Case study: Milk Industry
The milk processing industry encloses two major energetic components: producing both thermal agent to heat the milk at various temperature degrees and cold for the freezing stages during pasteurization, UHT.
The thermal agent may vary between 20 – 40% of the overall energy consumption (gas + electrical energy).
The cooling component may determine electrical energy consumptions ranging between 30 – 70 % of the overall energy bill.
Based on an energetic audit, the consumption reduction percentage, the measurements to be implemented and the estimation of possible investments shall be determined.
Results obtained under SERVELECT involvement
•Following the analysis of the gas burnt by boilers to produce thermal agent, the optimal adjustment of the burners is established; gas consumption savings – 15%
•Coordination of drives functioning based on the cooling component necessary to process the milk, with SCADA interface, leads to electrical energy savings of approx. 18 – 15%
•Mounting frequency drives on circulation pumps of cooling agent, on cooling towers fans determines power savings of 10 – 30%, depending on the adjustment, command or control type
•Installing acoustical buzzers on opening and freezer curtains at the storage doors generates cold and implicitly saves energy up to 5 – 15 % of the overall consumption to cooling storage spaces
•The compensation of the consumed inductive reactive energy eliminates the costs for the reactive energy from the bill
•Correlating the functioning of one or two transformers in parallel, based on the loading range reduces active losses up to 50%
•Choosing and negotiating the optimal energy billing rate, based on a study concerning the consumption’s structure and its prognosis, saves money up to 3 – 20 % of the overall energy bill
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