A Study on Regression Modelling Methods for Heat Source Systems and Effects of Performance Changes on the Optimum Operations

  • Saito Masaaki
    Infrastructure Systems Research and Development Center, Toshiba Infrastructure Systems & Solutions Corporation
  • Kubo Yuuki
    Social Systems Division, Toshiba Infrastructure Systems & Solutions Corporation
  • Hanada Yuichi
    Social Systems Division, Toshiba Infrastructure Systems & Solutions Corporation
  • Kinoshita Tomoyuki
    Social Systems Division, Toshiba Infrastructure Systems & Solutions Corporation
  • Yokokawa Katsuya
    Infrastructure Systems Research and Development Center, Toshiba Infrastructure Systems & Solutions Corporation

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Other Title
  • 熱源システムの回帰モデリング手法と性能変化が最適運用に与える影響の一考察
  • ネツゲン システム ノ カイキ モデリング シュホウ ト セイノウ ヘンカ ガ サイテキ ウンヨウ ニ アタエル エイキョウ ノ イチ コウサツ

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Abstract

<p>In order to operate heat source systems effectively, it is necessary to make clear their optimum operations which based on the actual performances of the equipment. In past study, the target is limited to a part of the system and also the study hasn't enough about the influence that the change of the actual performance on the optimal operation. Therefore, this paper propose regression modeling methods based on actual operation data for each component of heat source systems first. The model for refrigerators is secured versatility by applying piecewise linear regression method. Then, optimum operations including the start / stop of refrigerators are shown through numerical simulations using the proposed models. It showed that the optimum cooling water temperature and the start / stop changed due to the actual performance change of the refrigerators. Finally, this paper describes the test results applying the proposed method to actual machine controls, and 3.6% energy saving effect and the usefulness of the proposed method are verified.</p>

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