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Behaviour of the thermostatic expansion valve in non-steady state for a refrigerating machine.

Comportement dynamique de détendeurs thermostatiques de machines frigorifiques.

Author(s) : TAMAINOT-TELTO Z., OUTTAGARTS A., HABERSCHILL P., LALLEMAND M.

Type of article: Article, IJR article

Summary

A good adaptation of refrigerating machine components operating with a variable-speed compressor requires knowledge of the dynamic behaviour of each component, more particularly of the expansion valve. The behaviour of various thermostatic expansion valves has been studied for compressor speed variations of a refrigerating machine, with R22 as refrigerant, and a cooling capacity of 6 kilowatts. The study has shown the disadvantages of these expansion valves, during dynamic operation, without modification of the static superheat. The stable operating limits of different thermostatic expansion valves have been determined as a function of the evaporation temperature and the rotational speed of the compressor during the non-steady state.

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Pages: 124-131

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Details

  • Original title: Comportement dynamique de détendeurs thermostatiques de machines frigorifiques.
  • Record ID : 1996-3383
  • Languages: French
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 19 - n. 2
  • Publication date: 1996/02

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