Bond graph Model For Peltier Element

摘要

The Peltier cooler (also known as thermoelectric cooler) represents a device that acts like a heat pump: at the cold surface, energy (heat) is absorbed by the electrons (the "refrigerant") and at the hot surface energy is expelled to a heat sink. The classical model for Peltier element is based on electric-thermal analogy. It consists in an "electrical" network and has two main parts: an electrical part and a thermal part. In fact, there are two models, one for each physical domain. A bond graph emphasizes two kinds of couplings existing between electrical and thermal part: one hand, the Seebeck/Peltier effect (reversible) and in the other hand the power dissipation of the Peltier resistance (irreversible). The bond graph model for Peltier element represents a good example that proves the unifying attitude of bond graphs regarding complex systems modeling. Further, this model can be use to simulate the behavior of a Peltier cooler in certain conditions. It is possible therefore to design a thermoelectric cooling device in a single step instead of traditional procedure that suppose a couple of iterations because of totally separated calculations for electrical and thermal part respectively.