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RETHINKING THE SINGLE STAGE SYSTEM PHILOSOPHY.

Author(s) : GARTSHORE J., LAWSON S.

Type of article: Article

Summary

THE AUTHORS SUGGEST THAT SINGLESTAGE, SEMI-HERMETIC, SUCTION COOLED R22 COMPRESSORS CAN BE USED EFFICIENTLY AT HIGH PRESSURE RATIOS, EG FOR SUPERMARKET FROZEN CASES WITH EVAPORATION AT 235 K (-38 DEG C), IF THEY ARE FITTED WITH LIQUID INJECTION. THE INJECTION POINT SHOULD BE BETWEEN THE MOTOR PASSAGES AND THE SUCTION VALVES. CONTROL OF VARIABLE LIQUID INJECTION, BY SENSING DISCHARGE TEMPERATURE AT THE DISCHARGE VALVE, WOULD ALLOW COMPRESSORS TO OPERATE WITH FLOATING CONDENSING PRESSURE, THUS INCREASING EFFICIENCY IN LOWER AMBIENT CONDITIONS. MODERN ELECTRONIC SENSORS AND CONTROL METHODS MAKE THIS A PRACTICAL PROPOSITION. D.W.H.

Details

  • Original title: RETHINKING THE SINGLE STAGE SYSTEM PHILOSOPHY.
  • Record ID : 1991-0150
  • Languages: English
  • Publication date: 1990
  • Source: Source: Refrig. Air Cond.
    vol. 93; n. 1103; 1990.02; 17-18; 3 fig.
  • Document available for consultation in the library of the IIR headquarters only.

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