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Concentrated solar power (CSP) and photovoltaic (PV) solar systems can be hybridized, creating synergies: on one hand procuring dispatchability by storing thermal energy, and on the other hand generating electricity at a highly competitive prize. In this paper, we present an approach to the operation strategies and modes for integrated hybrid CSP + PV systems. We focus on parabolic trough (PT) solar plants, especially those operating in the south of Spain. Our study consists in the definition of suitable states for each of the subsystems that constitute a hybrid solar plant. We then propose modes from the combination of suitable states and establish the conditions for the transition between modes depending on the operation strategy. We propose two operation strategies: demand coverage and base load production. The results of this paper can be used in decision making for hybrid solar system simulation programs.
José López-Álvarez; Miguel Larrañeta; Elena Pérez-Aparicio; Manuel Silva-Pérez; Isidoro Lillo-Bravo. An Approach to the Operation Modes and Strategies for Integrated Hybrid Parabolic Trough and Photovoltaic Solar Systems. Sustainability 2021, 13, 4402 .
AMA StyleJosé López-Álvarez, Miguel Larrañeta, Elena Pérez-Aparicio, Manuel Silva-Pérez, Isidoro Lillo-Bravo. An Approach to the Operation Modes and Strategies for Integrated Hybrid Parabolic Trough and Photovoltaic Solar Systems. Sustainability. 2021; 13 (8):4402.
Chicago/Turabian StyleJosé López-Álvarez; Miguel Larrañeta; Elena Pérez-Aparicio; Manuel Silva-Pérez; Isidoro Lillo-Bravo. 2021. "An Approach to the Operation Modes and Strategies for Integrated Hybrid Parabolic Trough and Photovoltaic Solar Systems." Sustainability 13, no. 8: 4402.
In this paper, we focus on the variation of the transmittance of the receiver glass envelope as a function of the incidence angle and we measure its impact on the annual optical efficiency of a LFR plant using ray-tracing techniques. For this purpose, we draw up a detailed model of the LFR collector installed on the roof of the School of Engineering of the University of Seville, Spain. We also calculate the optical efficiency with and without a secondary reflector and with constant or variable transmittance receiver glass envelope properties. We run simulations using a clear-sky annual 1-min synthetic data set as input and calculate an average annual optical efficiency using efficiency matrices and Incidence Angle Modifiers (IAM) obtained from ray-tracing simulations. We find that the effect of the variation of the receiver glass envelope optical properties, as a function of the incidence angle, reduces the annual optical efficiency by 2.5%when the LFR plant has a basic secondary reflector and by 0.7% when there is no secondary reflector, according to the results obtained when using constant optical properties. We also evaluate the performance of the system with an optimised secondary reflector design.
José A. López-Alvarez; Miguel Larraneta; Manuel A. Silva-Pérez; Isidoro Lillo-Bravo. Impact of the variation of the receiver glass envelope transmittance as a function of the incidence angle in the performance of a linear Fresnel collector. Renewable Energy 2020, 150, 607 -615.
AMA StyleJosé A. López-Alvarez, Miguel Larraneta, Manuel A. Silva-Pérez, Isidoro Lillo-Bravo. Impact of the variation of the receiver glass envelope transmittance as a function of the incidence angle in the performance of a linear Fresnel collector. Renewable Energy. 2020; 150 ():607-615.
Chicago/Turabian StyleJosé A. López-Alvarez; Miguel Larraneta; Manuel A. Silva-Pérez; Isidoro Lillo-Bravo. 2020. "Impact of the variation of the receiver glass envelope transmittance as a function of the incidence angle in the performance of a linear Fresnel collector." Renewable Energy 150, no. : 607-615.