Energy-Saving Individual Heating Systems Based on Liquid-Vapor Ejector | Journal of Engineering Sciences

Energy-Saving Individual Heating Systems Based on Liquid-Vapor Ejector

Author(s): Sharapov S. O.1, Bocko J.2, Yevtushenko S. O.1*, Panchenko V. O.3, Skydanenko M. S.4

1 Department of Technical Thermophysics, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, Ukraine;
2 Department of Applied Mechanics and Mechanical Engineering, Technical University of Košice, 1/9, Letná St., 040 01 Košice, Slovakia;
3 Department of Applied Fluid Aeromechanics, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, Ukraine;
4 Department of Chemical Engineering, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, Ukraine

*Corresponding Author’s Address: [email protected]

Issue: Volume 10, Issue 2 (2023)

Submitted: May 12, 2023
Received in revised form: July 31, 2023
Accepted for publication: August 5, 2023
Available online: August 7, 2023

Sharapov S. O., Bocko J., Yevtushenko S. O., Panchenko V. O., Skydanenko M. S. (2023). Energy-saving individual heating systems based on liquid-vapor ejector. Journal of Engineering Sciences (Ukraine), Vol. 10(2), pp. G1-G8. DOI: 10.21272/jes.2023.10(2).g1

DOI: 10.21272/jes.2023.10(2).g1

Research Area:  CHEMICAL ENGINEERING: Energy Efficient Technologies

Abstract. The problem of increasing the efficiency of individual heating systems is solved by using heat pumps based on a liquid-vapor ejector with the working fluid R718 (water). The research object was the working process of the liquid-vapor ejector, based on the principle of jet thermal compression. It involves the generation of vapor in the nozzle of the motive flow of the liquid-vapor ejector and does not require its supply from an external source. Schemes and descriptions of the traditional system and the proposed scheme were given. Their difference from the traditional ones was indicated according to the schematic solution and working cycle. The article compared the proposed schemes’ thermodynamic calculation with the working flow R718 and traditional heat pump systems with carried-out refrigerants R134a, R410a, and R32. As a result, the values of the thermodynamic parameters of all system components were obtained. The coefficients of performance (COP) for the traditional and proposed cycles were determined. Applying the new scheme made it possible to increase the COP by an average of 40 %. An exergy analysis assessed the expediency of implementing vacuum units based on liquid-vapor ejectors in individual heating systems. This made it possible to compare systems that use several types of energy (e.g., electrical, thermal) and to determine their efficiency with high accuracy. As a result of the exergy analysis, the value of the proposed scheme’s exergy efficiency was obtained.

Keywords: heat pump installation, individual heating system, liquid-vapor ejector, energy efficiency, solar collector.


