MINIMUM OF EXERGY LOSSES IN NON-EQUILIBRIUN PROCESSE OF ACTUATING MEDIUMS HEAT EXCHANGE

  • V.P. Bondar The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • V.O. Zhukov The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • S.V. Zhukova The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
Keywords: heat-exchange, entropy, exergy, polytrope, heat-carrier, enthalpy

Abstract

In course of calculation of heat-exchange equipment, major parameters at which heat-exchanging process between heat-carriers runs with possible lesser losses of operational part of heat are defined by methods of thermo-dynamic. In comparison to developed methods of equilibrium processes of actuating mediums heat-exchange calculation, non-equilibrium is at stage of improvement. The research, allowing the defining minimum of entropy production and, accordingly, minimum of exergy losses in non-equilibrium processes of actuating media heat-exchange, is performed. Results of researches are valid both to externally non-equilibrium processes and polytropic. There is defined a dependency of the thermodynamic system entropy growth from the relation of the upper and lower boundary temperatures, independently from the operating media flow process in the heat-exchangers. There is shown that in certain degree of irreversibility the numerical value of which is determined technologically and structurally, there are the relations of thermodynamic parameters for which the operation media heat exchange entropy growth reaches of the minimum numerical value. As confirmation of analysis results example is presented, in which, on several variants, is shown course of entropy production of thermo-dynamic system through minimum that corresponds to the performed research. The carried analysis can find its application both in engineering works and analytical investigations. Bibl. 8, Fig. 1, Tab. 1.

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Published
2017-03-20
How to Cite
Bondar, V., Zhukov, V., & Zhukova, S. (2017). MINIMUM OF EXERGY LOSSES IN NON-EQUILIBRIUN PROCESSE OF ACTUATING MEDIUMS HEAT EXCHANGE. Energy Technologies & Resource Saving, (1), 39-44. https://doi.org/10.33070/etars.1.2017.04
Section
Thermophysical basics of energy processes