorber area
Collector area is less than absorber area
What is the other name of non concentrating type collector ?
Flat plate type collector
Concentrating type collector
Ring type collector
None of the above
Flat plate type solar collector collects
only direct radiation
only diffuse radiation
both direct and diffuse radiation
None of the above
Flat plate collectors are used for temperature range of
below 90 degree celsius
above 90 degree celsius
below 60 degree celsius
below 45 degree celsius
What is the area of flat plate type collector ?
2.9 to 3.9 sq.m
1.7 to 2.9 sq.m
2.7 to 2.9 sq.m
1.7 to 6.6 sq.m
Pick the parts of flat plate type collector
Transparent cover
Insulation
Absorber
All the above
What material is used for transparent cover?
steel
copper
Glass
Wood
Transparent cover is transparent to infrared re-radiation from the absorber
True
False
What is the thickness of transparent cover ?
31 to 41 mm
30 to 40 mm
3 to 4 mm
13 to 14 mm
Each plate reflects about 25 % of incoming sunlight
True
False
Reflection in transparent cover may be reduced
coating with thin film of zinc
coating with thin film of magnesium
coating with thin film of magnesium fluoride
None of the above
Collector tubes are made of
plastic
Copper
wood
None of the above
What is the range of pitch of collector tubes?
15 to 25 cm
5 to 15 cm
25 to 35 cm
45 to 65 cm
What is added with water to avoid freezing ?
Methylene glycol
Ethylene glycol
Phenol
None of the above
What are the drawbacks of using water as heat transport medium ?
(a)
