Evaluation of VRF system with multi indoor units by experimental study and simulation analysis

Kuniyasu Matsumoto, Keisuke Ohno, Kiyoshi Saito

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Due to worldwide demand for energy saving, many new technologies have been developed in the air conditioning field. VRF (Variable Refrigerant Flow) system is a recently developed air conditioning system which has some indoor units. There are a lot of control actuators in this system so it is difficult to find optimum operation condition to save energy. In this study in order to find the clue of conditions we construct numerical model of VRF systems and we compare to experimental data and the calculation results and we certain accuracy of model. By using simulation model, we analyze the influence of the ability of machinery and COP changing actuators' parameter. As a result, we made sure that the constructed simulation model could predict actual behaviour of systems. Particularly, in case of light thermal load circumstance air-conditioners continue inefficient intermittent running, we analyze the cause of this condition and we make clear the clue of improvement condition.

    Original languageEnglish
    Title of host publication24th IIR International Congress of Refrigeration, ICR 2015
    PublisherInternational Institute of Refrigeration
    Pages3218-3225
    Number of pages8
    ISBN (Electronic)9782362150128
    DOIs
    Publication statusPublished - 2015
    Event24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan
    Duration: 2015 Aug 162015 Aug 22

    Other

    Other24th IIR International Congress of Refrigeration, ICR 2015
    CountryJapan
    CityYokohama
    Period15/8/1615/8/22

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    ASJC Scopus subject areas

    • Control and Systems Engineering
    • Electrical and Electronic Engineering
    • Mechanical Engineering
    • Condensed Matter Physics

    Cite this

    Matsumoto, K., Ohno, K., & Saito, K. (2015). Evaluation of VRF system with multi indoor units by experimental study and simulation analysis. In 24th IIR International Congress of Refrigeration, ICR 2015 (pp. 3218-3225). International Institute of Refrigeration. https://doi.org/10.18462/iir.icr.2015.0051