Argumentation of the operating regimes and of the constructive-technological parameters of the automated ecological installation with natural and artificial cold for milk cooling: PhD thesis in technical sciences

Refrigeration systems with artificial cold for milk cooling at the current stage are not environmentally suitable, as they use different types of freon, with a high installed electrical power and relatively high specific electricity consumption. Installations with natural and artificial refrigeration have several advantages compared to refrigeration installations with artificial cold, namely: - are more environmentally friendly, because they exclude the use of freon as a refrigerant during the cold period of the year The main goal of this research consists in the argumentation of the methodology of cooling milk with natural and artificial cold by defining the constructive-technological parameters of the automated ecological installation. The objectives: improving the technical, energetical and economical indices of the combined refrigeration system by using natural and artificial refrigeration; reducing the electrical power of the combined refrigeration system; the significant reduction in the specific consumption of electricity required for cooling milk; improving the operating regimes and proving the constructive and technological parameters of the installations with natural and artificial cold for cooling the milk; evaluation of the effectiveness of the use of installations with natural and artificial cold for cooling the milk taking into account the failure of electrical equipment. The theoretical importance of the paper consists in the methodological contribution to the determination of the optimal parameters of the combined refrigeration installation for the Republic of Moldova, which ensures a saving of energy resources. The practical importance: the refrigeration system with natural and artificial cold was modernized with optimizing the technological constructive parameters of the cold accumulator.