The model of an irreversible chemical pump is set up and the effects of mass-transfer irreversibility and mass leak on the performances of the chemical pump are revealed.

• 建立不可逆化学泵循环模型,揭示质量传递不可逆性和质量漏对其性能的影响,导出循环的泵能率与性能系数间的优化关系,在此基础上进一步讨论循环的其它优化特性。