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Основы технической термодинамики
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- 2011 год
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Contents
Introduction
1. Determination of thermodynamics
1.1 Sections of thermodynamics
2. The physical meaning of thermodynamics
2.1 The necessity of thermodynamics
2.2 Laws of thermodynamics
Conclusion
References
1. Determination of thermodynamics
Thermodynamics - the branch of physics that studies the relation and the transformation of heat and other forms of energy. In some disciplines stood out chemical thermodynamics, which studies the physical and chemical transformations associated with the release or absorption of heat, and thermal engineering. In thermodynamics, deal not with individual molecules and the macroscopic bodies composed of a large number of particles. These bodies are called thermodynamic systems. In thermodynamics, thermal phenomena are described by macroscopic quantities - pressure, temperature, volume, which do not apply to individual molecules and atoms. In theoretical physics, together with the phenomenological thermodynamics, the study of the phenomenology of thermal processes, produce statistical thermodynamics, which was established to mechanical study of thermodynamics and was one of the first sections of statistical physics.
2.2 Laws of thermodynamics
Thermodynamics is based on three laws - principles that are formulated on the basis of experimental data and can therefore be taken as postulates.
* 1 st law - the first law of thermodynamics. Is a generalized statement of the law of conservation of energy for thermodynamic processes. In the simplest form it can be written as δQ = δA + dU, where dU is the total differential of internal energy, and δQ and δA is an elementary quantity of heat transferred to the system, and the elementary work done by the system, respectively. Need to take into account that δA and δQ differentials can not be considered in the conventional sense, since these quantities depend strongly on the type of process, which resulted in the state of the system changed.
* 2 nd law - the second law of thermodynamics: the second law of thermodynamics precludes the possibility of creating a perpetual motion machine of the second kind.
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Список литературы
1. Б. В. КОШЕВОЙ. Основы технической термодинамики. учебное пособие для втузов, ГНТИ, 1931
2. Основы гидравлики, технической термодинамики и теплопередачи. Учебное пособие в 2-х частях. – Барнаул: Изд-во АлтГТУ, 1998.
3. Техническая термодинамика и теплопередача.- М.: Высшая школа., 1979 г.
1. B.V. Koshevoy. Fundamentals of Technical Thermodynamics. textbook for higher technical schools, GNTI, 1931
2. Basics of hydraulics, thermodynamics and heat transfer technology. Tutorial in 2 parts. - Barnaul: Altai State Technical University Publishing House, 1998.
3. Engineering Thermodynamics and Heat Transfer .- M.: Higher School., 1979
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