Examinando por Autor "Arboleda Otero, Mariana"
Mostrando 1 - 2 de 2
Resultados por página
Opciones de ordenación
Ítem Low-cost proportional automatic control valve(Universidad Eafit, 2020) Arboleda Otero, Mariana; Builes Toro, SantiagoControl and automation are the keys to escalate to industry 3.0, in a process the control valves are responsible for performing a corrective action in the process stream against a set point in the PID control loop, unfortunately its high cost does not allow the implementation of these equipment in academia and small industries. This project was based on the development of a functional prototype in hardware and software of a proportional valve for low-cost automatic control, coupling a conventional valve found in the market configured with microcontrollers, obtaining a low-cost device compared to those existing in the market that satisfy similar needs. The project was divided into four stages: i) mechanical coupling of the valve and the stepper motor, ii) electrical connection of the motor with the Arduino microcontroller, iii) programming the code to control the percentage of valve opening in direct relation with the number of steps of the motor, iv) transcription of the programming code to the Raspberry microcontroller to control the valve with the cell phone. A functional prototype with rapid response capacity was made and five buttons were set for the opening percentage of 0, 25, 50, 75, 100 %. In addition to this, it was possible to build a valve cell interface with a Raspberry microcontroller run through Google's mobile app, Home Assistant, to remotely control the valve.Ítem Proceso de ASC - INTEGRACION DE PLANTA A ESCALA DE LABORATORIO PARA LA CAPTURA DE CO2 POR ABSORCION-DESORCION CON AMINAS ACUOSAS(Universidad EAFIT, 2019) Román Restrepo, Valeria; Restrepo Lopera, Juan Pablo; Betancur Osorio, Camilo; Sepulveda García, Yessenia; Arboleda Otero, Mariana; Builes, Santiago; Universidad EAFITThe increasing use of fossil fuels for energy generation and the high emission of greenhouse gases associated with these processes have made it necessary to develop technologies that can mitigate their impact. The chemical absorption process of CO2 using aqueous amines has been implemented in the industry for several decades and is considered a viable strategy for medium-term CO2 emissions mitigation. Pumping highly viscous fluids such as amines requires large amounts of energy, and they are commonly mixed with water to improve their fluidity. This mixture negatively impacts reaction rates, resulting in the need for larger equipment to capture the same amounts of CO2. Additionally, the regeneration process of aqueous amines requires the supply of large amounts of energy to increase their temperature and release the CO2. These kinetic and energetic characteristics of the process are the main obstacles to the widespread implementation and extensive use of this technology in the industry. This work continues the construction process of a plant for chemical absorption using aqueous amines. It builds upon the construction of a gas capture plant that took place in 2018, aiming to operate in a steady state and monitor the performance of different types of amines, amine mixtures, and operational conditions of the system in order to find alternatives that can reduce the energy cost of the process.