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Knowledge models for the engineering and optimization of photobioreactors

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Fig. 10.1: Definition of the solid angle dω and of the associated intensity (strictly, radiance) I λ (x , y , z , Θ , Φ) from a fixed Cartesian r (x , y , z) or spherical r (r , θ , φ) frame of reference associated with a moving frame Ω (Θ , Φ) at a point
Fig. 10.2: Solar radiation on a microalgal cultivation system: incident angle and diffuse-direct radiations (left), time course of solar sky path during the year (right).
Fig. 10.3: Relation between light attenuation and photosynthetic growth in microalgal cultivation systems.
Fig. 10.4: Evolution of the thermodynamic efficiency η th of a rectangular photobioreactor illumi- illumi-nated on one side with a collimated radiation versus the incident PFD q 0
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