以包含传质不可逆性损失的内可逆化学机模型为研究对象,考虑化学机工质与物质库间服从线性传质规律,研究化学机系统工作在最大功率时的局域稳定性,导出表征化学机系统局域稳定性弛豫时间的一般表达式;讨论物质库化学势比和传质系数对系统稳定性的影响,给出系统的相图,发现化学机系统工作在最大功率时是稳定的。
Taking an endoreversible chemical engine model with loss of mass transfer as a research object, this paper makes an analysis of the local stability of the chemical engine working at the maximum power output according to the linear mass transfer law between the cyclic working fluid and the mass reservoirs, thereby derives general expressions for relaxation times characteristic of stability of the system. The phase portrait of the system based on the discussion of the effects of ratio of mass reservoirst chemical potentials and mass transfer coefficients on the stability of the system shows that the chemical engine works stably at the maximum power output.