Data center refrigeration system

A system, comprising:

• a pumping apparatus, comprising:
• a driver comprising a first driver chamber and a second driver chamber separated by a moveable driver barrier coupled to a mechanical link, wherein the driver is configured to:
• alternately expand and contract the first and second driver chambers in response to an alternating pressure differential of a gaseous first coolant between a first pressure and a second pressure of the first and second driver chambers, respectively;
• and
• produce a mechanical force from the alternating pressure differential;
• a pump mechanically coupled to the driver, wherein the pump is configured to pump a liquid first coolant in response to the mechanical force from the driver;
• and
• a compressor mechanically coupled to the driver, wherein the compressor is configured to pressurize a second coolant in response to the mechanical force from the driver;
• a first thermodynamic cycle driven by the pump, wherein the first thermodynamic cycle is configured to remove heat from a first fluid stream using the first coolant;
• and
• a second thermodynamic cycle driven by the compressor, wherein the second thermodynamic cycle is configured to remove heat from a second fluid stream using the second coolant.

A method, comprising:

• producing, by a driver of a pumping apparatus, an alternating mechanical force from an alternating pressure differential of a gaseous first coolant, wherein the driver comprises a first driver chamber and a second driver chamber separated by a moveable driver barrier coupled to a mechanical link, and wherein the first and second driver chambers alternately expand and contract in response to the alternating pressure differential of the gaseous first coolant between the first and second driver chambers;
• pumping, by a pump of the pumping apparatus and in response to the alternating mechanical force from the driver, a liquid first coolant in a first thermodynamic cycle to remove heat from a first fluid stream;
• and
• compressing, by a compressor of the pumping apparatus and in response to the alternating mechanical force from the driver, a second coolant in a second thermodynamic cycle to remove heat from a second fluid stream.