Patent ID: 11971203
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 29:
30. A non-transitory computer-readable recording medium storing a program for causing a refrigerant amount determining device to:
acquire operation data of an air conditioning system;
calculate a refrigerant amount index value from the operation data acquired;
input at least one of the acquired operation data or the calculated refrigerant amount index value into a correction model to obtain information regarding correction of the refrigerant amount index value, wherein the information regarding correction of the refrigerant amount index value is obtained by any one of:
(i) calculating, as the information regarding correction of the refrigerant amount index value, an inner product of the calculated refrigerant amount index value at a plurality of dates and a refrigerant amount index value at the same plurality of dates in a previous year, by inputting both the refrigerant amount index values into the correction model;
(ii) inputting second operation data that is included in the acquired operation data into the correction_model to obtain a predicted value of a range of a refrigerant amount index value, the second operation data being at least partially different from first operation data that is included in the acquired operation data and is used for calculating the refrigerant amount index value, or the second operation data being at least partially identical to the first operation data, and determining, as the information regarding correction of the refrigerant amount index value. an evaluation result whether the calculated refrigerant amount index value is within the predicted value of the range of the refrigerant amount index value; and
(iii) inputting the second operation data into the correction model to obtain a predicted value of a refrigerant amount index value, and obtaining, as the information regarding correction of the refrigerant amount index value, a difference or ratio between the calculated refrigerant amount index value and the predicted value of the refrigerant amount index value;
output, based on the corrected refrigerant amount index value, at least one selected from a group including: presence or absence of leakage of a refrigerant; degree of the leakage of the refrigerant; a ratio of a leakage amount to an appropriate amount of the refrigerant; a refrigerant amount: and the difference or ratio between the calculated refrigerant amount index value and the predicted value of the refrigerant amount index value, regarding the air conditioning system; and
increase or decrease an acquisition interval of the operation data according to a number of pieces of the operation data.