Published June 30, 2021 | Version v1
Journal article Open

Thermodynamic analysis of the thermal-technological complex of sugar production: criteria for energy efficiency of an enterprise

Creators

  • 1. National University of Food Technologies
  • 2. Kyiv National University of Trade and Economics
  • 3. State Agrarian and Engineering University in Podilia

Description

A procedure for analyzing the effectiveness of using fuel and energy resources (FER) in sugar production, based on the developed idealized circuit of the thermal-technological complex (TTC) as the base for comparison was presented. This procedure makes it possible to quantify the level of perfection of existing and proposed thermal circuits, as well as the impact of measures for enhancing energy efficiency on their perfection.

By idealizing technological and energy processes, a hypothetical TTC was synthesized, for which the minimum possible energy and entropy characteristics are determined. Under these conditions, the minimum possible heat consumption for the implementation of technological processes according to the classical heat technology circuit was calculated – 118.40 MJ/t; a "minimum" total increase in entropy from irreversible processes of the HTC – 314.68 kJ/(t·K); a minimum complex magnitude of specific consumption of conventional fuel – 0.8 % to m. b.

The determined characteristics are absolute criteria for the efficiency of sugar production systems, since it is impossible to reach lower values under existing technology, quality of raw materials and other conditions. The content of the criteria of energy efficiency of TTC was stated and the system of coefficients was proposed: coefficient of total energy efficiency of the TTC, coefficient of energy efficiency of the system of heat supply of the technological processes and coefficients of energy efficiency of internal and external structures of the TTC. The proposed criteria provide an objective and thermodynamically correct characteristic of the TTC of different structures.

The presented results of analysis of various measures for increasing the energy efficiency of sugar production show that only a gradual comprehensive reconstruction of an enterprise makes it possible to consistently reduce the FER consumption for technological needs, approaching the boundary values.

Files

Thermodynamic analysis of the thermal-technological complex of sugar production criteria for energy efficiency of an enterprise.pdf

Files (842.1 kB)

Additional details

References

  • Kaushik, S. C., Reddy, V. S., Tyagi, S. K. (2011). Energy and exergy analyses of thermal power plants: A review. Renewable and Sustainable Energy Reviews, 15 (4), 1857–1872. doi: https://doi.org/10.1016/j.rser.2010.12.007
  • Sama, D. A. (1995). The Use of the Second Law of Thermodynamics in Process Design. Journal of Energy Resources Technology, 117 (3), 179–185. doi: https://doi.org/10.1115/1.2835338
  • Taner, T., Sivrioglu, M. (2015). Energy–exergy analysis and optimisation of a model sugar factory in Turkey. Energy, 93, 641–654. doi: https://doi.org/10.1016/j.energy.2015.09.007
  • Taner, T., Sivrioglu, M. (2015). Data on energy, exergy analysis and optimisation for a sugar factory. Data in Brief, 5, 408–410. doi: https://doi.org/10.1016/j.dib.2015.09.028
  • Tekin, T., Bayramoğlu, M. (1998). Exergy Loss Minimization Analysis of Sugar Production Process from Sugar Beet. Food and Bioproducts Processing, 76 (3), 149–154. doi: https://doi.org/10.1205/096030898531963
  • Vasilenko, S., Samiilenko, S., Bondar, V., Bilyk, O. (2020). Complex thermodynamic analysis of the heat-technological complex of sugar production: analysis method. Technology Audit and Production Reserves, 2 (1 (52)), 4–11. doi: https://doi.org/10.15587/2706-5448.2020.202026
  • Metodyky po vyznachenniu normatyvnykh pokaznykiv pytomykh vytrat palyvno-enerhetychnykh resursiv pry pererobtsi tsukrovykh buriakiv (2006). Kyiv: «Tsukor Ukrainy», 150.
  • Kniaziev, A. O., Filonenko, V. M., Vasylenko, S. M., Petrenko, V. P. (1994). Vytraty tepla i palyva na vyrobnytstvo tsukru: perspektyvni, proektni, realni. Tsukor Ukrainy, 1, 8–13.
  • Khrystenko, V. I., Shtanheiev, K. O., Mishchuk, R. Ts. (2000). Vyznachennia ta metodyka rozrakhunku teplovtrat pry saturatsii. Tsukor Ukrainy, 2, 14–16.
  • Tovazhnyanskiy, L. L., Kapustenko, P. A., Ul'ev, L. M. (1999). Opredelenie energosberegayuschego potentsiala promyshlennyh predpriyatiy s pomosch'yu postroeniya sostavnyh krivyh tekhnologicheskih potokov. Intehrovani tekhnolohiyi ta enerhozberezhennnia, 1, 14–27.
  • Zagrodskiy, S.; Sapronova, R. (Ed.) (1984). Teplovoe hozyaystvo saharnyh zavodov. M.oscow: Legkaya i pischevaya promyshlenost', 128.
  • Vasilenko, S., Samiilenko, S., Bondar, V., Bilyk, O., Mokretskyy, V., Przybylski, W. (2020). Thermodynamic analysis of the thermal-technological complex of sugar production: the energy and entropy characteristics of an enterprise. Eastern-European Journal of Enterprise Technologies, 3 (8 (105)), 24–31. doi: https://doi.org/10.15587/1729-4061.2020.205148