Comparison of Different Types of Concentrating Collectors

Sr.
No

Point
of Comparison

Parabolic
Trough Collector

Parabolic
dish Collector

Fresnel
Collector

1.

Focusing Type

Line focusing

Point focusing

Line focusing

2.

Tracking system axis

Single axis

Two axis

Single axis

3.

Power capacity

50 to 280 MW

25 KW

5 TO 30 KW

4.

Working Temperature

Upto 400^o C

Upto 1000^oC

Upto 300^oC

5.

Efficiency

17 to 18 %

15 to 25%

11 to 30 %

6.

Concentration Ratio

70 to 80

500 -2000

25 -100

7.

Receiver Fluid

Water, Oil

Air, Water

Water