Cosine loss effect is an important loss occurs in planed reflectors because they cannot be always aligned normally to sun flux direction Ĥ. It is the most efficient technology in CSP systems as it always supplies all the radiation to the receiver directly without the cosine loss effect which happens in other technologies. 4): consist of parabolic circular reflector reflects the solar radiation to a receiver placed in the center of the parabola, this type has a single reflector and single receiver only. What makes this type special is its simplicity and low capital cost for design and construction in comparison with other types ģ. Linear Fresnel Reflector (LFR): this type of reflectors consists of multi rectangular plane reflectors that concentrate the flux on a single or double receiver, see fig 3.

Parabolic trough reflectors were invented by the Swedish engineer John Ericsson in 1870 Ģ. Parabolic trough (fig 2): this type of CSP uses longitudinal sheets of reflectors with a parabolic cross to focus maximum radiation on the receiver which commonly made as a tube in such CSP types. All types of CSP works with the same principle ( reflector and receiver) depending on the solar radiation:Ībbildung in dieser Leseprobe nicht enthaltenġ. There are four main technologies for harvesting the concentrated solar power: parabolic trough, linear fresnel reflector (IFR), central receiver, and parabolic dish, see fig 1. In the 20 th century during the oil crises in the 1970s, the interest in solar energy began to increase to replace fossil fuel resources. Historically CSP technologies were used by ancient Greek and Chinese since they used mirrors or glasses to make fire. A newly growing use of CSP systems is for water desalination, it is used directly as a source of heat for the desalination process for the thermal desalination technologies or used undirectly as it provides the power for an individual facility that consumes part or total of its power for water desalination. Commonly this heat is used to generate electricity by using an electrical generator engaged to a steam or gas turbine powered by the heat of the targeted receiver, it also can be used as a power source for chemical production plants. Concentrated Solar Power and Desalination technologiesĬoncentrated solar power technology generates thermal power by using sunlight energy as single or multi reflectors supply the radiation to a receiver where the flux concentrated and the temperature rises to a useful level.

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