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Refrigeration system and apparatus for operation at low loads

  • US 3,191,396 A
  • Filed: 01/14/1963
  • Issued: 06/29/1965
  • Est. Priority Date: 01/14/1963
  • Status: Expired due to Term
First Claim
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4. THE METHOD OF OPERATING A REFRIGERATION MACHINE INCLUDING A COMPRESSOR, A CONDENSER, A COOLER WITH TUBING THEREIN AND A RECEIVER STORING LIQUID REFRIGERANT CONNECTED TO THE COOLER, UNDER LOW LOAD CONDITIONS WHEN THE COMPRESSOR IS INOPERATIVE COMPRISING THE STEPS OF:

  • (A) INCREASING THE PRESSURE IN THE RECEIVER ABOVE THE PRESSURE IN THE COOLER SUFFICIENT TO INDUCE LIQUID PASSAGE INTO THE COOLER, (B) SUPPLYING LIQUID REFRIGERANT FROM THE RECEIVER TO THE COOLER IN AN AMOUNT RAISING THE LIQUID IN THE COOLER TO SUBMERGE THE TUBING THEREIN, (C) EVAPORATING LIQUID REFRIGERANT IN THE COOLER BY PASSING A FLUID MEDIUM TO BE COOLED THROUGH THE TUBING OF THE COOLER, (D) CONDUCTING VAPORS FROM THE COOLER DIRECTLY INTO THE CONDENSER, (E) CONDENSING THE VAPORS IN THE CONDENSER BY PASSING A FLUID COOLING MEDIUM THROUGH THE CONDENSER, (F) RETURNING CONDENSED LIQUID REFRIGERANT FROM THE CONDENSER TO THE COOLER, AND (G) RETRANSFERRING THE LIQUID REFRIGERANT SUPPLIED TO THE COOLER BACK INTO THE RECEIVER BEFORE RESUMING NORMAL OPERATION OF SAID REFRIGERATION MACHINE EMPLOYING THE COMPRESSOR.

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