Article
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
Author/s | López Álvarez, José Antonio
Larrañeta, Miguel Silva Pérez, Manuel Antonio Lillo Bravo, Isidoro |
Department | Universidad de Sevilla. Departamento de Ingeniería Energética |
Publication Date | 2020-05 |
Deposit Date | 2024-09-25 |
Published in |
|
Abstract | 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 ... 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. |
Citation | López-Álvarez, J.A., Larrañeta, M., Silva-Pérez, M.A. y Lillo-Bravo, I. (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, 607-615. https://doi.org/10.1016/j.renene.2020.01.016. |
Files | Size | Format | View | Description |
---|---|---|---|---|
RE_2020_Larrañeta_Impact_postp ... | 1.716Mb | [PDF] | View/ | Versión aceptada |