Analyse numérique des caractéristiques de régulation des systèmes de pompe à chaleur à débit de frigorigène variable en se concentrant sur l'effet du détendeur et du ventilateur intérieur

Kuniyasu Matsumoto, Keisuke Ohno, Seiichi Yamaguchi, Kiyoshi Saito

    研究成果: Article

    3 引用 (Scopus)

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    In commercial and office buildings, it has recently become popular to install variable refrigerant flow (VRF) compression-type heat pump systems. In particular, VRF systems with multiple indoor units are being installed in large buildings because such systems have large adjustment capacity. On the other hand, because users of VRF systems can freely choose the number of indoor units to install and can turn indoor units on and off independently, operating conditions are not predictable and it is difficult to find adequate control parameters under wide changes in load. With this background, we are developing a new numerical simulation model based on the laws of physics. Because this model can easily add and delete system elements, we believe that it will be useful for VRF system analysis. In this study, we utilize a numerical simulation model to evaluate both steady and unsteady conditions in VRF systems. In this paper, we focus on the connection between manipulated variables (the expansion valve's open pulse and fan rotational speed) and controlled variables (supply air temperature and the degree of superheating at the evaporator outlet). Moreover, we compare the difference between the performance of a single indoor unit and that of multiple indoor units operating simultaneously. As a result, we can evaluate the dynamic characteristics of manipulated variables and the effect of changing the number of active indoor units, each of which has their own VRF characteristics.

    寄稿の翻訳されたタイトルNumerical analysis of control characteristics of variable refrigerant flow heat-pump systems focusing on the effect of expansion valve and indoor fan
    元の言語French
    ページ(範囲)440-452
    ページ数13
    ジャーナルInternational Journal of Refrigeration
    99
    DOI
    出版物ステータスPublished - 2019 3 1

    ASJC Scopus subject areas

    • Building and Construction
    • Mechanical Engineering

    フィンガープリント Analyse numérique des caractéristiques de régulation des systèmes de pompe à chaleur à débit de frigorigène variable en se concentrant sur l'effet du détendeur et du ventilateur intérieur' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

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