Maximum work configurations of finite potential capacity reservoir chemical engines

作     者：Xia, ShaoJun Chen, LinGen Sun, FengRui 

作者机构：Postgraduate School Naval University of Engineering Wuhan 430033 China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2010年第53卷第5期

页      面：1167-1175页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：supported by the Program for New Century Excellent Talents of China (NCET-04-1006) the Foundation for the Author of National Excellent Doctoral Dissertation of China(200136) 

主　　题：isothermal endoreversible chemical engine maximum work output optimal control finite time thermodynamics generalized thermodynamic optimization 

摘      要：An isothermal endoreversible chemical engine operating between the finite potential capacity high-chemical-potential reservoir and the infinite potential capacity low-chemical-potential reservoir has been studied in this *** control theory was applied to determine the optimal cycle configurations corresponding to the maximum work output per cycle for the fixed total cycle time and a universal mass transfer *** of special examples showed that the optimal cycle configuration with the mass transfer law g∝△μ,where△μis the chemical potential difference,is an isothermal endoreversible chemical engine cycle,in which the chemical potential(or the concentration) of the key component in the working substance of low-chemical-potential side is a constant,while the chemical potentials(or the concentrations) of the key component in the finite potential capacity high-chemical-potential reservoir and the corresponding side working substance change nonlinearly with time,and the difference of the chemical potentials(or the ratio of the concentrations) of the key component between the high-chemical-potential reservoir and the working substance is a *** the optimal cycle configuration with the mass transfer law g∝△μc,where △μc is the concentration difference,is different from that with the mass transfer law g∝△μ *** the high-chemical-potential reservoir is also an infinite potential capacity chemical potential reservoir,the optimal cycle configuration of the isothermal endoreversible chemical engine consists of two constant chemical potential branches and two instantaneous constant mass-flux branches,which is independent of the mass transfer *** object studied in this paper is general,and the results can provide some guidelines for optimal design and operation of real chemical engines.