Refrigerant control system and cooling system manufacturing method

A refrigerant control system and a cooling system are provided, which can increase the refrigerant storage capacity in a compact storage part. The refrigerant control system includes: a storage section 30 for storing refrigerant, a first sub-pipe 71a connected to the outlet side pipe 62a of the first circulating flow path 61, and a first sub-pipe 71a connected to the first circulating flow path 61 and its inlet side pipe 62b. The two sub-pipes 71b are connected to a third sub-pipe 71c of the inlet-side pipe 62b, and are formed so that the thermal energy of the third pipe 71c is lower than that of the outlet-side pipe 62a, and can be transferred to the first refrigerant in the storage part. A first on-off valve 72a is provided in the first sub-pipe 71a, a second on-off valve 72b is provided in the second sub-pipe 71b, a third on-off valve 72c is provided in the third sub-pipe 71c, and a switch control unit, The opening and closing of the first on-off valve 72a, the second on-off valve 72b, and the third on-off valve 72c can be controlled according to the temperature setting value of the second refrigerant. And the third on-off valve 72c. And the third on-off valve 72c.

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