Minimum mass-entransy dissipation profile for one-way isothermal diffusive mass-transfer process with mass-resistance and mass-leakage

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外文摘要：As a new concept,mass-entransy is one of the twins in the core of entransy theory.It can describe mass-transfer ability for mass-transfer processes(MTPes),just as thermal-entransy for describing heat-transfer ability.Accordingly,mass-entransy dissipation can be utilized to evaluate the loss of mass-transfer ability.Minimum mass-entransy dissipation(MMED)is utilized to optimize one-way isothermal diffusive MTPes with mass-leakage and mass-transfer law(g ∝ Δ(c),where c means concentration).For a given net amount of mass-transferred key components at the low-concentration side,optimality-condition for the MMED of isothermal diffusive MTPes is obtained by using the averaged-optimization-method.Effects of the amount of mass-transferred and mass-leakage on optimal results are analyzed,and the obtained optimization profiles are compared with those for MTP profiles of constant-concentration-difference(c1-c2=const)and constant-concentration-ratio(c1/c2=const).The product of square of key-component-concentration(KCC)difference between high-and low-concentration sides and inert component concentration at high-concentration side for the MMED of the MTP with no mass-leakage is a constant,and the optimal relationship of the KCCs between high-and low-concentration sides with mass-leakage is significantly different from the former.When mass-leakage is relatively small,the MTP with c1-c2=const strategy is superior to that with c1/c2=const strategy,and the latter is superior to the former with an increase in mass-leakage.A combination of mass-entransy concept,finite-time thermodynamics,and averaged-optimization-method is a meaningful tool for optimizing MTPes.

外文关键词：

diffusive mass-transfer-lawmass-leakageone-way isothermal mass-transferminimum mass-entransy dissipationfinite-time thermodynamicsaveraged-optimization-method

作者：

CHEN LinGen、XIA ShaoJun

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作者单位：

Institute of Thermal Science and Power Engineering,Wuhan Institute of Technology,Wuhan 430205,China

School of Mechanical & Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,China

School of Power Engineering,Naval University of Engineering,Wuhan 430033,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China

项目编号：

5217131751976235

出版年：

2024

DOI：

10.1007/s11431-023-2575-y

中国科学:技术科学(英文版)

中国科学院

中国科学:技术科学(英文版)

CSTPCDEI

影响因子：1.056

ISSN：1674-7321

年,卷(期)：2024.67(8)

参考文献量6