| 摘要 |
A refrigeration and air conditioning device (100, 200) has a compressor (2), a condenser (3), a throttle device (4), and an evaporator (5) and has a refrigeration cycle formed by connecting the above-mentioned elements by refrigerant piping. In the refrigeration and air conditioning device (100, 200), a non-azeotropic refrigerant mixture is adopted as the refrigerant circulated in the refrigerant cycle. The refrigeration and air conditioning device (100, 200) has: operating condition detection means (11-14) for detecting the pressure of the refrigerant in the compressor (2), the temperature of the refrigerant in the compressor (2), and the rotational speed of the compressor (2); an output detection means (15) for detecting the output of the compressor (2); and a composition detection means (20) for calculating the correlation between the pressure of the refrigerant in the compressor, the temperature of the refrigerant in the compressor, the rotational speed of the compressor (2), the output of the compressor (2), and the composition of the refrigerant and holding data representing the correlation. The composition detection means (20) calculates the composition of the refrigerant, which is circulated in the refrigeration cycle, on the basis of the result of detection by the operating condition detection means (11-14), the result of detection by the output detection means (15), and the data representing the correlation. |
