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Analyse entropique et statistique des cycles frigorifiques lors de la congélation rapide.

[In Russian. / En russe.]

Auteurs : ARKHAROV A. M., SHISHOV V. V., SHAMSUTDINOV I. R., et al.

Type d'article : Article

Résumé

The entropic and statistical method of the thermodynamical analysis gives the possibility to define necessary power inputs to compensate the entropy production owing to the irreversibility of the working processes in different elements (nodes) of low­temperature plants [1,2]. So it indicates what elements precisely are needed to be improved defining the ways of the plant upgrading.
The paper presents the refrigeration cycles (simple single­stage, single­stage with a heat exchanger, cycle with an economizer and two­stage cycle at partial intermediate cooling) examined by the method of the thermodynamical analysis of the vapor­compression refrigerating machine operating on different refrigerants (R22, R507, R717).
On the basis of the calculations it was concluded that the cycles and refrigerants were efficient. Also the single­stage cycle was revealed to be least effective, the measures to improve it were offered; it was shown that the current recommendations on the refrigerating systems design didn’t take into account the particularities of different cycles operating on different refrigerants. The necessity of taking into account the different distribution of losses through the elements of the refrigerating plant depending on the refrigerant used was accentuated.

Détails

  • Titre original : [In Russian. / En russe.]
  • Identifiant de la fiche : 30017448
  • Langues : Russe
  • Source : Kholodilnaya Tekhnika - n. 11
  • Date d'édition : 2015

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