In the present work, an experimental analysis was performed to obtain the calibration curve of three load cells connected in series. The control of the load applied on a given component is an important factor in some engineering applications, for example, in cases where it is desired to increase the heat exchange between two surfaces. One of the ways to control the applied load is the use of load cells, which has as its principle of use a strain gauge that has its resistance varied when it undergoes a deformation, thus causing a voltage variation due to the application of load. This study used an ArduinoTM microcontroller as a data acquisition system and blocks with known mass for load application.  In this way it was possible to obtain the calibration curve of the load cells by means of linear regression between the mass of the blocks and the data obtained by the ArduinoTM microcontroller and verify their applicability according to their measurement uncertainties.

The heat pipes basically consist of a metal tube sealed with a capillary structure internally that is embedded with a working fluid. In heat pipes, the most important properties to be characterized are those related to pore structure and thermal conductivity, as they are responsible for capillary pumping and heat transfer, respectively. In this research, an experimental evaluation of the thermal conductivity of a sintered copper powder structure was performed, which can be used as a capillary structure in heat pipes. An experimental workbench based on the guarded-hot-plate principle was

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Influência da força de aperto sobre a geração de potência elétrica de um gerador termoelétrico por meio do efeito Seebeck Influence of the clamping force on the generation of electrical power of a thermoelectric generator through the Seebeck effect

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