| 摘要 |
PROBLEM TO BE SOLVED: To perform easy estimation of operation efficiency of individual compressors without requiring any additional equipment for every compressor.SOLUTION: A data set selection unit 15 selects m (m>n) data set having the entire flow rate Qt kept constant or being increased as a target data set Dt from data sets 14A stored in a memory unit 14. An operation efficiency calculation unit 16 gets a multiple regression equation expressing an object variable number composed of the entire flow rate Qt with a predictor variable composed of power usage Wti on the basis of these target data sets Dt so as to calculate operation efficiency Ui of a compressor Ci composed of a partial regression coefficient (ai) of the multiple regression equation. |
