Patent ID: 6959556

Claim:
A Stirling refrigeration system, comprising one cooling-water pump and at least two Stirling refrigeration units, each Stirling refrigeration unit having: a compression unit for compressing a working gas; an expansion unit for expanding said working gas compressed by said compression unit to lower the temperature of said working gas to cool a cold head; a water-cooling unit for cooling said working gas that has risen in temperature in said compression unit with cooling water, said water-cooling unit adapted to exchange heat with the atmosphere in a radiator; and a WGE heat exchanger for effecting heat exchange between said compressed working gas and said cooling water for cooling said working gas, wherein said working gas is circulated between said compression unit and said expansion unit to cool a secondary refrigerant, said WGE heat exchanger and said radiator (heat exchanger-radiator assembly) of a respective Stirling refrigeration unit are connected to a cooling-water circuit such that said cooling water circulates said heat exchange-radiator assemblies in turn, and said one cooling water pump for circulating said cooling water through all of said WGE heat exchangers and all radiators connected in series in said cooling-water circuit.