Patent ID: 8572995

Claim:
A refrigeration system, comprising: a refrigerant circuit ( 20 ) configured to perform a refrigeration cycle and including a compressor ( 21 ) having a variable capacity, a plurality of evaporators ( 27 ), and expansion mechanisms ( 26 ) respectively associated with the evaporators ( 27 ); a capacity adjustment unit ( 6 ) configured to adjust the capacity of the compressor ( 21 ) such that an evaporation temperature Te of a refrigerant circulating in the refrigerant circuit ( 20 ) approaches a predetermined set temperature Tem; a pressure-reduction-amount adjustment unit ( 9 ) configured to adjust an amount of pressure reduction of a refrigerant passing through each of the expansion mechanisms ( 26 ) such that a refrigerant outlet superheat degree SH of an associated one of the evaporators ( 27 ) approaches a target superheat degree SHs determined based on an amount of heat exchange necessary for the evaporator ( 27 ); and a change unit ( 5 ) configured to change the set temperature Tem to a value larger than a current value when a lowest one of target superheat degrees SHs determined for the respective evaporators ( 27 ) is higher than a predetermined value SHt.