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Analysis of energy consumption reduction methods in refrigeration systems during year-round exploitation

Annotation

Existing publications do not sufficiently explore problems of systematic approach for equipment selection and management practices that reduce enterprise energy consumption. Methods for reducing operating costs in comprehensive analysis of heating, cooling and electricity systems of enterprises under variable operating conditions, and for rational use of natural cold and secondary energy sources are not presented well by existing works. In the article study a number of technical solutions that provide higher energy efficiency of cold-consuming plants are proposed. High attention is paid to the usage of natural cold and motor drives with frequency control. Basics of parametric optimization of refrigeration systems taking into account year-round operation, changes of characteristics of compressor equipment and power consumption in case of operation at a variable condensing pressure are presented. Different methods of energy consumption reduction in refrigeration systems (frequency control, different management systems, reactive power compensation, etc.) were reported. Basic principles of optimal adaptive control in the operation of such systems are formulated. This research reveals significant opportunities for systematic approach using principles of "energy technology", secondary energy sources and natural cold for comprehensive design of enterprise heating, cooling and electricity systems.

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