About some properties and features of differential and integrated representations in the theory of thermodynamic functions
Автор: Zhakatayev Toksan A., Sakipov Kamalkhan E., Kakimova Klara Sh., Аytmagambetova Maralgul B.
Журнал: Журнал Сибирского федерального университета. Серия: Техника и технологии @technologies-sfu
Статья в выпуске: 8 т.9, 2016 года.
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In article the comparative analysis of differential and integrated consideration of thermodynamic process is carried out. It is shown that use of the rule of replacement of variables of integration leads to correct output of main thermodynamic functions (an enthalpy, Helmholtz's function and Gibbs's function). It occurs through integrated consideration of thermodynamic process when parameters change in fi nal (limited) intervals. It is established that Integrated consideration of the law of energy conservation in general view for the moving fi nal volume of liquid or gas leads to «expanded» option of formula for the fi rst law of thermodynamics. At the same time the equations recorded in differential form taking into account different types of technical work. Communications between the work of pushing through of some volume of gas and work connected with pressure at expansion of gas volume are shown.
Thermodynamic function, pushing through work, thermodynamic potentials, enthalpy, law of energy conservation, moving volume of gas, mobile borders, fi nal volume, fi nal interval of change
Короткий адрес: https://sciup.org/146115165
IDR: 146115165 | DOI: 10.17516/1999-494X-2016-9-8-1314-1325
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