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THE USE OF AN EJECTOR AS A REFRIGERANT EXPANDER.

Author(s) : KORNHAUSER A. A.

Summary

ONE OF THE THERMODYAMIC LOSSES IN THE VAPOUR-COMPRESSION REFRIGERATION CYCLE IS THE THROTTLING PROCESS IN THE EXPANSION VALVE. IT WORK IS EXTRACTED FROM THE REFRIGERANT DURING THE EXPANSION PROCESS, THE EFFICIENCY OF THE CYCLE IS SIGNIFICANTLY IMPROVED. IT IS PROPOSED THAT THE HIGH-PRESSURE REFRIGERANT BE USED AS THE MOTIVE FLUID OF A JET EJECTOR. INSTEAD OF EXTRACTING MECHANICAL WORK FROM THE EXPANDING REFRIGERANT, ITS KINETIC ENERGY IS USED TO PARTIALLY COMPRESS THE SATURATED VAPOUR LEAVING THE EVAPORATOR. A FIRST-ORDER ANALYSIS OF THE CYCLE PERFORMANCE SHOWS SIGNIFICANT INCREASE IN COP AND DECREASE IN COMPRESSOR DISPLACEMENT RELATIVE TO A STANDARD VAPOUR-COMPRESSION CYCLE.

Details

  • Original title: THE USE OF AN EJECTOR AS A REFRIGERANT EXPANDER.
  • Record ID : 1991-1132
  • Languages: English
  • Publication date: 1990/07/17
  • Source: Source: USNC-IIR/Proc. 1990 Refrig. Conf., Purdue Univ./ASHRAE, Purdue CFC Conf./Purdue Univ., Ray W. Herrick Lab., Sch. mech. Eng.
    10-19; 6 fig.; 1 tabl.; 13 ref.

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