Engineering, Energy, Transport AIC

Anatolii Spirin – PhD of Engeneering Science, Associate Professor at the Department of General Technical Disciplines and Labor Protection of Vinnytsia National Agrarian University (3, Sonychna St., Vinnytsia, 21008, Ukraine, e-maill: spirinanatoly16@gmail.com, http://orcid.org/0000-0002-4642-6205).
Ihor Tverdokhlib – PhD of Engeneering Science, Associate Professor at the Department of General Technical Disciplines and Labor Protection of Vinnytsia National Agrarian University (3, Sonychna St., Vinnytsia, 21008, Ukraine, e-maill: igor_tverdokhlib@yahoo.com, http://orcid.org/0000-0003-1350-3232).
Ihor Kupchuk– Ph.D. of Engeneering Science, Associate Professor at the Department of General Technical Disciplines and Labor Protection of Vinnytsia National Agrarian University (3, Sonychna St., Vinnytsia, 21008, Ukraine, , e-maill: kupchuk.igor@i.ua, http://orcid.org/0000-0002-2973-6914).
Julia Poberezhets – Ph.D. of Agricultural sciences, Associate Professor of the Department of Veterinary Medicine, Hygiene and Animal Breeding of  Vinnytsia National Agrarian University (3, Sonychna St., Vinnytsia, 21008, Ukraine, +380982248856, e-maill: julia.p08@ukr.net, http://orcid.org/0000-0002-1727-6105).

Shortage of quality feed significantly slows down the production of livestock products in Ukraine. One of the ways to overcome the crisis in the production of feed is the use of new high-energy feed, including the products of fractional processing of alfalfa.
For the successful implementation of the skin type of feed, including the products of fractional processing of alfalfa, there should be an opportunity to create their reserves, feed should be canned for successful storage.
The best way to preserve food is to dry it. Energy efficiency of the drying process, ie loss of nutrients, energy costs for the implementation of the process, etc. It depends on the method and its mode parameters. In this case, it is proposed to carry out the drying process in a thick layer of alfalfa pulp by active ventilation with heated air. To determine the rational parameters of the process, such as layer thickness, air flow, drying time and patents to conduct theoretical and experimental studies.
Alfalfa pulp, like most wet plant materials, belongs to the capillary-porous bodies. The drying blood of these bodies has two distinct periods: constant and decreasing speeds (or the first and second drying periods). The moisture content of the material at which the transition from the first to the second period is called critical.
As a result of theoretical research has obtained a dependence that determines the total duration of the drying process on a number of parameters, including initial, critical, equilibrium and final moisture content. To determine these coefficients, as well as to check the adequacy of the obtained dependence, experimental studies were conducted on a special installation. The main elements of the experimental setup are a fan, electric heater, containers with mass, shut-off, control and measuring equipment. According to the results of experimental research, graphical dependences of drying speed and process duration on regime parameters are obtained.

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