Prototype of a Reduced Scale of a Refrigeration System of Environments Controlled with Pulse Width Modulation (PWM) Using Thermoelectric Modules by Peltier Effect

Abstract

This paper presents the design of a scaled-down prototype of a proposed for a cooling system on environments for replacement of air conditioners by compressor. The operation of the proposed system differs from current systems by compressor to be a system based on the Peltier effect (thermoelectric modules) controlled by PWM ensuring maximum efficiency and precise control of the desired temperature. The prototype foresee the removal of air from the external environment (environment), making him circular of forced mode by a channel which will have its temperature reduced by heat exchange that occurring by indirect contact with the cold surface of the thermoelectric modules, thus arriving to at the environment to be cooled with temperature reduced at relative temperature taken by outside. The system is sensed and controlled via PWM modulation of a electronic apparatus comprising an temperature sensors LM35, development kit ARDUINO UNO and LABVIEW 2014 software which together aim to ensure efficient temperature control and efficiency in the consumption of electrical energy. It is presented in this paper the experimental development of prototype and its validation, thus confirming the technical feasibility of construction of an air conditioner using thermoelectric modules.