Simplified nonlinear rotational inertia model for the simulation and analysis of the characteristics of an unconventional VAWT type wind turbine with variable pitch

This paper shows a double multiple stream tube model coupling to a rotational inertia model. It allows the simulation and analysis of the characteristics of an unconventional vertical-axis wind turbine (VAWT) with Variable Pitch. This implementation permits to employ a stationary response of the wind turbine calculated across the main characteristics of output torque based on experimental aerodynamic coefficients and the Reynolds at each station, can be transformed into a transient response by a simplified non-linear rotational inertia dynamic model to predict the start-up, idle, stabilization and sudden stop of our device.

Design and construction of a prototype for the analysis of vibrations in an induction motor for the detection of faults

The contribution of this work is to present the design of a prototype integrated by an induction motor, a data acquisition system, accelerometers and control devices for stop and start, to generate and identify different types of faults by means of vibration analysis. in the domain: time, frequency or frequency-time, through the use of the Fourier Transform, Fast Fourier Transform or Wavelet Transforms (wavelet transform). In this prototype, failures can be generated in the induction motor such as: unbalance, different types of misalignment, mechanical looseness, and electrical failures such as broken bars or short-circuited rings, an example of a misalignment failure is presented to show the process of analysis and detection.

Design, construction and automation of an axial sieve, for use and management in the chemical plants laboratory of the UTSV

Objectives. The present project allows an axial sieve to be put into operation, whose purpose is to determine the efficiency in the grinding of solids, in the screening of particles of different sizes from Tyler sieves, whose purpose is to characterize solid raw materials, by dry method, applied to chemical engineering. Methodologic. This research work describes the design of the physical structure as a design based on a CAD environment, computer-aided design, as well as the electronic design and programming that is carried out to configure the time sequence that must be developed in the horizontal linear motion sieve, which is defined as a prototype that is functional to screen and characterize solid raw materials. Contribution. Acquiring a sieve for technical use is very expensive, its movements are shaky and noisy, in addition its control systems do not allow the user to modify variables such as time, that is why it is decided to innovate and start up an axial sieve from a mechanical system, with speed and timing control which will allow the user to regulate said variables in relation to the material to be sieved. With C + programming tools, use of LABVIEW software, ARDUINO. Uniting two areas, Chemical and Mechatronic engineering, of the UTSV

Design and development of an electronic card of radio control for adapt it to a system of irrigation conventional with activation of radio frequency

A radio control card was designed and developed to adapt to a conventional irrigation system with radio frequency activation for the State of Puebla, Mexico. In the design of the double-layer printed circuit board, the modules of decode of dual tone multi frequency and two of record and playing of audio were employed. The control functions were carried out with a microcontroller, the power stage was adapted using two triodes of alternating current to activate two contactors, in addition, three relays were placed; the first has the function of regulating the temperature, the second activates the radio transmitter and the third turns on the lighting in the cabinet, temperature control is carried out through a sensor. An electronic radio control card was obtained with the ability to connect to a radio transmitter to activate and deactivate loads of high demand for electrical energy at a distance of 2 linear km, allowing to reduce the times in the irrigation system and to confirm the audio messages on the mobile radio, the card is low cost compared to the market and its operation is simple.

Design of a single-acting ammonia-water solar absorption cooling system for food preservation

The increase in the use of non-renewable energy sources and the strong dependence of the energy sector on these sources, encourage the study of applications that use renewable energy sources. In this scenario, there has been an increase in the number of jobs related to refrigeration systems that use other sources of energy in addition to electricity, such as absorption cooling systems, which can produce a cooling effect using mainly heat. residual or other sources such as solar thermal energy. This article presents the design of a cooling system that will operate with solar energy, using the principle of absorption with the ammonia-water working torque in continuous function, to contribute to a cold production alternative in food preservation.

