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Finite-time Thermodynamics Approach to the Phase Transition of the Second Order
Yuan Duqi
Author NameAffiliationE-mail
Yuan Duqi Department of Physics, Baoji College of Arts and Science, Baoji 721007 yuanduq@21cn.com 
Abstract:
A new formula for the specific heat jump ΔC|Tc to the phase transition of the second order and generalized Ehrenfest equation are derived by means of the method of endoreversible Carnot cycle, which can mirror the irreversible features in a phase transition of the second order. The results are universal for reversible phase transition and irreversible phase transition of various substances. Then, the irreversible phase transition of the second order for simple system (P,V,T), the superconducting transition and paraelectricity-ferroelectrics transition are discussed by means of the new formula for the specific heat jump.
Key words:  Phase transition of the second order, Specific heat jump, Irreversible, Finite-time thermodynamics
FundProject:
临界点二级相变的有限时间热力学逼近
袁都奇*
摘要:
应用内可逆卡诺循环的方法,导出了各种物质在临界点附近可逆与不可逆二级相变普遍适用的比热跃变公式以及广义的爱伦菲斯特方程。对简单(P,V,T)系统、超导、电介质顺电一铁电二级相变进行了应用讨论。
关键词:  二级相变  比热跃变  不可逆  有限时间热力学
DOI:10.1088/1674-0068/14/2/246-250
分类号: