Dynamic model of a parabolic trough solar concentrator with a water displacement mechanism

2014 ◽  
Vol 63 ◽  
pp. 292-296 ◽  
Author(s):  
L. Salgado Conrado ◽  
J.A. Meda Campaña ◽  
C. Palacios Montufar
Keyword(s):  
Dynamic Model ◽  
Solar Concentrator ◽  
Parabolic Trough ◽  
Water Displacement ◽  
Displacement Mechanism

Sliding Mode Control of a Water-Displacement Based Mechanism Applied to the Orientation of a Parabolic-Trough Solar Concentrator

2017 ◽  
Vol 370 ◽  
pp. 90-97 ◽  
Author(s):  
Juan Alejandro Flores-Campos ◽  
J.A. Perrusquía Guzmán ◽  
Juan Alfonso Beltrán-Fernández ◽  
Luis Héctor Hernández-Gómez
Keyword(s):  
Sliding Mode ◽  
Sliding Mode Controller ◽  
Solar Concentrator ◽  
Water Pump ◽  
Parabolic Trough ◽  
Water Displacement ◽  
Small Water ◽  
Sun Sensor ◽  
Displacement Based ◽  
Opening And Closing

In this paper the problem of guiding a parabolic trough solar concentrator through a system based on a water displacement mechanism is addressed. The actuator mechanism consists of a set of four on/off electrovalves in ”H-bridge” configuration, a small water pump, a sun sensor and two containers half-filled with water, installed on the side ends of the concentrator. To guide and balance the concentrator, a sliding mode controller (SMC) to enable / disable the opening and closing of the valves that control the direction and flow of water between the two containers is proposed. The validity of the implementation of the proposed law of control applied to the actuator mechanism is verified with stability analysis and simulation results.

scholarly journals Small Organic Rankine Cycle Coupled to Parabolic Trough Solar Concentrator

2017 ◽  
Vol 129 ◽  
pp. 700-707 ◽  
Author(s):  
U. Caldiño-Herrera ◽  
Laura Castro ◽  
O.A. Jaramillo ◽  
J.C. Garcia ◽  
Gustavo Urquiza ◽  
...  
Keyword(s):  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Solar Concentrator ◽  
Parabolic Trough

Parabolic trough collector field dynamic model: Validation, energetic and exergetic analyses

2019 ◽  
Vol 148 ◽  
pp. 777-786 ◽  
Author(s):  
Jose A. Carballo ◽  
Javier Bonilla ◽  
Manuel Berenguel ◽  
Patricia Palenzuela
Keyword(s):  
Dynamic Model ◽  
Model Validation ◽  
Parabolic Trough ◽  
Parabolic Trough Collector ◽  
Field Dynamic

scholarly journals Distribution of Energy Density and Optimization on the Surface of the Receiver for Parabolic Trough Solar Concentrator

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Fei Chen ◽  
Ming Li ◽  
Peng Zhang
Keyword(s):  
Flux Density ◽  
Geometrical Structure ◽  
Focal Length ◽  
Radiant Flux ◽  
Solar Concentrator ◽  
Parabolic Trough ◽  
Charge Coupled Device ◽  
Length Width ◽  
Working Performance ◽  
Offset Effect

The geometrical optics model about the offset effect of solar rays by the thickness of concentrating mirror and the diametric solar model were established. The radiant flux density on the surface of the receiver for parabolic trough solar concentrator was obtained by numerical calculation with the established models. Charge-coupled device (CCD) was used for testing gray image on the surface of the receiver for parabolic trough solar concentrator. The image was analyzed by Matlab and the radiant flux density on the surface of the receiver for parabolic trough solar concentrator was achieved. It was found that the result of the theory is consistent with that of the experiment, and the relative deviation on the focal length width was 8.7%. The geometrical structure of receiver based on parabolic trough solar concentrator was optimized, a new parabolic receiver has been proposed, and it has been shown that the optimized geometrical structure of receiver was beneficial to improve the working performance of the entire system.

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