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Choice and application of power efficient chillers in air conditioning systems taking into account climatic conditions.

[In Russian. / En russe.]

Author(s) : SPASSKIY A. A., SUSHENTSEVA A. V.

Type of article: Article

Summary

European producers’ choice of power efficient water cooling machines (chillers) for air conditioning systems is explained by significant electric power saving at exploitation. The paper examines the indices of power efficiency of chillers as well as the factors influencing its increase. Theoretically the most power efficient are the chillers on the base of centrifugal oil­ free compressors at frequency regulation of capacity, but their cost is almost twice as much relative to an ordinary chiller on the base of spiral or screw compressors. Besides, under climatic conditions in Central­ European Russia mid­annual running hours of compressors are significantly less that impacts the effectiveness ratio of chillers. The calculations of the electric power consumption for one working season of a chiller in the air conditioning system for four different types of chillers at about the same refrigerating capacity under conditions of Moscow region are cited; the payback period of more power efficient chillers is estimated (in comparison with a less expensive basic variant at less power efficiency). The calculation allows defining if the choice of a more expensive power efficient plant is rational under conditions of Central­ European Russia.

Details

  • Original title: [In Russian. / En russe.]
  • Record ID : 30020174
  • Languages: Russian
  • Source: Kholodilnaya Tekhnika - n. 3
  • Publication date: 2015/03

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