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A STUDY OF THE SUBCOOLED FLOW REGION OF A CAPILLARY TUBE-SUCTION LINE HEAT EXCHANGER.

Author(s) : PATE M. B., TREE D. R.

Summary

A CAPILLARY TUBE-SUCTION LINE HEAT EXCHANGER WAS INSTRUMENTED FOR PRESSURES, WALL TEMPERATURES AND SUCTION-LINE FLUID TEMPERATURE ALONG WITH FLUID MASS FLOW RATES. A STEADY STATE MODEL WAS DEVELOPED FOR THE SUBCOOLED FLOW REGION. THIS MODEL WAS COMPLICATED BY THE FACT THAT HEAT WAS LOST FROM THE HEAT EXCHANGER WALL TO THE SURROUNDINGS. THE MODEL, COMPARED SATISFACTORILY WITH THE EXPERIMENTAL DATA, WAS SHOWN TO BE VERY SENSITIVE TO ERRORS IN THE INITIAL CONDITIONS AT THE INLET DUE TO THE SMALL FILM TEMPERATURE DROPS ON THE SUCTION SIDE AND DUE TO THE PROPAGATION NATURE OF THE SOLUTION. IT WAS ALSO VERY SENSITIVE TO WALL HEAT LOSSES AND TO THE HEAT TRANSFER COEFFICIENT ON THE SUCTION LINE SIDE. A COMPARISON WITH SEVERAL NUMERICAL METHODS SHOWED THAT THE IMPLICIT METHOD WAS THE MOST ACCURATE.

Details

  • Original title: A STUDY OF THE SUBCOOLED FLOW REGION OF A CAPILLARY TUBE-SUCTION LINE HEAT EXCHANGER.
  • Record ID : 1988-1389
  • Languages: English
  • Publication date: 1986/09/01
  • Source: Source: Proc. int. Symp. Heat Mass Transf. Refrig. Cryog., Dubr.
    165-186; 18 fig.; 12 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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