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FREEZING: HOW AMMONIA DOES IT.

Author(s) : JENSEN S. S.

Type of article: Article

Summary

THE ARTICLE CONTAINS A DIRECT COMPARISON BETWEEN TWO VAPOUR-COMPRESSION SYSTEMS USING IDENTICAL COMPONENTS EXCEPT FOR THE REFRIGERANT. EACH SYSTEM INCLUDES A SPIRAL BELT FOOD FREEZER WITH FLOODED AIR COOLING EVAPORATOR, AN EVAPORATIVE CONDENSER, AND A COMPOUND RECIPROCATING COMPRESSOR. ONE SYSTEM USES R22, THE OTHER NH3. THE COMPRESSORS DIFFER ONLY IN SUITABILITY FOR THE REFRIGERANT USED. THE CONCLUSION IS THAT THE NH3 SYSTEM PRODUCES A MARGINALLY LOWER PRODUCT THROUGHPUT USING 18 % LESS SHAFTNYR PT THE BETTER EFFICIENCY COMES FROM A COMBINATION OF LOWER PRESSURE DROP PENALTIES IN IDENTICAL PIPE SIZES, BETTER HEAT TRANSFER COEFFICIENTS, AND LOWER CONDENSING TEMPERATURE AND DUTY. NH3, WITH NO GLOBAL WARMING POTENTIAL, IS THE MORE EFFICIENT REFRIGERANT. D.W.H.

Details

  • Original title: FREEZING: HOW AMMONIA DOES IT.
  • Record ID : 1992-1263
  • Languages: English
  • Source: AIRAH J. - vol. 45 - n. 7
  • Publication date: 1991/07
  • Document available for consultation in the library of the IIR headquarters only.

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