大学化学 >> 2018, Vol. 33 >> Issue (3): 74-77.doi: 10.3866/PKU.DXHX201711006

师生笔谈 上一篇    下一篇

恒温过程的热量传递

刘玉琛*(),王铭琦   

  • 收稿日期:2017-11-06 发布日期:2018-03-13
  • 通讯作者: 刘玉琛 E-mail:liuyuchen78@sina.com.cn

Discussion of Heat Transfer in Isothermal Process

Yuchen LIU*(),Mingqi WANG   

  • Received:2017-11-06 Published:2018-03-13
  • Contact: Yuchen LIU E-mail:liuyuchen78@sina.com.cn

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摘要：

目前，基于物化教材上对"恒温过程"和"热"的定义，初学者在理解恒温过程的热量传递时往往会产生很大困惑。对概念的孤立和片面理解是造成该结果的根本原因。本文借助数学上的极限思想，以理想气体的恒温可逆膨胀过程为例，对该过程的能量传递做出详细剖析，以消除物理化学初学者在入门期的学习障碍。

关键词: 理想气体, 恒温过程, 热, 功

Abstract:

At present, the definition of isothermal process and heat in textbooks of physical chemistry make students confused when investigating heat transfer of the isothermal process. Isolated and incomplete understanding of concepts are the fundamental causes of the result. In order to clear the learning barrier for the beginner of physical chemistry, by taking isothermal reversible expansion process of perfect gas as an example, the heat transfer of isothermal process was explained in detail, and the mathematical limit thought was used in analysis process in the article.

Key words: Perfect gas, Isothermal process, Heat, Work