Abstract
AbstractOne of the most reasonable reserves to improve the efficiency of ambient air conditioning systems is to enable the operation of refrigeration compressors in close to nominal modes by selecting a rational design refrigeration capacity and its distribution in response to the current thermal load according to the actual variable climatic conditions to provide a closed to the maximum annual refrigeration production and matching current air conditioning duties at the same time. The approach to improve the efficiency of using the installed air conditioning systems refrigeration capacity is based on comparing the excess of potentially possible refrigeration production (based on the installed refrigerating capacity) for a certain period with its value needed for precooling the ambient air to a certain threshold (intermediate) temperature, that provides a relatively stable thermal load within subsequent deep air subcooling to a target temperature. The range of a stable thermal load can be provided with operation of a conventional compressor in a mode closed to a nominal value, whereas precooling the ambient air with significant fluctuations in thermal load requires regulation of the refrigeration capacity by application of a variable speed compressor or by using excessive cooling capacity accumulated at reduced thermal load. KeywordsAmbient air conditioningDesign refrigeration capacityCurrent thermal load
Published Version
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