SOLID-STATE BASED THERMOELECTRIC DEVICES FOR COOLING AND HEATING

The project is basically to build an appropriate circuit for solid state thermoelectric
cooler or heater. The circuitry is used to control the connection in coldmode and hot
mode. The peltier device is fabricated by combining the standard n- and p- channel
semiconductor material with a two-element field emission device inserted into each
of the two channels to eliminate the solid-state thermal conductivity. In general, two
important components building up the thermoelectric cooler or heater is the
temperature controller using a microcontroller and peltier device that consists ofanntype
and p-type semiconductors of bismuth-telluride (Bi Tei) connected by H-bridge
circuitry. Both elements must be connected in such a way as to produce a heat sink
and heat source that are portable and using small amount of power in the atmosphere
of a car. For the microcontroller to work, a specific program is loaded and
programmed inside thememory of the PIC 16F877. Theobjectives of this project are
to have theoretical review on thermoelectric devices, search and learn the method of
developing the device. The activities are mainly focused on design and simulation.
All findings and the detailed analysis including key elements of the project, which is
to decide the parameters, and the design procedure that should be used, will be
conducted as to follow the overall concept ofthe project.