Elaborarea instalaţiei frigorifice automatizate cu consum redus de energie electrică pentru răcirea laptelui

The aim of the study has been to determine the optimum period and the efficiency of the use of the automated installation with low energy consumption for milk cooling using natural cold. The use of the natu­ral cooling installation in the cold season and of the combined installation (refrigeration installation and natural cooling installation) in the warm season was substantiated from the point of view of energy saving. The specific consumption of electrical energy for milk cooling by using natural cold constitutes 0,3 kW h/t in the cold season against 30-35 kW h/t when using typical refrigeration installations. From the analysis of temperatures registered in the central zone of the Republic of Moldova, it was established that the natural cooling installation might be used for milk cooling, including in the months of October and April, the duration of water cooling in the cold accumula­tor constituting several hours (from 4 to 13 hours for t ≤ 40С).