Resumo

CHIMAL-EGUIA, J.C.. Dynamic stability in an endoreversible chemical reactor. Rev. Mex. Ing. Quím [online]. 2015, vol.14, n.3, pp.703-710. ISSN 1665-2738.

This article presents a local stability study for an endoreversible Chemical Reactor (ECR). The model consists of two particle reservoirs, one at high chemical potential μ₁ and the other at low chemical potential μ₂ (the terms "high" and "low" refer to the situation in which μ₁ > μ₂). There are two particle resistors (in this work for simplicity we take h₁ = h₂ = h), that restrict the particle flows N₁ and N₂. The net result is a particle flow drop from N₁ to an intermediate particle reservoir N₃ and from N₄ to N₂. From the local stability analysis it was concluded that the ECR is stable for every value of h, C₁ and τ = n_x/n_y. After a small perturbation, the system declines to the steady state with two different relaxation times both being proportional to C, h and τ. Finally, when the power output in the steady state versus τ is plotted, it demonstrates how an increment of τ can improve the system stability. This suggests a compromise between the stability and the engine energetic properties driven by τ.

Palavras-chave : endoreversible; chemical reactor; stability; steady state; power output.