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EVAPORATOR SUPERHEAT CONTROL.

[In Japanese. / En japonais.]

Author(s) : YASUDA H.

Type of article: Article

Summary

THE ARTICLE DESCRIBES THE EXPERIMENTAL RESULTS OF A LIQUID REFRIGERANT FEED DEVICE IN A REFRIGERATION SYSTEM. THE DEVICE IS AN ELECTRICALLY-DRIVEN EXPANSION VALVE WHOSE OPENING AND CLOSING IS CONTROLLED BY A STEPPED MOTOR. REFRIGERANT SUPERHEAT AT THE EVAPORATOR OUTLET WAS CONTROLLED TO MAINTAIN A PRESET VALUE VIA A PROPORTIONLITRV EXPERIMENTS WERE PERFORMED UNDER THE CONDITIONS OF COMPRESSOR START-UP AND VARIATIONS IN THE EVAPORATOR INLET AIR TEMPERATURE. EXPERIMENTS WITH A CONVENTIONAL THERMOSTATIC EXPANSION VALVE WERE ALSO PERFORMED IN ORDER TO MAKE COMPARISONS. IT WAS FOUND THAT THE ELECTRICALLY-DRIVEN EXPANSION VALVE SOLVES INSTABILITY PROBLEMS WHICH ARE INHERENT IN CONVENTIONAL REFRIGERATION SYSTEMS USING ORDINARY THERMOSTATIC EXPANSION VALVES.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1987-0490
  • Languages: Japanese
  • Source: Refrigeration - vol. 61 - n. 701
  • Publication date: 1986
  • Document available for consultation in the library of the IIR headquarters only.

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