Engineering, Chemical Engineering, Control and Systems Engineering, Mechanical Engineering
23
Scopus Publications
Scopus Publications
Device for Direct Barocaloric Measurement Marcelo Augusto Yanes Moia, Flavio Clareth Colman, Gustavo Hannoun Giudai, William Imamura, Erik Oda Usuda, Gabriel Fornazaro, Laís Weber Aguiar, Wagner André dos Santos Conceição, Monica Ronobo Coutinho, Silvia Luciana Favaro, Cleber Santiago Alves, Alexandre Magnus Gomes Carvalho, Paulo Vinicius Trevizoli, Jader Riso Barbosa Junior, Rita de Cássia Colman Simões, Eduardo Radovanovic, Jean Rodrigo Bocca International Journal of Thermophysics, 2025
Analysis of the effects of recycling on process control Cássio R.A. Silva, Victor C. Panuci, Monica R. Coutinho, Wagner A.S. Conceição, Cid M.G. Andrade Polish Journal of Chemical Technology, 2023 The union of different devices in order to obtain a specific response for a process is commonly called a control system. For a control system, it is necessary to have one or more controllers. Among the most used in the industrial sector are the PID and PI controllers. Next to these controllers is the control software. Scilab is a good example of control software. It is characterized as free code software, with no cost for its acquisition, in addition to having a large computational power and integrated tools, such as Xcos, intended for modeling and simulation. For the union with Scilab, there is Arduino. Such a mixture can be used, for example, to control liquid levels in tanks. In this context, the present work aims to study the tank-level control system based on PID and PI controllers through the union between Scilab and Arduino. Phenomenological models were developed based on closed-loop control (feedback control system) of the process with two tanks not coupled with recycle. Furthermore, for comparison purposes, two approaches were used for each process: one considering the saturation of the manipulated variable and the other without the presence of such saturation. At first, there was a need to implement an anti-windup system. For tuning the controller parameters, the ISE method was used, executed through a programming code developed in Scilab. The parameters found for the two systems were tested on a made-up experimental bench. Therefore, using the block diagrams and the method here called “ISE method”, satisfactory values were obtained for the control parameters. These were ratified in the tests carried out in the experimental module. Level control was achieved with greater prominence for the PI controller since there is one less parameter to be tuned and processed by the system. This controller provided results close to the PID controller for cycles up to 50%. In general, the PI controller showed maximum response deviations smaller than the PID, such as deviations of 1.55 cm and 2.40 cm, respectively, for the case with 75% recycle. It was also clear the influence of the saturation of the manipulated variable on the system response, but not on the tuning of the controller parameters.
Giant barocaloric effect in commercial polyurethane Jean Rodrigo Bocca, Silvia L. Favaro, Cleber S. Alves, Alexandre M.G. Carvalho, Jader R. Barbosa, Andressa dos Santos, Flávio C. Colman, Wagner A. dos S. Conceição, Christian Caglioni, Eduardo Radovanovic Polymer Testing, 2021 Barocaloric effect in polymers is barely recognized and limited to a few reports in the literature. This effect consists of a thermal response of the material when a hydrostatic pressure is applied, allowing its application in the field of solid-state cooling. In this study, the barocaloric effect was investigated for a commercial polyurethane rubber (PU) subjected to three heat treatment temperatures (60, 100, and 115 °C) for 16 h to assess the limiting condition for this application. PU presents giant barocaloric effect, reaching adiabatic temperature change between 13 and 15 °C at a maximum pressure variation of 218 MPa, obtained under direct measurement, reaching a normalized refrigerant capacity of 11.07 kJ kg−1 GPa−1 (ΔTh-c = 25 °C, Δp = 174 MPa). Using the obtained data, it was possible to propose a quadratic model to predict the value of the adiabatic temperature variation as a function of the temperature and pressure applied in the PU. The PU characterization included differential scanning calorimetry and mechanical properties. The results obtained indicate a promising research field for the barocaloric effect in rubber polyurethanes.
Mechanical and magnetocaloric properties the composite based on PMMA and Gd-Ge-Si as reinforcement Felipe Mello Rigon, Andressa dos Santos, Jean Halison de Oliveira, Laís Weber Aguiar, Wagner André dos Santos Conceição, Paulo Vinicius Trevizoli, Silvia Luciana Favaro, Cleber Santiago Alves Materials Research, 2021 This research work investigates a new type of polymer-based magnetocaloric composite. Using PMMA as polymeric matrix and the magnetocaloric material Gd5.09Ge2.03Si1.88 as reinforcement,no influence of the presence of polymer on the magnetic properties of Gd5.09Ge2.03Si1.88 were observed. Three types of composites with different PMMA content were fabricated by mixing the components and curing the composite. The composites were evaluated by their mechanical, physicochemical and morphological properties.The proposed PMMA composite MC10 presented the smallest elastic modulus but highest Vickers hardness (6.61 ± 0.08 GPa and 22.10 ± 1.29 HV, respectively). The composites showed asatisfactorymagnetocaloriceffect (MCE)“peak” of -7 J/kgK. With the results, this composite can be a potential candidate for applications as Active Magnetic Regenerator in magnetic heat pumps.
