Dual feedback closed-loop control for one-axis solar trackers of parabolic trough collector systems

Saldivar-Aguilera, Tonathiu Q.; Diaz-Ponce, Arturo; Valentín-Coronado, Luis M.; Peña‐Cruz, Manuel I.; Acevedo-R., Gustavo A.

doi:10.1109/ropec53248.2021.9668095

Cited by 2 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A half-liter of water took 20 minutes to heat up to the point of starting to boil, and 193°C was the oil's highest measured temperature. Saldivar-Aguilera et al's [7] study implemented a single-axis solar tracking system's technique considering 10 m 2 parabolic trough collector. It integrated the signals of photodiodes solar with a shadow-based visual detection unit in order to minimize the tracking error.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of a Small-Scale Parabolic Trough Concentrated Solar Power ‎Systems

EHTİWESH

2023

Gazi University Journal of Science

View full text Add to dashboard Cite

Large-scale systems have a lower levelized cost of electricity than small-scale concentrated solar power systems. Thus, the purpose of the present study is to evaluate the potential of using standalone small-‎scale ‎concentrated ‎solar power collectors in order to generate process ‎heat ‎at ‎a ‎moderate ‎temperature, which directly utilizes thermal energy without the need to generate electricity. ‎A ‎parabolic trough ‎collector (3.6m2) ‎was ‎designed ‎and ‎manufactured, including a dual-axis solar tracking system with and without an insulating function. An ‎insulating ‎cavity ‎was incorporated to ‎minimize the heat ‎losses collected by the absorbed ‎tube. ‎The experiments ‎were ‎carried out during a time of high winds and unfavorable weather ‎in ‎Sabratha City. The findings of the experiments demonstrated that the produced temperature and the collected heat energy progressively increase until they reach their maximum value, and then gradually decrease. The maximum water ‎temperature ‎was 96ºC at ‎a ‎flow rate ‎of ‎‎0.5L/min, and ‎the highest amount of ‎heat energy was 550W/m². ‎Wind speed showed an important impact on the produced temperature; therefore, various comparative experiments were carried out in the same climate condition; ‎the experiment with the insulating function ‎presented the least heat loss, and it takes a higher edge of 11% in terms of efficiency. ‎In addition, the water temperature rose to 120°C where steam was generated at a zero flow rate, while the oil ‎reached 194ºC. In addition, a mathematical model was also implemented to theoretically study energy balance; with little expected discrepancy, its predictions and the experimental results agreed. In conclusion, the results presented reasonable markers of interest despite the poor environmental conditions during the experiments.‎

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of a Small-Scale Parabolic Trough Concentrated Solar Power ‎Systems

EHTİWESH

2023

Gazi University Journal of Science

View full text Add to dashboard Cite

show abstract

“…A PTC is a system that has a parabolic collector that concentrates solar radiation in a receiver located at the linear focus of the parabola [21]- [23]. This concentration allows for reaching temperatures ranging between 100 and 400 °C [24], [25], which is why they have been development and implemented in various applications such as pasteurization, cooking, washing, distillation, fluid heating, and boiler preheating, among others [26]- [30]. The main disadvantage of PTCs is that they can only concentrate Direct Normal Irradiation (DNI), so they necessarily require a Solar Tracking System (STS) on one axis to achieve automatic orientation solar rays towards the receptor during the day [31].…”

Section: Introductionmentioning

confidence: 99%

Design and Construction of a Solar Electric Plastic Extruder Machine Based on a Parabolic Trough Collector

Dena,

Díaz-Ponce,

Delgado-Flores

et al. 2023

IEEE Access

View full text Add to dashboard Cite

Plastics can be recycled by extrusion using an extruder machine that melts and transforms the material into a new product. This paper proposes the design, construction and thermal characterization of a horizontal extruder machine integrated with a parabolic trough concentrator with a one-axis solar tracking system, in which hybrid heating is performed by means of an arrangement of electrical resistances and by the concentration of direct normal irradiance. The optical simulation and the design of the proposed extruder are presented; as well as its integration with the parabolic trough concentrator. Experimental tests were performed in a real environment and the temperatures reached in three cases of heating by electrical resistance, solar radiation, and hybrid (electrical resistance plus solar radiation) were compared. The objective is to reach a temperature of 200 °C in the barrel, for which an analysis of the experimental thermal performance of the proposed extruder is presented. The heating by electrical resistances took from 77 to 95 min to reach 200 °C, while the hybrid system only took 25 to 57 min, reducing the times between 25.97 and 73.68% and, consequently, reducing the consumption of resistor current. In hybrid mode, at one point in the barrel, temperatures higher than 260 °C were reached, providing the possibility of instantly turning off some electrical resistances to save energy.

show abstract

Dual feedback closed-loop control for one-axis solar trackers of parabolic trough collector systems

Cited by 2 publications

References 12 publications

Experimental Investigation of a Small-Scale Parabolic Trough Concentrated Solar Power ‎Systems

Experimental Investigation of a Small-Scale Parabolic Trough Concentrated Solar Power ‎Systems

Design and Construction of a Solar Electric Plastic Extruder Machine Based on a Parabolic Trough Collector

Contact Info

Product

Resources

About