Operability, Reliability and Economic Benefits of CSP with Thermal Energy Storage: First Year of Operation of ANDASOL 3

Dinter, Frank; González, Daniel

doi:10.1016/j.egypro.2014.03.262

Cited by 60 publications

(24 citation statements)

References 1 publication

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“…Traditionally, qualified operators perform this procedure in a manual way attending to heuristic rules as the ones presented in Cirre (2007). First, when the global irradiance reaches values between 500-600 [W/m 2 ], normal range in which most solar thermal facilities are turned on (Dinter & Gonzalez, 2014;Kolb, 2011), pump 1 is started, and the fluid is recirculated only through the solar field (i.e. with valve 1 close to the solar field).…”

Section: Control Systemmentioning

confidence: 99%

“…These layouts mainly are (see Fig. 1 (a)-(d)): i) two-tank with indirect storage, as the ANDASOL 3 plant which is described in Dinter & Gonzalez (2014), ii) single-tank with indirect storage, as the facility analyzed in Kolb (2011) and most of the low concentration solar plants (Abid et al, 2018), iii) two-tank with direct storage, as the GEMASOLAR plant (Casella et al, 2014), and iv) single tank with direct storage as the ACUREX plant (Camacho & Gallego, 2013). It should be remarked that this last layout is also used in most of low concentration applications (Artur et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…For the case of two-tank with indirect storage, in Relloso & Delgado (2009) the operating modes for the day and night times of ANDASOL 1 plant were described. In the same way, the operation of the ANDASOL 3 plant was documented in Dinter & Gonzalez (2014), presenting several operating modes to maximize the economic benefits. In Biencinto et al (2014), different modes for charging and discharging the tanks were presented and analyzed using a simulation environment, and in Guédez et al (2015), an operating mode for minimizing the number of turbine starts was proposed.…”

Section: Introductionmentioning

confidence: 99%

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Hierarchical control for the start-up procedure of solar thermal fields with direct storage

Gil

Roca

Zaragoza

et al. 2020

Control Engineering Practice

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Thermal energy storage tanks are habitually combined with solar thermal fields to improve the dispatchability of these facilities. From the dynamical point of view, the start-up phase is relevant since if the storage device is unloaded in terms of energy or widely stratified, the transitory regime can take long time until reaching the operating point. In this paper, an optimal real-time procedure based on a hierarchical controller for improving the start-up phase is proposed. The hierarchical controller is composed of two layers based on a Model Predictive Control (MPC) technique and Proportional Integer Derivative (PID) controllers. Real experimental tests were performed in a pilot facility located at Plataforma Solar de Almería (Almería, Spain). In addition, a comparison in simulation with the typical manual procedure and with two techniques proposed previously in the literature for the same plant is provided. The results demonstrate the benefits obtained by using the proposed method; since it reduces the start-up phase in 34 [min] in comparison with the manual operation, and in 26 and 6 [min] with respect to the two previous techniques.

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Section: Control Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hierarchical control for the start-up procedure of solar thermal fields with direct storage

Gil

Roca

Zaragoza

et al. 2020

Control Engineering Practice

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“…On the economic aspect of PTC‐based plants, a simulation‐based optimization methodology was proposed to improve the thermoeconomic performance of a PTC‐based plant . The Andasol power station in Spain represents an example of a successful PTC‐based power plant that uses an indirect steam generation technique and has shown impressive operation and stability, demonstrated through the high efficiency and stable supply of electricity …”

Section: Introductionmentioning

confidence: 99%

Analysis of an innovative direct steam generation-based parabolic trough collector plant hybridized with a biomass boiler

2017

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Summary Direct steam generation (DSG) is the process by which steam is directly produced in parabolic trough fields and supplied to a power block. This process simplifies parabolic trough plants and improves cost effectiveness by increasing the permissible temperature of the working fluid. Similar to all solar‐based technologies, thermal energy storage is needed to overcome the intermittent nature of solar. In the present work, an innovative DSG‐based parabolic trough collector (PTC) plant hybridized with a biomass boiler is proposed and analyzed in detail. Two additional configurations comprising indirect steam generation PTC plants were also analyzed to compare their energy and exergy performance. To consider a wide range of operation, the share of biomass input to the hybridized system is varied. Energy and exergy analyses of DSG are conducted and compared with an existing indirect steam generation PTC power plants such as Andasol. The analyses are conducted on a 50 MW regenerative reheat Rankine cycle. The results obtained indicate that the proposed DSG‐based PTC plant is able to increase the overall system efficiency by 3% in comparison with indirect steam generation when linked to a biomass boiler that supplies 50% of the energy.

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“…The most common commercial liquid material is known as Solar Salt containing 60 wt% NaNO 3 and 40 wt% KNO 3 (Fernández and Grageda, 2015;Peiró et al, 2016). It is currently used in different CSP plants such as ANDASOL (Dintera and Gonzalez, 2014;Solar Millenium AG, 2008;Trabelsi et al, 2016), or GEMASOLAR (Rellosoa and García, 2015). Nitrate salts including Solar Salt have several advantages: (i) they are in liquid state at atmospheric pressure (and high temperature), which facilitates their use in CSP plants as TES material or heat transfer fluid (HTF); (ii) they have a working temperature range (282-386°C for ANDASOL plants (Dintera and Gonzalez, 2014;Trabelsi et al, 2016) which allows generating vapor for steam turbine; (iii) they are less toxic than organic oils (Fernández and Grageda, 2015).…”

Section: Introductionmentioning

confidence: 99%

Alkali polyphosphates as new potential materials for thermal energy storage

et al. 2017

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Until now, molten salts (nitrate-based salts) are the main materials for sensible heat storage at industrial scale. The working temperature range of these materials is limited below 500°C. There is not yet a solution for sensible heat storage at high temperature. This paper aimed to investigate alkali polyphosphates ((MPO 3) n , with M = Li, Na or K) as new promising materials for sensible heat storage at high temperature. Alkali polyphosphates could be formed by dehydration of monoalkali dihydrogenphosphates (MH 2 PO 4 , with M = Li, Na or K), which occurs below 400°C. Alkali polyphosphates resulted from this dehydration melted at 628, 657 and 812°C for sodium, lithium and potassium polyphosphate, respectively. All these liquids evaporated above 900°C but no destruction of their chemical structure was recorded. Sodium polyphosphate seemed to be the most promising material for sensible heat storage at high temperature because of its large potential working temperature (628-900°C), its availability and its low cost compared to lithium and potassium polyphosphates. The results open new prospects for the development of the thermal energy storage field.

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Operability, Reliability and Economic Benefits of CSP with Thermal Energy Storage: First Year of Operation of ANDASOL 3

Cited by 60 publications

References 1 publication

Hierarchical control for the start-up procedure of solar thermal fields with direct storage

Hierarchical control for the start-up procedure of solar thermal fields with direct storage

Analysis of an innovative direct steam generation-based parabolic trough collector plant hybridized with a biomass boiler

Alkali polyphosphates as new potential materials for thermal energy storage

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