| 热力学能和焓的变化量求算公式的使用条件探讨 |
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| 引用本文： | 仝艳,李晓飞. 热力学能和焓的变化量求算公式的使用条件探讨[J]. 中国西部科技, 2012, 11(9): 69-69,64 |
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| 作者姓名： | 仝艳 李晓飞 |
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| 作者单位： | 河南中医学院药学院,河南郑州,450008 |
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| 基金项目： | 河南中医学院博士启动金（BSJJ2009-12）;河南省教育厅自然科学项目（20118180036）. |
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| 摘 要： | 为了详细讨论热力学能和焓的变化量的计算公式ΔH=Cp(T2-T1)和ΔU=CV(T2-T1)的使用条件,本文比较了推导该公式的两种不同方法的差别,揭示了热力学变量之间的内在规律。此计算公式应用于理想气体的任何过程而没有等压等容条件的原因是由于理想气体的热力学能和焓只是温度的函数。
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| 关 键 词： | 焓变 热力学能 热容 理想气体 |
The Application Condition of the Formulas of the Change of Enthalpy and Thermodynamics Energy |
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| TONG Yan , LI Xiao-fei. The Application Condition of the Formulas of the Change of Enthalpy and Thermodynamics Energy[J]. Science and Technology of West China, 2012, 11(9): 69-69,64 |
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| Authors: | TONG Yan LI Xiao-fei |
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| Affiliation: | (College of pharmacy, Henan University of Traditional Chinese Medicine,Zhengzhou,Henan 450008,China) |
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| Abstract: | In order to discuss the application condition of the formulas AH= Cp （T2-T1） and AU= CV（T2-T1）, different ways of their illustration process were compared. The inherent laws of the relations of the thermodynamics functions were disclosed.It was concluded that the reasons why the formulas could be used in any process of the ideal gas was that enthalpy and thermodynamics energy were only the function of temperature. |
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| Keywords: | Enthalpy change Thermodynamics energy Thermal capacity Perfect gas |
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