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EFFICIENCY CONSIDERATIONS FOR TWO STAGE SYSTEMS.

Author(s) : KLINGLER R.

Type of article: Article

Summary

AS SCREW COMPRESSORS HAVE REPLACED RECIPROCATING AND ROTARY-VANE COMBINATIONS FOR 2-STAGE SYSTEMS, THE A. CONSIDERED THAT AN EXAMINATION OF ENERGY REQUIREMENTS FOR VARIOUS ALTERNATIVE CONFIGURATIONS WOULD BE USEFUL. SYSTEMS COMPARED ARE TWO STAGES OF SCREW COMPRESSORS WITH INJECTED LIQUID COOLING ONLY, WITH WATER-COOLED OIL COOLING ONLY, OR WITH A FLASH PRECOOLER OR WITH A FLASH PRECOOLER AND DESUPERHEATER. TO COMPLETE THE COMPARISON A SYSTEM USING A RECIPROCATING HIGH STAGE AND ROTARY-VANE LOW STAGE COMPRESSOR WITH FLASH PRECOOLER AND DESUPERHEATER IS INCLUDED. THE LATTER USES SLIGHTLY MORE ENERGY THAN ITS EQUIVALENT WITH SCREW COMPRESSORS DUE TO THE SCREW OIL COOLING DOING SOME OF THE DESUPERHEATING DUTY. THE OTHER SYSTEMS ARE LESS EFFICIENT, THE LIQUID INJECTED SYSTEM ENERGY REQUIREMENT BEING ABOUT 25% ABOVE THE LOWEST. D.W.H.

Details

  • Original title: EFFICIENCY CONSIDERATIONS FOR TWO STAGE SYSTEMS.
  • Record ID : 1981-1162
  • Languages: English
  • Source: ASHRAE Journal - vol. 22 - n. 12
  • Publication date: 1980/12
  • Document available for consultation in the library of the IIR headquarters only.

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