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1. (WO2018163402) AIR CONDITIONER PERFORMANCE DIAGNOSIS DEVICE AND DIAGNOSIS METHOD

Pub. No.:    WO/2018/163402    International Application No.:    PCT/JP2017/009704
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Sat Mar 11 00:59:59 CET 2017
IPC: F24F 11/02
Applicants: HITACHI, LTD.
株式会社日立製作所
Inventors: KOKUGAN Yoko
國眼 陽子
KUSUMOTO Hiroshi
楠本 寛
FUJII Tatsuo
藤居 達郎
Title: AIR CONDITIONER PERFORMANCE DIAGNOSIS DEVICE AND DIAGNOSIS METHOD
Abstract:
An air conditioner performance diagnosis device equipped with a data collection unit that collects and records air conditioner operational data, and a device characteristic database, which is a data group encompassing operation conditions satisfying the specifications of the air conditioner, and further equipped with a reference data creation unit that uses the device characteristic database and the operational data possessed by the data collection unit to calculate individual characteristic curve data, and a performance evaluation unit that evaluates the performance of the air conditioner by comparing a portion of the operational data possessed by the data collection unit and the individual characteristic curve data. The individual characteristic curve data is data that is corrected with respect to the device characteristic database so as to correspond to the operational data possessed by the data collection unit. Thus, a deterioration in the performance of the air conditioner can be detected and a clear determination can be made as to whether maintenance work for the air conditioner is necessary, regardless of the size of the air-conditioning load.