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  4. Universal dependence for determining exergetic output-input ratio of air split-conditioner heat pump

Universal dependence for determining exergetic output-input ratio of air split-conditioner heat pump

MMC.
2022;
Volume 9, Number 4
: pp. 945–949
https://doi.org/10.23939/mmc2022.04.945
Received: February 08, 2022
Revised: October 29, 2022

Mathematical Modeling and Computing, Vol. 9, No. 4, pp. 945–949 (2022)

Authors:
  1. V. Yo. Labay
  2. H. M. Klymenko
  3. M. P. Gensetskyi
1
Department of Heat, Gas Supply and Ventilation, Institute of Construction and Engineering Systems, Lviv Polytechnic National University
2
Department of Heat, Gas Supply and Ventilation, Institute of Construction and Engineering Systems, Lviv Polytechnic National University
3
Lviv Technical and Economic College, Lviv Polytechnic National University

Today, in air conditioning and heating systems for small rooms of industrial, public, and residential buildings, the use of heat pumps of air split-conditioners is becoming more common.  However, heat pumps of air split-conditioners are energy-intensive equipment, and, therefore, the need to increase their energy efficiency arises.  It is important to reduce energy consumption during the refrigeration machines operating in the mode of heat pump in air split-conditioners, which is possible using a modern method of thermodynamics — an exergetic one.  Exergetic analysis allows for establishing the maximum thermodynamic capabilities of the system, determining the losses of exergy in it, and substantiating recommendations for improving some of its elements.  The exergetic method of analysis of the operation of one-stage steam-compressor freon heat pumps of air split-conditioners developed by the authors is used in this article.  As a result, the universal dependence for determining the exergetic output-input ratio (OIR) for the air split-conditioner heat pump by "Mitsubishi Electric" with a heating capacity of 3200 W has been established, which makes it possible to select the parameters of its operation with the maximum exergetic OIR.  The described algorithm for obtaining such a universal dependence can be used for heat pump air split-conditioner of any firm and any heating capacity.

heat pump of air split-conditioner
exergy balance
exergy efficiency
equal internal temperature conditions
  1. Szargut J., Petela R.  Exergy. Moscow, Energy (1968), (in Russian).
  2. Sokolov E. Y., Brodyansky V. M.  Energy Basis of Transformation of Heat and Cooling Processes.  Moscow, Energoizdat (1981), (in Russian).
  3. Silvio de Oliveira Junior.  Exergy. Production, Cost and Renewability.  Springer (2013).
  4. Sazhin B. S., Bulekov A. P., Sazhin B. S.  Exergy Analysis of Work of Industrial Plants: Monograph, Moscow (2000), (in Russian).
  5. Bejan A.  Advanced Engineering Thermodynamics.  New York, John Wiley & Sons (1988).
  6. Bejan A., Tsatsaronis G., Moran M.  Thermal Design and Optimization.  New York, J. Wiley (1996).
  7. Morosuk T., Nikulshin R., Morosuk L.  Entropy-Cycle Method for Analysis of Refrigeration Machine and Heat Pump Cycles.  Thermal Science.  10 (1), 111–124 (2006) .
  8. Morozyuk T. V.  Theory of Refrigeration Machines and Heat Pumps.  Odessa, Studio "Negotsiant" (2006), (in Russian).
  9. Morosuk T. V.  New step in the development of exergy analysis.  Refrigeration Engineering and Technology.  4 (150), 13–17 (2014).
  10. Tsatsaronis J.  The Interaction of Thermodynamics and Economy to Minimize Cost of Energy Conversion Systems.  Odessa, Studio "Negotsiant" (2002), (in Russian).
  11. Labay V. Yo., Khanyk Ya. M.  Application of R407C and R410A refrigerants in air split-conditioners.  Refrigeration Engineering and Technology.  3 (113), 13–17 (2008), (in Ukrainian).
  12. Labay V., Dovbush O., Yaroslav V., Klymenko H.  Mathematical Modeling of a Split-conditioner Operation for Evaluation of Exergy Efficiency of the R600A Refrigerant Application. Scientific.  Mathematical Modeling and Computing.  5 (2), 169–177 (2018).
  13. Labay V. Yo., Yaroslav V. Yu., Dovbush O. M., Tsizda A. Ye.  Mathematical Modeling of an Air Split-Conditioner Heat Pump Operation for Investigation its Exergetic Efficiency.  Mathematical Modeling and Computing.  7 (1), 169–178 (2020).
  14. Labay V., Yaroslav V., Dovbush O., Piznak B.  Dependence of Evaporation Temperature and Exergetic Efficiency of Air Split-Conditioners Heat Pumps from the External Air Temperature.  In: Blikharskyy Z. (eds) Proceedings of EcoComfort 2020. EcoComfort 2020. Lecture Notes in Civil Engineering.  100, 253–259 (2021).
  15. Labay V. Yo., Yaroslav V. Yu., Dovbush O. M., Tsizda A. Ye.  Mathematical modeling bringing the operation of air split-conditioners heat pumps to the same internal temperature conditions.  Mathematical Modeling and Computing.  8 (3), 509–514 (2021).
  16. Jakobsen A., Rassmussen B.-D., Skovrup M.-J., Andersen S.-E.  CoolPack – a collection of simulation tools for refrigeration – Tutorial – Version 1.46.  Department of Energy Engineering Technical University of Denmark (2001).
  17. Mitsubishi Electric Catalogs Split (2021).