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ENERGY-COST COMPARISON OF VARIOUS REFRIGERATION SYSTEMS FOR A 1,000 SQUARE METERS SUPERMARKET.

Author(s) : SCHWARZ P.

Type of article: Article

Summary

THREE SYSTEMS ARE COMPARED, INDIVIDUAL IN-STORE CONDENSING UNITS FOR EACH SALES CASE, INDIVIDUAL COMPRESSORS WITH A COMBINED CONDENSER IN A PLANT ROOM, AND COMPRESSORS COMMONISED ON TWO SUCTION PRESSURES WITH A COMMON CONDENSER. A CAREFUL ANALYSIS IS MADE ON THE EFFECT OF CABINET LOAD AND STORE TEMPERATURE ON REFRIGERATION REQUIREMENT AND THE EFFECT OF AMBIENT TEMPERATURE ON CONDENSER AND HENCE COMPRESSOR PERFORMANCE. RESULTING GRAPHS SHOW COOLING TIMES AFTER DEFROSTING AND THE EFFECT OF CYCLING ON EVAPORATION PRESSURE. THE CONCLUSION IS THAT, BECAUSE OF THE OFF-LOADING POSSIBLE WITH THE COMMON COMPRESSOR SYSTEM, IT IS POSSIBLE TO OPERATE WITH THE HIGHEST EVAPORATING TEMPERATURES WHICH PRODUCE A LOWER DEFROST REQUIREMENT AND LOWER ENERGY USAGE. OTHER ADVANTAGES INCLUDE FEWER COMPRESSORS WITH A DECREASED CAPITAL COST AND INCREASED RELIABILITY. THE COMPARISON WAS MADE IN WEST GERMANY WHERE INDIVIDUAL COMPRESSORS AND A THIS SYSTEM IS ESTIMATED TO BE 9.4%. D.W.H.

Details

  • Original title: ENERGY-COST COMPARISON OF VARIOUS REFRIGERATION SYSTEMS FOR A 1,000 SQUARE METERS SUPERMARKET.
  • Record ID : 1985-0313
  • Languages: English
  • Source: Rep. Sci. Technol./Linde - n. 36
  • Publication date: 1983
  • Document available for consultation in the library of the IIR headquarters only.

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