| 摘要 |
PROBLEM TO BE SOLVED: To determine refrigerant leakage in a refrigerating cycle device with high accuracy. SOLUTION: The difference▵d between sampling data X(t) of detected concentration of carbon dioxide and an estimated value C(t) of the concentration of carbon dioxide in a compartment under a condition that a refrigerant (carbon dioxide) does not leak from the refrigerating cycle device, is found, and the refrigerant leakage is determined on the basis of the comparison of the difference▵d with a reference value S. According to this embodiment, the refrigerant leakage can be determined with high accuracy in comparison with a case when the refrigerant leakage is determined on the basis of the comparison of the sampling data X(t) of the detected concentration with the reference value. The reference value S1 in executing the inside air circulation mode is more than a reference value S2 in executing the outside air introduction mode. COPYRIGHT: (C)2008,JPO&INPIT |
