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Operating mode of a solar tower plant
Quelle: DLR
(1)
Special mirrors (heliostats) concentrate the solar radiation to the top of the solar tower
(2)
There a receiver is located which contains a heat transfer medium to absorb the radiation and to transfer it into heat. Appropriate heat transfer materials are gases (ambient air, CO2, steam), liquids (molten salt, water) or solid materials.
(3)
The hot material is transported further in a heat transfer media circuit to the next process step.
(4)
Before the actual usage, the hot material can be stored in a "Hot Storage". Depending on the material, it can be either expidient to store the heat in the hot material itself or to transfer the heat to a specific storage medium.
(5)
A steam generator transfers the heat from the heat transfer medium to the subsquent process step. If a direct integration into the heat process is possible, this heat transfer canbe omitted.
(6)
The heat can then be fed into an industrial thermal process or delilvered to a Gas- or Steamturbine to produce electricity.
(7)
The cooled heat transfer material is stored in the cold storage before it is transported back to the receiver.
(8)
An additional fossile burner can be integrated into the heat transer circle to ensure sufficient supply with heat or electricity at any time.
Links
Solarthermal Power Plant Juelich
CIEMAT's Plataforma Solar de Almería
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