**2.14 Thermo electric bulk and nanostructured materials**

Numerous analytical solutions had been formulated [16] for coupled nonlinear behavior of thermoelectric device in one dimension. These devices are used in

refrigeration and energy harvesting. In this research, a nonlinear model of thermoelectricity was developed using finite element method. The simulated model takes in to account Seebeck, Peltier and Thomson effects [16]. The FEM is represented in potential variables i.e., voltage and temperature and solved using Newton method by formulating stiffness and Jacobian matrices. The results were verified with simulated one dimensional model. The FEM is then implemented to estimate energy conversion of nanostructured thermoelectric materials. Thus the advantages of nanostructured materials lie in the increased performance and miniaturization.
