Технические науки

Determination of the herbs drying coefficients on experimental data

Submitted by red on Wed, 27/12/2017 - 12:57

The method of defining a component equation in drying herbs on the experimental data is developed. Two methods of solving nonlinear algebraic equations with the use of computer systems Mathcad and Microsoft Excel are considered.

Sweet concentrated milk product

Submitted by red on Wed, 27/12/2017 - 12:57

Samples of sweet concentrated milk product with partial replacement of sucrose to glucose - fructose syrup have been developed. The extract of Jerusalem artichoke has been added into the product. Physical-chemical indicators have been studied in the developed samples. It has been found out that the product generally corresponds to the quality indicators of the traditional sweet condensed milks except that of sucrose.

Technology of concentrated milk products based on liquid curd whey

Submitted by red on Wed, 27/12/2017 - 12:57

Samples of sweet concentrated milk product with a partial replacement of skimmed milk powder and water on liquid curd whey are produced. Rheological characteristics have been investigated in the produced samples. It is established that the product belongs to pseudo-plastic liquids with quite a high correlation coefficient.

Investigating associative interactions of food hydrocolloids in creating milk-based products

Submitted by red on Wed, 27/12/2017 - 12:57

The article presents the theoretical basis and practical aspects of using the combinations of non-starch polysaccharides with whey protein. Associative interactions of the used food hydrocolloids for creating new technologies of milk-based products of different textures have been identified and scientifically based.

Study of car-and-tractor diesel 4c4ss (4 cylinder 4 stroke supercharger) 11,0/12,5 work on diesel fuel mixtures with rapeseed oil

Submitted by red on Wed, 27/12/2017 - 12:57

The article presents the results of the study physico-chemical properties of diesel fuels used in agricultural machinery, with the addition of rapeseed oil and the performance of car-and-tractor diesel 4C4SS (4 cylinder 4 stroke supercharger) 11,0/12,5 (D-245.5S2) when operating on mixed fuels of different composition. The optimal adjustment of the fuel system is established.

Analysis and selection of similarity criteria for modeling of polymer coatings formation processes in repair of agricultural machinery

Submitted by red on Wed, 27/12/2017 - 12:57

The article reviews the main similarity criteria for simulation of real fluid motion processes; the conditions ensuring the uniformity of the coating have been formulated. The process of polymer coating forming from the polymer solution on the bearing is recommended to analyze using Reynolds number of Re. The difference between the estimated and actual values of parameters for polymeric coating application does not exceed 10%.

Way of reconstructing case parts of agricultural machinery with poly-meric materials

Submitted by red on Wed, 27/12/2017 - 12:57

The authors suggest a way of reconstructing basic parts using the repair size method. Filment bores are rebored for three repair sizes according to the wear rate. The processed bore is equipped with a new bearing, its outer race being covered with a polymeric coating of adequate thickness providing the junction immobility. The theoretical research has resulted in a model of forming an even polymer coating on the external surface of a rotating cylinder part.

The vacuum regime of the dual-mode milking machine

Submitted by red on Wed, 27/12/2017 - 12:57

A dual-mode milking machine consisting of four modules (a twophase milking machine for milking in pairs, a module for quarter controlling the milk flow intensity, an electrical pneumatic block, and a milk pneumatic valve) has been designed. If the milk flow intensity in any quarter of the udder is low (less than 50cm3/ min) the milking machine works in the three-phase regime of simultaneous milking. If the milk flow intensity in all quarters is higher than 50cm3/min, the milking machine automatically switches to the two-phase regime of milking in pairs.

Experimental modeling of the microwave grain drying process in preparation for grinding

Submitted by red on Wed, 27/12/2017 - 12:53

Grain drying is a complex, continuous and energy-intensive process. One of the ways to improve the quality of grain (and therefore its products) and to save energy is the use of the automatic control system of the technological process (ACS TP). The technological process of grain drying includes measuring and regulation of such indicators as moisture and temperature. These aims are achieved with the help of devices, which make it possible not only to regulate the drying process, but also to archive the technological process data for their further analysis.

Investigation of Ice-Cream Air Phase with a Curd Whey NF Concentrate

Submitted by red on Wed, 27/12/2017 - 12:53

The whey concentrate influence on ice-cream overrun and air bubbles size-consist has been studied. Differential curves for the density distribution of bubbles in diameter have been constructed and the quantitative variables of particle size have been determined. According to the obtained data on particle sizes the air bubbles surface area in the experimental ice-cream samples has been calculated.

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