The rationale of using the heat of condensation and heat of superheat to heat the hot water

Authors

  • M. V. Savytskyi Dr. Sc. (Tech.), Prof., Ukraine
  • V. B. Skrypnikov Dr. Sc. (Tech.), Prof., Ukraine
  • M. M. Lyachovetskaya-Tokareva PH.D. (Tech.), Ukraine
  • A. E. Lahunovskyi stud., Ukraine

Keywords:

heat transfer, evaporator, compressor.

Abstract

Abstract. Purpose. The aim of this work is the effective use of the heat produced by refrigeration units (heat is typically unused). Methodology. To achieve this goal the proposed use of the known physiological dependency with the use of modern technology regulation. As parameters must be set: temperature of evaporation and condensation refrigerating machines; power consumption compressor chillers as a function of condensing temperature and download installation; changes in the performance of the evaporative cooler on heat transfer depending on the enthalpy of the air; the power consumption of pumps and fans; download installation; operational limits of the plant; the mutual influence of the above parameters. Findings. During the study of various energy conversion processes there is a need to evaluate the thermodynamic efficiency of the processes and the sources of loss in them. To do this, use termodinamicheski method – exergetically. Presents the results of the exergy studies for refrigerating machines with different condensing temperatures. Originality. Optimal scheme in regulation needs to consider these dependencies in order to minimize the power consumption of all the drives of compressors, pumps and fans. However, it is necessary to take operational limits of the various components of the installation. Practical value. Using computers is calculated the energy optimum. Thus, it is possible, depending on download install for variable temperature, to determine the optimal temperature of the cooling water. Then, when it can be applied to minimize the overall power drives for compressors, water pumps and tower fans chillers. This optimization is implemented in a closed loop through the use of the regulatory system.

Author Biographies

M. V. Savytskyi, Dr. Sc. (Tech.), Prof.

Department of Reinforce-Concrete and Stoune Constructions, State Higher Education Establishment ―Pridneprovsk State Academy of Civil Engineering and Architecture‖, 24-A, Chernishevskogo str., Dnipropetrovsk 49600, Ukraine

V. B. Skrypnikov, Dr. Sc. (Tech.), Prof.

Department of heating, ventilation and quality of air environment, State Higher Education Establishment ―Pridneprovsk State Academy of Civil Engineering and Architecture‖, 24-A, Chernishevskogo str., Dnipropetrovsk 49600, Ukraine

M. M. Lyachovetskaya-Tokareva, PH.D. (Tech.)

Department of heating, ventilation and quality of air environment, State Higher Education Establishment ―Pridneprovsk State Academy of Civil Engineering and Architecture‖, 24-A, Chernishevskogo str., Dnipropetrovsk 49600, Ukraine

A. E. Lahunovskyi, stud.

Department of heating, ventilation and quality of air environment, State Higher Education Establishment ―Pridneprovsk State Academy of Civil Engineering and Architecture‖, 24-A, Chernishevskogo str., Dnipropetrovsk 49600, Ukraine

References

Baehr H. D. O ponyatii eksergiya [On the concept of exergy], Thermodynamik, Springer, Berlin 1966. (in Russian)

Skrypnikov V. B. Analiz termodinamicheskih protsessov v sistemah ohlazhdeniya i teplovyih nasosah [Analysis of thermodynamic processes in refrigeration systems and heat pumps] / Skrypnikov V. B. / Dnepropetrovsk. – 2006. – 261 p. (in Russian)

Kumar S., Prevost M., Boudarel R. Eksergeticheskiy analiz kompressionnoy holodilnoy ustanovki [Exergy analysis of a compression refrigeration unit] / Kumar S. – Dnipropetrovsk. – 2006. – Р. 10-20. (in Russian)

Tauber S. Ispolzovanie otrabotavshego tepla kompressionnyimi holodilnikami [The use of exhaust heat of compression refrigerators] / Tauber S. – Dnipropetrovsk. – 2006. – Р. 114-120. (in Russian)

Parfenov V. P. Analiz vliyaniya ohlazhdeniya na termodinamicheskuyu effektivnost mnogostupenchatoy kompressornoy ustanovki [Analysis of the influence of cooling on the thermodynamic efficiency of a multistage compressor]. Izv. Universities, Energy// Parfenov V. P. / 1991. – №7 – P. 12-15. (in Russian)

Eremenko E. N., Lutenko V. F., Thymine A. L. Utilizatsiya tepla szhatiya vozduha na kompressornyih stantsiyah obschego naznacheniya [Heat recovery from air compression at compressor stations of general purpose]. // Eremenko E. N. / Chemical and petroleum engineering. 1981. – № 1 – P. 27-30. (in Russian)

Published

2016-09-27

Issue

Section

Energy, ecology, computer technology in construction