Experimental investigations on the dynamic fluid behaviour in horizontal absorber tubes with direct solar steam generation

Eck, Markus; Geskes, Peter

doi:10.1051/jp4:1999320

Cited by 5 publications

(4 citation statements)

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“…Its phase and absolute value are then used for the online computation of K and T for every state of the processG s ð Þ, again with Eqs. (34) and (35).…”

Section: Adaptive Pi Controlmentioning

confidence: 96%

“…As it is mentioned in the work of Eck and Geskes [34], several models for the superheater were studied in the past, and it was found that the best model was a variant of the Marsik and Fortova model, in the form of transfer functions between the influence parameters.…”

Section: Superheater Modelingmentioning

confidence: 99%

“…The parameters a to f and T t are described in [34]. The transfer functions between other relevant parameters (mass flux, tem peratures and irradiance) are also described in this work.…”

Section: Superheater Modelingmentioning

confidence: 99%

“…For every state of the transfer functionG s ð Þ (that is to say for each frequency ω d ), the corresponding open loop point G 0 jω d ð Þ is computed using Eqs. (34) and (35), and the optimized values of K and T (previously obtained from the optimization procedure). All the state points G 0 jω d ð Þ are then plotted on the Nyquist diagram (knowing the phase and gain).…”

Section: Adaptive Pi Controlmentioning

confidence: 99%

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Control systems for direct steam generation in linear concentrating solar power plants – A review

Aurousseau

Vuillerme

Bézian

2016

Renewable and Sustainable Energy Reviews

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Concentrating Solar Power (CSP) plants generate renewable electricity using the conversion of solar direct normal irradiation into thermal energy, then into mechanical work and electricity through the use of a thermodynamic cycle. Among the several available technologies, Direct Steam Generation (DSG), in which steam is generated directly in the absorber tubes of the solar field, and then directly fed to the turbine or thermal storage, holds interesting advantages. However, the steam generation system shows a difficult dynamic behavior which constitutes a challenge for the control system design. It is mainly due to the conjunction of the natural transient condition of solar irradiation and the presence of two phase flow in the absorber tubes. This paper reviews the control methods of the DSG systems used in linefocus CSP. The control systems are either proposed in literature, or actually applied in currently running plants or prototypes, although an extensive description is difficult to obtain in the case of the latter. The control systems are classified according to which DSG operation mode they refer to.

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“…Its phase and absolute value are then used for the online computation of K and T for every state of the processG s ð Þ, again with Eqs. (34) and (35).…”

Section: Adaptive Pi Controlmentioning

confidence: 96%

Section: Superheater Modelingmentioning

confidence: 99%

“…The parameters a to f and T t are described in [34]. The transfer functions between other relevant parameters (mass flux, tem peratures and irradiance) are also described in this work.…”

Section: Superheater Modelingmentioning

confidence: 99%

Section: Adaptive Pi Controlmentioning

confidence: 99%

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