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Pr. Jose Ruelas

Department of Mechanical Engineering, Instituto Tecnológico Superior de Cajeme, Mexico


Talk Title
Design a Solar Tracker for Offset Solar Concentrator

Talk Abstract

The present work proposes and applied a design methodology for develops and instrumentation a solar tracking system in an Offset Solar concentrator. To realize this goal, first are proposed 4 steps about the process the instrumentation and 2 steps of control system. The offset solar concentrator is made with a satellite dish of 0.8 m of diameters. The result of applied this methodology is a solar tracker with operation manual and automatic of ±0.5° of accuracy and thermal energy efficiency of 25%. and is briefly mentions below;

Step 1: Process description: The result of this step is basically a paragraph describing in detail how the process is and generally, this
paragraph is provided by the engineers involved in the process or, if applicable, by the people requesting the instrumentation and control of a prototype. Step 2: Division of the process in sub processes: The result of this step is a list of the sub processes, where each of them is delimited by the specific operation, which will be delimited in each step of the project. Step 3: Instrumentation of sub processes: This stage consists of the selection of instruments, using for this a matrix of comparison for the different types of instruments, operating characteristics such as: speed, cost, installation, maintenance, spare parts, and availability. The "H" evaluation criterion is applied for high values, "M" for median values and "L" for low values. Step 4: Sensors and actuators distribution: Here we define the distribution schemes of the elements that form each module. At this stage it is necessary to list the sensors and actuators, as well as their main characteristics. In addition, these sensors or actuators must have a numbering according to the other modules, as well as their connection schemes according to the case. Step 5: Detailed description of the sequence of each sub process: The result of this step are paragraphs that will form the comments of the program, which narrates in detail what happens with events and actions in time, involving the labels of the sensors and actuators previously assigned in the previous step. Step 6: Programming the sub processes: Before programming the process, a flow diagram is developed with support of the detailed description of each sequence (Stage 5) and the programming of the modules that compose the system is continued, for this it is necessary to incorporate the programming language and the instructions according to the controller model and the language that is being use. Step 7: Prototype and Documentation: The prototype and documents that conform the proposal that allow implementing the control of the process and prototype are mention below: 1.- Technical specifications of sensors and instruments. 2.- Scheme of the distribution of sensors and actuators. 3.- Circuit connection diagram. 4.-Controller Program. 5.- Technical specifications of the components. 6.- Detailed description of processes. This proposes methodology can be applied for instrumentation and control different prototypes for research and developers.

Short Biography

Profesor of the Department of Mechanical Engineering, Instituto Tecnológico Superior de Cajeme: Ciudad Obregon, Sonora, MX , recent research publication Opto–geometric performance of fixed-focus solar concentrators Solar energy 2017 and Absorber design for a Scheffler-Type Solar Concentrator applied energy 2015, ORCID ID:

Talk Keywords
Design Methodology, Offset Solar Concentrator, Solar Tracker.
Target Audience
Stuents, academica, industry
Speaker-intro video

The International Conference on Innovative Applied Energy (IAPE’18)