Performance evaluation device for centrifugal chiller

Abstract

Enhanced accuracy in performance evaluation of a centrifugal chiller is achieved. Provided is a performance evaluation device for a centrifugal chiller, which includes an input unit (101) that receives operating data of the centrifugal chiller; a data classifying unit (102) that acquires evaluated data to be subjected to performance evaluation from the operating data received by the input unit (101) and classifies the evaluated data into multiple groups on the basis of a preset classifying condition; a smoothing unit (103) that smoothes the evaluated data, for each of the groups classified by the data classifying unit (102), by using a predetermined calculation method set in advance so as to obtain an evaluated value; and an evaluation unit (104) that performs performance evaluation for each group by using the evaluated value obtained by the smoothing unit (103) and a reference evaluation value that is set in advance or calculated using the operating data.

Description

technical field [0001] The invention relates to a performance evaluation device of a turbo refrigerator. Background technique [0002] Conventionally, as a method for diagnosing the performance of a refrigerator used as a heat source for cooling and heating equipment such as a building, for example, a method disclosed in Japanese Patent Application Laid-Open No. 4-93567 is known. Japanese Unexamined Patent Publication No. 4-93567 discloses a performance diagnosis device for a refrigerator that inputs data of the input power of the refrigerator, the capacity of the refrigeration equipment, the inlet temperature of the cooling water, the flow rate of the cooling water, and the pressure of the condenser. Calculates the estimated value of the condenser pressure from the cooling characteristics of the refrigerator based on the data of the refrigerator input, and compares the estimated value of the estimated condenser pressure with the actual measured value of the input condenser ...

AI Technical Summary

Problems solved by technology

Japanese Unexamined Patent Publication No. 4-93567 discloses a performance diagnosis device for a refrigerator that inputs data of the input power of the refrigerator, the capacity of the refrigeration equipment, the inlet temperature of the cooling water, the flow rate of the cooling water, and the pressure of the condenser. The estimated value of the condenser pressure is calculated from the refrigeration characteristics of the refrigerator based on the data of the input refrigerator, and the estimated value of the estimated condenser pressure is compared with the actual measured value of the input condenser pressure to diagnose whether there is a performance degradation

[0003] However, in the method disclosed in Japanese Patent Application Laid-Open No. 4-93567, since the presence or absence of performance degradation is diagnosed using an instantaneous value, there is a risk of being vulnerable to Problems such as influence of measurement error, precision drop of diagnosis

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