  1. Dincer, I. (2017). Refrigeration Systems and Applications.Wiley, New Jersey, USA.
  2. Huang, H. (2020). Heat Pumps for Cold Climate Heating. CRC Press, Boca Raton, Florida, USA.
  3. El-Dessouky, H., Ettouney, H., Alatiqi, I., Al-Nuwaibit, G. (2002). Evaluation of steam jet ejectors. Chemical Engineering and Processing: Process Intensification, Vol. 41 (6), pp. 551–561.
  4. Akteriana, S. (2011). Improving the energy efficiency of traditional multi-stage steam-jet-ejector vacuum systems for deodorizing edible oils. Procedia Food Science, Vol. 1, pp. 1785–1791.
  5. Aidoun, Z., Ameur, K., Falsafioon, M., Badache, M. (2019). Current advances in ejector modeling, experimentation and applications for refrigeration and heat pumps. Part 1: Single-phase ejectors. Inventions, Vol. 4(1), 15.
  6. Tashtoush, B. M., Al-Nimr, M. A., Khasawneh, M. A. (2019). A comprehensive review of ejector design, performance, and applications. Applied Energy, Vol. 240, pp. 138–172.
  7. Tashtoush, B., Nayfeh, Y. (2020). Energy and economic analysis of a variable-geometry ejector in solar cooling systems for residential buildings. Journal of Energy Storage, Vol. 27, 101061.
  8. Thongtip, T., Aphornratana, S. (2017). An experimental analysis of the impact of primary nozzle geometries on the ejector performance used in R141b ejector refrigerator. Applied Thermal Engineering, Vol. 110, pp. 89–101,
  9. Allouche, Y., Bouden,C., Varga, S. (2014). A CFD analysis of the flow structure inside a steam ejector to identify the suitable experimental operating conditions for a solar-driven refrigeration system. International Journal of Refrigeration, Vol. 39, pp. 186–195.
  10. Nyvad, J., Elefsen, F. (1993). Energy efficient cooling by use of cycloid water vapor compressor. In: IIR, Proceedings of Ghent Meeting, Gent, Belgium, pp. 67–74.
  11. Ayman, G. M., Dincer, I. (2015). Experimental performance evaluation of a combined solar system to produce cooling and potable water. Solar Energy, Vol. 122, pp. 1066–1079.
  12. Assari, M. R., Tabrizi, H. B., Beik, A. J. G., Shamesri, K. (2022). Numerical study of water-air ejector using mixture and two-phase models. International Journal of Engineering, Vol. 35(2), pp. 307–318.
  13. Wang, Y., Morosuk, T., Yang, S., Cao, W. (2023). A high-efficiency multi-function system based on thermal desalination and absorption cycle for water, water-cooling or water-heating production. Energy Conversion and Management, Vol. 284, 116962.
  14. Su, B., Han, W., Jin, H. (2017). An innovative solar-powered absorption refrigeration system combined with liquid desiccant dehumidification for cooling and water. Energy Conversion and Management, Vol. 153, pp. 515–525.
  15. Sarevski, V. N., Sarevski, M. N. (2012). Characteristics of R718 thermocompression refrigerating / Heat pump systems with two-phase ejectors. In: International Refrigeration and Air Conditioning Conference at Purdue, 16–19.07.2012, West Lafayette, Indiana, USA, Art. No. 2218.
  16. Rahvard, A. J., Lakzian, E., Foroozesh, F., Khoshnevis, A. (2022). An applicable surface heating in a two-phase ejector refrigeration. European Physical Journal Plus, Vol. 137(2), 179.
  17. Sharapov, S. O., Arsenyev, V. M., Kozin, V. M. (2017). Application of jet thermal compression for increasing the efficiency of vacuum systems. IOP Conference Series: Materials Science and Engineering, Vol. 233, 012028.
  18. Sharapov, S., Husiev, D., Panchenko, V., Kozin, V., Baha, V. (2020). Analysis of the possibility of using R718 for a heat pump of a heating system based on a liquid-vapor ejector. Eastern-European Journal of Enterprise Technologies, Vol. 6(8(108)), pp. 39–44.
  19. Elmorsy, L., Morosuk, T., Tsatsaronis, G. (2022). Comparative exergoeconomic evaluation of integrated solar combined-cycle (ISCC) configurations. Renewable Energy, Vol. 185(C), pp. 680–691.
  20. Botamede, B. B., Salviano, L. O. (2023). Thermodynamic analysis of concentrated solar energy layouts integrated with combined power system. Applied Thermal Engineering, Vol. 229, 120618.
  21. Tashtoush, B., Songa, I., Morosuk, T. (2022). Exergoeconomic analysis of a variable area solar ejector refrigeration system under hot climatic conditions. Energies, Vol. 15(24), 9540.
  22. Szablowski, L, Morosuk, T. (2023). Advanced exergy analysis of adiabatic underwater compressed air energy storage system. Entropy, Vol. 25(1), 77.
  23. Szablowski, L., Krawczyk, P., Wolowicz, M. (2021). Exergy analysis of adiabatic liquid air energy storage (A-LAES) system based on Linde–Hampson cycle. Energies, Vol. 14(4), 945.
  24. Tsatsaronis, G. (2007). Application of Thermoeconomics to the Design and Synthesis of Energy Plants. Energy, Energy System Analysis and Optimization in Encyclopedia of Life Support Systems (ELSS) Developed under the Auspices of the UNESCO. EOLSS Publishers, Oxford, UK. Available online:
  25. Lazzaretto, A., Tsatsaronis, G. (2006). SPECO: A systematic and general methodology for calculating efficiencies and costs in thermal systems, Energy, Vol. 31(8–9), pp. 1257–1289.
  26. Guo, H., Xu, Y., Zhu, Y., Zhang, X., Yin, Z., Chen, H. (2021). Coupling properties of thermodynamics and economics of underwater compressed air energy storage systems with flexible heat exchanger model. Journal of Energy Storage, Vol. 43, 103198.

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