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Capacity modulation of an inverter-driven multi-air conditioner using electronic expansion valves

Author

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  • Choi, J.M
  • Kim, Y.C

Abstract

An inverter-driven multi-air conditioner provides the benefits of comfort, energy conservation and easy maintenance. Recently, the multi-air conditioner has been employed in small and medium-sized buildings. However, the performance data and control algorithm for multi-air conditioners are limited in literature due to complicated system parameters and operating conditions. In the present study, the performance of an inverter-driven multi-air conditioner having two indoor units with electronic expansion valves (EEV) was measured by varying indoor loads, EEV opening, and compressor speed. Based on the experimental results, the operating characteristics and capacity modulation of the inverter-driven multi-air conditioner are discussed. As a result, it is suggested that the superheats for both indoor units have to be maintained around 4oC by utilizing the EEVs in this system, and consequently, the compressor speed needs to be adjusted to provide optimum cooling capacity for each indoor unit.

Suggested Citation

  • Choi, J.M & Kim, Y.C, 2003. "Capacity modulation of an inverter-driven multi-air conditioner using electronic expansion valves," Energy, Elsevier, vol. 28(2), pages 141-155.
    • Handle: RePEc:eee:energy:v:28:y:2003:i:2:p:141-155
    DOI: 10.1016/S0360-5442(02)00113-5
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    Citations

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    Cited by:

    1. Joowook Kim & Doosam Song & Suyeon Kim & Sohyun Park & Youngjin Choi & Hyunwoo Lim, 2020. "Energy-Saving Potential of Extending Temperature Set-Points in a VRF Air-Conditioned Building," Energies, MDPI, vol. 13(9), pages 1-17, May.
    2. Sanaye, Sepehr & Chahartaghi, Mahmood, 2010. "Thermal modeling and operating tests for the gas engine-driven heat pump systems," Energy, Elsevier, vol. 35(1), pages 351-363.
    3. Fabrizio, Enrico & Seguro, Federico & Filippi, Marco, 2014. "Integrated HVAC and DHW production systems for Zero Energy Buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 40(C), pages 515-541.
    4. Carsten Palkowski & Andreas Zottl & Ivan Malenkovic & Anne Simo, 2019. "Fixing Efficiency Values by Unfixing Compressor Speed: Dynamic Test Method for Heat Pumps," Energies, MDPI, vol. 12(6), pages 1-16, March.
    5. Elgendy, E. & Schmidt, J., 2010. "Experimental study of gas engine driven air to water heat pump in cooling mode," Energy, Elsevier, vol. 35(6), pages 2461-2467.
    6. Hu, Maomao & Xiao, Fu, 2018. "Price-responsive model-based optimal demand response control of inverter air conditioners using genetic algorithm," Applied Energy, Elsevier, vol. 219(C), pages 151-164.
    7. Meissner, José W. & Abadie, Marc O. & Moura, Luís M. & Mendonça, Kátia C. & Mendes, Nathan, 2014. "Performance curves of room air conditioners for building energy simulation tools," Applied Energy, Elsevier, vol. 129(C), pages 243-252.
    8. Choi, Jong Min & Park, Yong-Jung & Kang, Shin-Hyung, 2014. "Temperature distribution and performance of ground-coupled multi-heat pump systems for a greenhouse," Renewable Energy, Elsevier, vol. 65(C), pages 49-55.
    9. Abdul Mujeebu, Muhammad & Alshamrani, Othman Subhi, 2016. "Prospects of energy conservation and management in buildings – The Saudi Arabian scenario versus global trends," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1647-1663.

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