Patent ID: 7836721

Claim:
A cooling system for the production of beverages comprising a first heat-storage tank for storing water, a first refrigerator connected to said first heat-storage tank, for storing heat in the water in said first heat-storage tank, a first circulating passage circularly extending from the lower part of said first heat-storage tank to the upper part of said first heat-storage tank, wherein a first thermal load is disposed therein, a second circulating passage circularly extending from the lower part of said first heat-storage tank to the upper part of said first heat-storage tank, wherein a second thermal load thermally higher than said first thermal load is disposed therein, a second heat-storage tank disposed in said second circulating passage at a position between said second thermal load and said first heat-storage tank, wherein said second circulating passage supplies water to the upper part of the second heat-storage tank and supplies the water from the upper part of said second heat-storage tank to the upper part of said first heat-storage tank, and a second refrigerator group, which includes a plurality of refrigerators, disposed in said second circulating passage at a position between said second heat-storage tank and said first heat-storage tank, for storing heat in water fed from the upper part of said second heat-storage tank, wherein a cooling output temperature of part or all of refrigerators constituting said second refrigerator group are set to be higher than that of said first refrigerator, wherein when the requirement for the first thermal load is high, a first number of the refrigerators in the second refrigerator group are used, and when the requirement for the second thermal load is high, a second number, which is bigger than the first number, of the refrigerators in the second refrigerator group are used, and; a sub-circulating passage circularly extending from the upper part of said first heat-storage tank to the lower part of said first heat-storage tank, wherein said second refrigerator group is disposed in said sub-circulating passage.