Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
CALCULUS OF OPTICAL LOSSES IN HELIOSTATS FOR CSP WITH LINEAR FRESNEL TECHNOLOGY
Submission Author:
Caio Barreto Vianna Martins , RN
Co-Authors:
Gabriel Ivan Medina Tapia
Presenter: Caio Barreto Vianna Martins
doi://10.26678/ABCM.ENCIT2016.CIT2016-0179
Abstract
In this work a study was elaborated to quantify the optical losses that exist in the tracking and energy concentration system from a CSP plant that uses linear Fresnel reflecting mirrors. The calculated losses were: blocking loss, shading loss, shading loss caused by the receiver, loss by cosine effect, spillage loss, loss due to material reflectivity, tracking system loss and loss due to maintenance. From the loss calculations made, a model was developed to analyze the efficiency of the reflectors of the system over a day, based on the optical performance calculated from the reflected Direct Normal Irradiance (DNI) onto the absorber. Additionally, a sensitivity analysis was performed to assess the influence of some system variables in the energy concentration and thereby choose the geometric parameters of the LRF system so that it produces as much power as possible. Thus, the optimized system was used to generate the simulation of the optical performance of the reflective mirrors in the city of Natal, Rio Grande do Norte. From the results, it is concluded that the developed model generates data close to reality and shows the great solar potential in Northeast region, based on climatic data from the analyzed city.
Keywords
Optical Losses, Heliostats, LFR, CSP, Optical Losses, Heliostats, LFR, CSP, Optical Losses, Heliostats, LFR, CSP, Optical Losses, Heliostats, LFR, CSP
