Effektivnost' raboty kholodil'nogo oborudovaniya s uchetom godovogo izmeneniya temperatur okruzhayushchey sredy

The operation of a refrigeration plant on CO2 transcritical cycle with parallel compression and an ejector (system 1) used at a food enterprise was analyzed taking into account the ambient temperature changes during a year. The operation of this plant was compared with the operation of the refrigeration plant consisted of two independent refrigeration plants on R404A, one operating on onestage compression with a single throttling, another - on economizer cycle (system 2). The analysis using the entropic and statistical method [1,2,3] gave the possibility to define and compare the efficiency of 1 and 2 systems. The average values of a really COP during the period under study were defined. These values appeared to be comparable for two systems. An average degree of thermodynamical perfection of system 1 (on R744) was higher by 8.58 % as compared with system 2 (on R404А).

эффективность, транскритический цикл СО2 с параллельным сжатием и эжектором, цикл одноступенчатого сжатия с однократным дросселированием, цикл с экономайзером, энтропийностатистический метод анализа, учет изменения температуры окружающей среды