Temperature Control and Stabilization of an Industrial Oven Using Thermoelectric Devices as the Stabilize Actuator

The purpose of this paper is to present the technique of how to stabilize the temperature in an industrial oven. The conventional ovens in industries use the electric heaters for increasing the temperature in the oven and may use a blower to blow out the exceeded heat. When the controlled temperature is higher than the set point, the blower may blow out the exceeded heat more than expected that make the temperature is difficult to control and stabilize. In this case, the thermoelectric devices are used to solve these problems. The thermoelectric modules can use to increase or decrease the temperature by inverting the polarity of the thermoelectric module supplied voltage. The designed system consists of a 1,000 watts halogen light bulb, six 60 watts and two 240 watts thermoelectric modules and a microcontroller. The halogen light bulb and the thermoelectric modules are used to heat the oven temperature at the beginning of the heating process for making the temperature increase to the decision set point. The eight thermoelectric modules are used to stabilize the temperature at the set point. The testing results show that the closed-loop response of the temperature or the proposed oven system is significantly better than the oven that uses only the halogen lamp in term of heat overshoot.