CO2 Sequestration through Deep Saline Injection and ...

Figure 20
Parabolic Trough Collector [39]
The construction cost of a parabolic trough and its low ground coverage has been a major
problem with this type of collector. For large systems the collector assembly represents the
major cost. If a solar heating system is desired, these systems are capable of achieving 250-
300 o C [48].
3.5. LINEAR FRESNEL COLLECTOR
The linear Fresnel collector is a single axis tracking technology. This system consists of long,
flat plates that are arranged so that each reflects onto a single line positioned in space above the
field. At the common reflection point, there is a light transmitter or heat absorber. This is
pictured in Figure 21. Tracking is achieved by rotating of each linear reflector on an axis that is
parallel to the common reflection line as the sun moves throughout the day. This was a concept
that was developed by Giovanni Francia in the 1960s [49].
Figure 21
Linear Fresnel Reflector [50]
High densities can be attained by allowing the reflectors to change their focal point from one
receiver to another during the day in order to minimize shading and achieve a dense reflector
field. This arrangement is called the compact linear Fresnel reflector systems, or CLFR systems.
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