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IIR document

DESIGN INNOVATION IN SCREW COMPRESSOR WATER CHILLERS.

Author(s) : DILLENBECK W. H.

Summary

THE AUTHOR DESCRIBES A < FOURTH GENERATION > OF WATER CHILLERS USING SEVERAL SCREW HERMETIC COMPRESSORS IN PARALLEL. VAPOUR INJECTION, THE CONTROL OF THE LIQUID LEVEL IN THE FLOODED EVAPORATOR, THE IMPROVEMENT OF OIL CIRCUITS AND THE MICROPROCESSOR INTEGRAL CONTROL ARE DISCUSSED. THE UTILIZATION OF A TWO-STAGE CYCLE, WITH AN ECONOMIZER AND INTERMEDIATE PRESSURE VAPOUR INJECTION, IMPROVES THE EFFICIENCY AND THE REFRIGERATING CAPACITY. THE OPENING OF THE BALL VALVE OF THE ECONOMIZER IS CONTROLLED BY THE LEVEL OF LIQUID IN THE FLOODED EVAPORATOR. THIS TECHNICAL SOLUTION AVOIDS ENERGY LOSSES RESULTING FROM A GAS BY-PASS.

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Pages: 9 p.

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Details

  • Original title: DESIGN INNOVATION IN SCREW COMPRESSOR WATER CHILLERS.
  • Record ID : 1992-1622
  • Languages: English
  • Publication date: 1990/09/24
  • Source: Source: C. R. Réun. Dresde, IIF/Proc. Dresd. Meet., IIR
    1990-4; 155-163; 9 fig.; 1 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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