Maximizing work of finite-potential-reservoir isothermal-chemical-engines with generalized models of bypass-mass-leakage and mass-resistance

Finite-potential-source (FPS) is a feature of isothermal-chemical-engine (ICE) cycle. Model of irreversible FPS iICE with generalized models of bypass-mass-leakage (BML) and mass-resistance is built. Mathematical conditions corresponding to maximum-work-output (MWO) of ICE are deduced using averaged-optimal-control method. Effects of FPS potential capacity characteristic, BML and mass-transfer laws on optimal-cycle-configurations (OCCs) are analyzed. Results obtained include eight special cases, and indicate that: Key component potential-difference between FPS and working-fluid is a constant with MWO objective for endoreversible FPS ICE with linear mass-transfer law (MTL); Ratio of square of difference of concentration of key-component (CKC) between FPS and working-fluid of ICE to CKC in working-fluid is constant with MWO objective for endoreversible FPS ICE with Fick’s diffusive MTL; Optimal CKC relations between FPS and working-fluid with MWO objective for irreversible FPS ICE with BML and mass-resistance are different from those with MWO objective for endoreversible FPS ICE with mass-resistance significantly; Optimal power-second law efficiency relation curves for endoreversible FPS and infinite-potential-source ICEs with mass-resistance are parabolic-type ones, while those for irreversible FPS and infinite-potential-source ICEs with BML and mass-resistance are loop-shaped ones.