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Advanced Method of Variable Refrigerant Flow (VRF) Systems Designing to Forecast Onsite Operation—Part 2: Phenomenological Simulation to Recoup Refrigeration Energy

Author

Listed:
  • Mykola Radchenko

    (Machinebuilding Institute, Admiral Makarov National University of Shipbuilding, Heroes of Ukraine Avenue 9, 54025 Mykolayiv, Ukraine)

  • Andrii Radchenko

    (Machinebuilding Institute, Admiral Makarov National University of Shipbuilding, Heroes of Ukraine Avenue 9, 54025 Mykolayiv, Ukraine)

  • Eugeniy Trushliakov

    (Department of Air Conditioning and Refrigeration, Admiral Makarov National University of Shipbuilding, Heroes of Ukraine Avenue 9, 54025 Mykolayiv, Ukraine)

  • Hanna Koshlak

    (Department of Sanitary Engineering, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland)

  • Roman Radchenko

    (Machinebuilding Institute, Admiral Makarov National University of Shipbuilding, Heroes of Ukraine Avenue 9, 54025 Mykolayiv, Ukraine)

Abstract

This paper focuses on the application of speed-regulated compressors (SRCs) to cover changeable heat loads with high efficiency in conventional air conditioning systems (ACS) as well as in the more advanced variable refrigerant flow (VRF)-type outdoor and indoor ACS. In reality, an SRC is an oversized compressor, although it can operate efficiently at part loads. The higher the level of regulated loads (LRL) of the SRC, the more the compressor is oversized. It is preferable to reduce the size of the SRC by covering the peak loads and recouping the excessive refrigeration energy reserved at decreased actual loads within the range of regulated loads. Therefore, the range of changeable loads is chosen as the object to be narrowed by using the reserved refrigeration capacity. Thus, the general fundamental approach of dividing the overall heat load range of the ACS into the ranges with changeable and unchangeable loads, as previously developed by the authors, is applied for the range of primary changeable loads. Due to this innovative step, the principle of two-stage outdoor air conditioning according to changeable and unchangeable loads, also proposed by the authors, has been extended over the range of primary changeable loads to reduce the level of refrigeration capacity regulation and SRC size. To realize this, part of the changeable load range is offset by the reserved refrigeration capacity, leading to a reduction in the changeable load range and the SRC size by approximately 20% for temperate climatic conditions.

Suggested Citation

  • Mykola Radchenko & Andrii Radchenko & Eugeniy Trushliakov & Hanna Koshlak & Roman Radchenko, 2023. "Advanced Method of Variable Refrigerant Flow (VRF) Systems Designing to Forecast Onsite Operation—Part 2: Phenomenological Simulation to Recoup Refrigeration Energy," Energies, MDPI, vol. 16(4), pages 1-17, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:4:p:1922-:d:1069200
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    References listed on IDEAS

