Análise e otimização de ciclos de refrigeração com injeção de vapor e tanque flash utilizando misturas de refrigerantes

Carvalho, Stella Maia Rocha de

doi:10.47749/t/unicamp.2017.986092

Cited by 1 publication

(3 citation statements)

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“…Figure 4 is divided into four steps that are responsible for the temperatures. In step (1), the Arduino serial communication with the computer is initialized in (2). It initializes and configures the SPI communication with the MAX 6675 module.…”

Section: Development Of a Low-cost Data Acquisition Systemmentioning

confidence: 99%

“…It has become the main focus of engineers and researchers to keep a product or ambient refrigerated as efficiently as possible. 1,2 According to Bernades et al, 3 the energy efficiency of refrigeration systems is an important vector to attend to future energy demand, 3 contributing to energy security, economic competitiveness, and reduction of environmental impacts.…”

Section: Introductionmentioning

confidence: 99%

“…For Carvalho et al, 2 the ongoing search for more efficient refrigeration systems that are less aggressive to the environment involves several lines of research, such as the study of alternative thermodynamic cycles, use of new refrigerants, and improvements in device and equipment designs (compressors, valves, and heat exchangers). In addition to these lines, in recent years, there are many studies on the use of intelligent techniques for controlling and monitoring refrigeration systems to improve efficiency and quality.…”

Section: Introductionmentioning

confidence: 99%

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Development of a low-cost data acquisition system for a vapor compression refrigeration experimental workbench

Foresto

Martins

LAGO

et al. 2023

International Journal of Mechanical Engineering Education

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Refrigeration and air conditioning systems are essential in residential, commercial, and industrial segments. The data acquisition and the control of equipment results in an improvement in efficiency and a decrease in energy consumption, considering that the data obtained bring a better visualization and understanding of the components of the system. This work aims to automate data acquisition from a vapor compression refrigeration workbench by developing a low-cost data acquisition system. The system was developed using Arduino and LabView with the assistance of LINX software. After the communication between the controller and the program, six thermocouples were installed on the refrigeration workbench to acquire the temperatures in the program of the data acquisition system. For reading system pressure values, a camera was used to capture images from six analog pressure gauges. From reading these data, the pressure-enthalpy diagram of the thermodynamic cycle was obtained. The experimental refrigeration workbench has been used in teaching and research activities. The data acquisition system developed for the refrigeration workbench improved the realization of experiments, allowing a better comparison between experimental and theoretical results.

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Section: Development Of a Low-cost Data Acquisition Systemmentioning

confidence: 99%