CO2 refrigerant system with tandem compressors, expander and economizer

CO2 refrigerant system with tandem compressors, expander and economizer

  • CN 101,568,770 A
  • Filed: 12/26/2006
  • Published: 10/28/2009
  • Est. Priority Date: 12/26/2006
  • Status: Active Application
First Claim
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1. refrigerant system comprises:

  • At least two compressors of bunchiness axle operation, described compressor compresses cold-producing medium also is delivered to this cold-producing medium first heat exchanger in downstream, flow through the first passage of economizer heat exchanger from the cold-producing medium of described first heat exchanger, flow to expander then, cold-producing medium expands in described expander, described expander reclaims part energy at least from the expansion process of described cold-producing medium, and the energy of described recovery is used for assisting to drive at least one of a plurality of refrigerant system component;

    Place second heat exchanger in described expander downstream, flow through described second heat exchanger, be back to described at least two compressors then from the cold-producing medium of described expander;

    AndThe part cold-producing medium of the position shunting in described expander, this part cold-producing medium is in the demi-inflation at least of this position, this part cold-producing medium flows through the second channel of described economizer heat exchanger with the cold-producing medium in the cooling main refrigerant circuit, and the part cold-producing medium of described shunting is back at least one in described at least two compressors then.

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