    as
    1. Zongming Yang & Mykola Radchenko & Andrii Radchenko & Dariusz Mikielewicz & Roman Radchenko, 2022. "Gas Turbine Intake Air Hybrid Cooling Systems and a New Approach to Their Rational Designing," Energies, MDPI, vol. 15(4), pages 1-18, February.
    2. Waldemar Kuczyński & Marcin Kruzel & Katarzyna Chliszcz, 2022. "Regression Model of Dynamic Pulse Instabilities during Condensation of Zeotropic and Azeotropic Refrigerant Mixtures R404A, R448A and R507A in Minichannels," Energies, MDPI, vol. 15(5), pages 1-24, February.
    3. Andrii Radchenko & Mykola Radchenko & Hanna Koshlak & Roman Radchenko & Serhiy Forduy, 2022. "Enhancing the Efficiency of Integrated Energy Systems by the Redistribution of Heat Based on Monitoring Data," Energies, MDPI, vol. 15(22), pages 1-18, November.
    4. Waldemar Kuczyński & Marcin Kruzel & Katarzyna Chliszcz, 2022. "A Regressive Model for Periodic Dynamic Instabilities during Condensation of R1234yf and R1234ze Refrigerants," Energies, MDPI, vol. 15(6), pages 1-14, March.
    5. Andrii Radchenko & Mykola Radchenko & Dariusz Mikielewicz & Anatoliy Pavlenko & Roman Radchenko & Serhiy Forduy, 2022. "Energy Saving in Trigeneration Plant for Food Industries," Energies, MDPI, vol. 15(3), pages 1-14, February.
    6. Zongming Yang & Victoria Kornienko & Mykola Radchenko & Andrii Radchenko & Roman Radchenko, 2022. "Research of Exhaust Gas Boiler Heat Exchange Surfaces with Reduced Corrosion When Water-Fuel Emulsion Combustion," Sustainability, MDPI, vol. 14(19), pages 1-21, September.
    7. Zongming Yang & Roman Radchenko & Mykola Radchenko & Andrii Radchenko & Victoria Kornienko, 2022. "Cooling Potential of Ship Engine Intake Air Cooling and Its Realization on the Route Line," Sustainability, MDPI, vol. 14(22), pages 1-15, November.
    8. Zongming Yang & Volodymyr Korobko & Mykola Radchenko & Roman Radchenko, 2022. "Improving Thermoacoustic Low-Temperature Heat Recovery Systems," Sustainability, MDPI, vol. 14(19), pages 1-16, September.
    9. Bai, Zhang & Liu, Qibin & Gong, Liang & Lei, Jing, 2019. "Application of a mid-/low-temperature solar thermochemical technology in the distributed energy system with cooling, heating and power production," Applied Energy, Elsevier, vol. 253(C), pages 1-1.
    10. Freschi, F. & Giaccone, L. & Lazzeroni, P. & Repetto, M., 2013. "Economic and environmental analysis of a trigeneration system for food-industry: A case study," Applied Energy, Elsevier, vol. 107(C), pages 157-172.
    11. Anatoliy M. Pavlenko & Hanna Koshlak, 2021. "Application of Thermal and Cavitation Effects for Heat and Mass Transfer Process Intensification in Multicomponent Liquid Media," Energies, MDPI, vol. 14(23), pages 1-19, November.
    12. Chen, Guangming & Ierin, Volodymyr & Volovyk, Oleksii & Shestopalov, Kostyantyn, 2019. "An improved cascade mechanical compression–ejector cooling cycle," Energy, Elsevier, vol. 170(C), pages 459-470.
    13. Marcin Kruzel & Tadeusz Bohdal & Krzysztof Dutkowski & Mykola Radchenko, 2022. "The Effect of Microencapsulated PCM Slurry Coolant on the Efficiency of a Shell and Tube Heat Exchanger," Energies, MDPI, vol. 15(14), pages 1-11, July.
    14. Zidong Yu & Serhii Shevchenko & Mykola Radchenko & Oleksandr Shevchenko & Andrii Radchenko, 2022. "Methodology of Designing Sealing Systems for Highly Loaded Rotary Machines," Sustainability, MDPI, vol. 14(23), pages 1-17, November.
    15. Popli, Sahil & Rodgers, Peter & Eveloy, Valerie, 2012. "Trigeneration scheme for energy efficiency enhancement in a natural gas processing plant through turbine exhaust gas waste heat utilization," Applied Energy, Elsevier, vol. 93(C), pages 624-636.
    16. Yusung Lee & Woohyun Kim, 2021. "Development of an Optimal Start Control Strategy for a Variable Refrigerant Flow (VRF) System," Energies, MDPI, vol. 14(2), pages 1-17, January.
    17. Marcin Kruzel & Tadeusz Bohdal & Krzysztof Dutkowski & Waldemar Kuczyński & Katarzyna Chliszcz, 2022. "Current Research Trends in the Process of Condensation of Cooling Zeotropic Mixtures in Compact Condensers," Energies, MDPI, vol. 15(6), pages 1-16, March.
    18. Wajs, Jan & Mikielewicz, Dariusz & Jakubowska, Blanka, 2018. "Performance of the domestic micro ORC equipped with the shell-and-tube condenser with minichannels," Energy, Elsevier, vol. 157(C), pages 853-861.
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