Abstract
There have been conducted probation studies of an improved uninterrupted pasteurization set “tube in tube” that allowed to provide modern market needs of consumers in getting high-quality food products that must undergo pasteurization stages at technological production. Heat delivery by FFREHRT is used in the set for providing heat flow distribution evenness. There has been established the optimal working space of processed raw materials by studying a temperature drop in the middle of the raw material flow and at the apparatus surface. At the width of the linear ring size of the working environment as 9.5 mm and the flow speed as 0.4 m/s there is provided the least temperature drop value as 0.7 °С. At decreasing the air gap width, the temperature drop value increases and at 5.5 mm is equal to 2 °С that favors the effectiveness decrease of the pasteurization process. According to results of comparative indices of the main composition and obtained quality of pasteurized cow milk, just the experimental sample, obtained at the probation of the offered apparatus is advantageous, comparing with a traditional. It is explained by the decrease of milk temperature processing at the expanse of double pasteurization by FFREHRT, comparing with the traditional pasteurization method. The conducted studies prove the effectiveness of constructive-technological solutions for realization of pasteurization in the set “tube in tube”: the use of two-side heating by FFREHRT that due to its technical parameters is able to take any geometric form of the working chamber and at that provides the necessary evenness of heat flow distribution. We must also note the improvement of exploitation parameters of the offered set, namely facilitation of the automatic control of temperature regulation and the absence of the steam coat and correspondent armature as in the traditional apparatus that decreases metal consumption essentially. The obtained results are urgent for using the presented invention for pasteurization of different food raw materials (milk, juice, low-alcohol beverages and so on). The use of the improved pasteurizer allows to decrease resource consumption and to improve the quality of obtained products
Highlights
Development tendencies of farm enterprises and food industry of many European Union countries needs innovatively-grounded technical re-equipment of pasteurization sections for providing maximal preservation of initial properties of processed raw materials [1, 2]
Unskimmed cow milk is delivered from previous storage chamber 1 by pump-supplier 2 with delivery speed regulation to uninterrupted pasteurization set “tube in tube” 3
The set has entrance and exit sleeves of the raw material 4, 8, and pasteurization is realized at the expanse of IR-radiation from flexible film resistive electric heater of the radiant type 5, placed at the internal and external surface of apparatus 3
Summary
Development tendencies of farm enterprises and food industry of many European Union countries needs innovatively-grounded technical re-equipment of pasteurization sections for providing maximal preservation of initial properties of processed raw materials [1, 2]. The aim of the work is to conduct probation studies of the improved uninterrupted pasteurization set “tube in tube” for determining a possibility of satisfying modern market needs of consumers in getting high-quality pasteurized food products. At the same time the use of IR-radiation at pasteurization processes gives a possibility to intensify the technological process, to increase the quality of ready products, but only under conditions of correspondence of spectral characteristics of milk and radiator This in its turn conditions the expedience of determining obtained quality indices of heat-mass exchanging processing for confirming the effectiveness of offered innovative solutions at improving the set “tube in tube”. The offered innovative construction-technological solutions allow to make high-quality food products at the expanse of the effective pasteurization process with maximal preservation of natural properties
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