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What's important in piping refrigerant?

Author(s) : SNYDER D.

Type of article: Article

Summary

Pipeline design for systems using fluorinated hydrocarbon refrigerants requires a compromise between many incompatible ideals. Pressure drop, oil return, vibration, plant capacity and proper expansion valve operation are a few. The article deals with the major problem areas and suggests the ways in which a satisfactory compromise can be reached. Most problems are caused through distance between compressor and condenser, compressor and evaporator, or both. Differences in level are particularly troublesome. Whether an oil separator is fitted at compressor discharge or not, some oil will be carried into the system. Only good pipeline design can ensure the return of that oil to the compressor. The other main disfunction is caused by flashing of liquid refrigerant before it reaches the expansion valve. The author explains these problems and discusses their solutions. D.W.H.

Details

  • Original title: What's important in piping refrigerant?
  • Record ID : 1995-0895
  • Languages: English
  • Source: Air Cond. Heat. Refrig. News - vol. 192 - n. 7
  • Publication date: 1994/06/13
  • Document available for consultation in the library of the IIR headquarters only.

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