Refrigeration cycle apparatus

A refrigeration cycle apparatus comprising:

• a first unit including a compressor configured to compress a refrigerant and an expansion mechanism configured to decompress the refrigerant, the first unit configuring a vapor compression refrigeration cycle in which the refrigerant circulates;
• and
• an adsorbent configured to adsorb and desorb the refrigerant circulating in the first unit, wherein
• the first unit further includes
• a high-pressure region in which the refrigerant that has been compressed by the compressor and that has not yet been decompressed by the expansion mechanism flows, and
• a low-pressure region in which the refrigerant that has been decompressed by the expansion mechanism and that has not yet been compressed by the compressor flows, and
• the first unit is configured to
• in a first condition in which the refrigerant in the high-pressure region has a pressure lower than or equal to a critical pressure of the refrigerant, and the refrigerant in the high-pressure region has a temperature exceeding a saturation temperature of the refrigerant corresponding to the pressure of the refrigerant in the high-pressure region, perform the vapor compression refrigeration cycle, or
• in a second condition in which the refrigerant in the low-pressure region has a pressure lower than a saturation pressure corresponding to an evaporation temperature of the refrigerant in a case where the adsorbent neither adsorbs nor desorbs the refrigerant, perform the vapor compression refrigeration cycle.

A refrigeration cycle apparatus comprising:

• a first unit including a compressor configured to compress a refrigerant and an expansion mechanism configured to decompress the refrigerant, the first unit configuring a vapor compression refrigeration cycle in which the refrigerant circulates;
• and
• an adsorbent configured to adsorb and desorb the refrigerant circulating in the first unit, wherein
• the first unit further includes
• a high-pressure region in which the refrigerant that has been compressed by the compressor and that has not yet been decompressed by the expansion mechanism flows, and
• a low-pressure region in which the refrigerant that has been decompressed by the expansion mechanism and that has not yet been compressed by the compressor flows, and
• the first unit is configured to
• in a first condition in which the refrigerant in the high-pressure region has a pressure lower than a saturation pressure corresponding to a condensation temperature of the refrigerant in a case where the adsorbent neither adsorbs nor desorbs the refrigerant perform the vapor compression refrigeration cycle, or
• in a second condition in which the refrigerant in the low-pressure region has a pressure lower than a saturation pressure corresponding to an evaporation temperature of the refrigerant in a case where the adsorbent neither adsorbs nor desorbs the refrigerant perform the vapor compression refrigeration cycle.