Evaluación técnica para un sistema de calentamiento de agua a través de tubos evacuados en la producción de sal de grano en el Municipio de Petatlán, Gro

The present work focuses on the technical evaluation of a water heating system for the production of salt grain in the coastal region of the municipality of Petatlán, Guerrero, with the purpose of increasing efficiency in the production process of said same product that is obtained by evaporating the water, taking advantage of the abundant available solar resource. For which a solar collector system is designed that through vacuum glass tubes the fluid is circulated at a low speed, increasing its temperature and accelerating the production process. The system is built using low cost materials and with sustainable criteria which is used in exploratory and field research where statistical data on solar radiation, volumetric flow of available salt water, temperature of the environment, among others have been compiled for later be analyzed and together determine the efficiency of the grain salt production process that will benefit the productive sector of the Costa Grande de Guerrero.

Una nueva topología de bajo costo para microinversores

In recent years, the implementation of solar energy facilities has grown, as it is considered an environmentally friendly way to produce electricity. Solar energy can be exploited under different configurations or connection schemes. The most useful connection schemes are the string connection, the power optimizers and the microinverters. Microinverters have a wide advantage compared to the other schemes due to their ability to take advantage of solar energy under different environmental conditions, such as partial shading, temperature and irradiation. The implementation of microinverters has been slowed down because of its high cost and reduced lifetime. In general, the design of microinverters commonly includes elements such as transistors, electrolytic capacitors, sensors and a microcontroller. Electrolytic capacitors are commonly used as decoupling stages, even though they present a lower lifetime due to high frequencies of operation and current rises. In this paper, a new microinverter topology is presented, it uses a low-cost array of multilayer capacitors to filter high frequencies and get a low-cost topology.

Aplicación de sistemas de refrigeración solar en zonas marginadas, organizaciones de bajos recursos y poblaciones desprotegidas

The refrigeration systems are of great importance in the daily life of the human being, due to the fact that it is necessary to have cold storage systems for different processes and perishable products preservation. The generated electric power as an alternative source has been used for refrigeration systems involved in sustainable development programs. The aims of this research were to characterize a cooling system powered by solar panels and that pretend to improve the quality of life. Refrigerating machines that use alternative sources of energy contribute to sustainable development, however, those that do not use it have a greater environmental impact. The solar refrigerator prototype has a quantitative-qualitative approach in deductive processes based on interpretation and data collection. This was carried out using own materials for the refrigerators construction that allow obtaining a compact configuration, presenting, pressure-volume operation curves and autonomy of the system with maintenance similar to conventional refrigeration systems. The refrigeration system is intended to be used in marginalized areas, low-income organizations and in support unprotected populations.

Diseño y desarrollo de un prototipo Checking – Fixture para componentes de la industria automotriz con un enfoque hacia la industria 4.0

The present work shows the design and the integration of several complements in a device at prototype level that carries out the tracking of the physical and dimensional characteristics for components of the automotive industry based on the new technological trends, as it is the industry 4.0. For this purpose, CAD design software such as Solidworks 2017 is used, the use of CAM systems with EdgeCam 2019 software as a manufacturing element, the vision system is used using the Matlab software and the Minitab 2017 statistical tool as an interface a device that helps to know the behavior of the parameters that are defined as critical in the production of automotive components and be able to carry out the necessary adjustments in the production parameters to reduce the variability in the process. Looking to have information in real time and make timely decisions. Generating the corresponding statistical control charts, with the aim of avoiding possible reworking or in the case of scrap generation.

Sistema de Monitoreo y Control Automatizado de Nivel para Contenedores de Líquidos no Corrosivos, de Uso Doméstico y Comercial

The automation of processes today is one of the present needs in society as a result of the inefficiency that results from carrying out certain tasks without mechanisms that optimize them, whether due to time, efficiency, and in general All the technological progress that we already have, these mechanisms have become obsolete. This document shows a response to this situation, specifically focused on liquid management processes, the implementation of a Level Automated Monitoring and Control System for non-corrosive containers for domestic and commercial use. The adequate selection of the components that make up this system will allow its easy accessibility, with respect to the cost that this implies, its structure will be designed in such a way that it minimizes the execution time, that integrates more than one control, and that its interface Be as friendly as possible with the operator. This allows it to be an easy-to-use system, greatly improving the response time in its realization, as well as it will allow to have a greater control in the capacity of the level of the containers reducing in this way the expenditure of liquids that can be arouse by some carelessness.