Expander driven motor for auxiliary machinery

A vapor compression system comprising:

• a compression device to compress a refrigerant to a high pressure;
• a heat rejecting heat exchanger for cooling said refrigerant;
• an expansion device for reducing said refrigerant to a low pressure;
• a heat accepting heat exchanger for evaporating said refrigerant;
• a heat pump to reverse flow of said refrigerant;
• an expansion motor powered by expansion of said refrigerant from said high pressure to said low pressure;
• and
• an auxiliary machinery driven by said expansion motor.

A vapor compression system comprising:

• a compression device to compress a refrigerant to a high pressure;
• a heat rejecting heat exchanger for cooling said refrigerant;
• an expansion device for reducing said refrigerant to a low pressure;
• a heat accepting heat exchanger for evaporating said refrigerant;
• and
• a water pump coupled to said expansion device and powered by the expansion of said refrigerant from said high pressure to said low pressure.

A vapor compression system comprising:

• a compression device to compress a refrigerant to a high pressure;
• a heat rejecting heat exchanger for cooling said refrigerant;
• an expansion device for reducing said refrigerant to a low pressure;
• a heat accepting heat exchanger for evaporating said refrigerant;
• and
• an oil pump coupled to said expansion device and powered by the expansion of said refrigerant from said high pressure to said low pressure.

A vapor compression system comprising:

• a compression device to compress a refrigerant to a high pressure;
• a heat rejecting heat exchanger for cooling said refrigerant;
• an expansion device for reducing said refrigerant to a low pressure;
• a heat accepting heat exchanger for evaporating said refrigerant;
• an auxiliary machinery coupled to said expansion device and powered by the expansion of said refrigerant from said high pressure to said low pressure;
• and
• an additional compression device, an additional heal rejecting heat exchanger, an additional expansion device, and an additional heat accepting heat exchanger.