Международный научный журнал «Аграрное образование и наука»

При содействии Университета науки и техники штата Айова

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ISSN 2309-7671

Key title:
Agrarnoe obrazovanie i nauka

Abbreviated key title:
Agrar. obraz. nauka

Study the possibility of reducing energy consumption during the pasteurization of milk on small enterprises

L. A. Minuhin, professor, doktor tehnicheskih nauk, Uralskiy gosudarstvennyy agrarnyy universitet (g. Ekaterinburg, ul. K. Libknehta, d. 42), V. V. Gaffner, glavnyy inzhener, G. A. Menshenin, inzhener Pyshminskogo molochnogo zavoda.

The possibility of reducing energy consumption for the pasteurization of milk by the use of more rational scheme of pasteurization, provides for the recovery of heat. It is shown that the main ways to reduce energy costs is pasteurization: regeneration heat hot pasteurized milk cold feed stream; use of an external heat trans-fer medium only for high-temperature pasteurization, heating; prevent leakage of heating steam in the steam heater and use only cold water to lower the temperature of cooling milk. Numerical study of energy con-sumption in the pasteurization limit two cases, the organization of the process: without the use of heat recov-ery and the use of this process. The above conclusions are confirmed by numerical analysis. The results of this study showed that the energy consumption for these two extreme cases varies considerably, with the scheme with the use of regeneration, reduces the cost of thermal energy in the pasteurization up to 8 times. It also shows that a significant reduction in energy costs provide closure at the condensate drain line heating steam boiler or heat electro station. These recommendations can be effectively used by enterprises engaged in processing milk. It is shown that a similar approach can be used for the development of regeneration cir-cuits to reduce the cost of cooling the process streams. This approach revealed that regeneration schemes in the cooling water line will help reduce the cost of the refrigerant in three - four times and thus reduce, and in some cases eliminate the collection of effluents in the sewage.

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