Thermal comfort monitoring in aviaries by a real-time data acquisition system Tiago F. B. Camargo, Robson L. Silva, Márcio Higa, Mônica R. Coutinho, Júlio C. D. de Oliveira, Wagner A. dos S. Conceição Revista Brasileira De Engenharia Agricola E Ambiental, 2019 Thermal comfort inside broiler husbandry facilities is essential in obtaining good results in the production activity. Assessment of adequate thermodynamic conditions requires measurement and control, usually implying costs and specialized maintenance. The objective of this research was to monitor the temperature, relative humidity and air speed distributions by a developed low-cost, open-source and easy-to-use measurement system, using Arduino (hardware) and Scilab (software) for real-time data acquisition. Sensors were installed in a real facility (Cianorte, PR), with measurements for internal ambient (20 sensors for temperature/relative humidity, and two sensors for differential pressure, respectively 0.5 and 1.5 m high) and external ambient (pressure and wind speed, 1.5 m high). Data acquisition system has enabled communication with sensors which are easily read by the computer and stored in a data file. The developed data acquisition system proved to be efficient when applied in a commercial broiler husbandry facility, enabling real-time monitoring for thermal comfort parameters.
A simple method to estimate the thermal diffusivity of foods João Mari, Marcus Mari, Maykon Ferreira, Wagner Conceição, Cid Andrade Journal of Food Process Engineering, 2018 This work shows an alternative method to determine the thermal diffusivity of wheat flour and cassava, by means of experiments. It was considered as a model for analysis a semi‐infinite solid, represented by an aluminum container filled with flour, an incandescent lamp as a heat source and thermocouple sensors for acquisition of electronic temperature signal. From the moment in which the temperature on the upper surface of flour remained constant, the data were acquired at a predefined time interval, which allowed obtaining the thermal diffusivity. To evaluate the results achieved from the experiments, it was carried out a simulation in Partial Differential Equation Toolbox of Matlab R2015a, in order to compare the temperature distributions within the solid. It was verified that the values showed by simulation are satisfactorily close to the experimental values.Practical applicationsSome information about physical properties of foods usually are not available, therefore, a simple method to estimate the thermal diffusivity could be useful, once it influences the quality control of foods. Thus, the findings of this study may facilitate the food industry, assisting the design, and simulation of process, such as heating, cooling, freezing, defrosting, frying, and storage.
Use of Scilab and Arduino for data acquisition environmental Tiago Francisconi Borges Camargo, Cristian Tomazela Prado, Monica Ronobo Coutinho, Marcio Higa, Wagner Andre dos Santos Conceicao, Cid Marcos Goncalves Andrade 2015 IEEE 12th International Conference on Electronic Measurement and Instruments Icemi 2015, 2016
Computer-aided visual inspection Cristian Tomazela Prado, Felipe de Deus, Carlos Henrique Contieri, Monica Ronobo Coutinho, Wagner Andre dos Santos Conceicao, Flavio Clareth Colman, Cid Marcos Goncalves Andrade 2015 IEEE 12th International Conference on Electronic Measurement and Instruments Icemi 2015, 2016
Application of the Hsu model to soybean grain hydration Mônica Ronobo Coutinho, Wagner André dos Santos Conceição, Paulo Roberto Paraíso, Cid Marcos Gonçalves Andrade, Edilson Sadayuki Omoto, Regina Maria Matos Jorge, Rubens Maciel Filho, Luiz Mario de Matos Jorge Ciencia E Tecnologia De Alimentos, 2010
Performance analysis of the control system of recycle processes Acta Scientiarum Technology, 2008
New model of lumped parameters applied to grain hydration Mônica Ronobo Coutinho, Wagner André dos Santos Conceição, Edílson Sadayuki Omoto, Cid Marcos Gonçalves Andrade, Luiz Mario de Matos Jorge Ciencia E Tecnologia De Alimentos, 2007
Identifying closed loop with mass recycling processes Xxii Interamerican Congress of Chemical Engineering Ciiq 2006 and V Argentinian Congress of Chemical Engineering Caiq 2006 Innovation and Management for Sustainable Development, 2006
Lumped parameters model applied to grain hydration: A linear mass transfer coefficient approach Xxii Interamerican Congress of Chemical Engineering Ciiq 2006 and V Argentinian Congress of Chemical Engineering Caiq 2006 Innovation and Management for Sustainable Development, 2006
