Installations for defrosting and warming colostrum in continuous mode

Abstract

The article is devoted to the development of microwave technology and installations for preparing frozen cow colostrum for calf feeding by exposure to an ultrahigh-frequency electromagnetic field in two volume resonators, which allow defrosting and heating of cow colostrum at different doses in a continuous mode. Two resonator microwave installations designed for farms have been developed and described. Effective modes of defrosting and warming up cow colostrum in an electromagnetic field of ultrahigh frequency: duration of exposure to ultra-high frequency electromagnetic field in a resonator is 12 min; power of microwave generators 3.5–3.65 kW; plant productivity 25–30 kg/h; energy costs for the process 0.12–0.18 kW-kg/h, heating temperature of raw materials to 38–40 °C. For cattle farms up to 600 heads, one microwave installation is enough to defrost and heat cow colostrum. The annual economic effect due to lower operating costs will be 153600 rubles. The profitability of the process will increase by 3.22%.

Justification of the parameters of a microwave installation with a metal-dielectric resonator for defrosting of colostrum of animals

“…Next, you should turn on the microwave generators (magnetrons 11), the emitters of which are directed into the conical resonator 10, after which the EMPHF is excited, the liquid raw material is heated to a temperature of 36-38 ° C and is drained through the transcendental waveguide 13, the throughput of which is regulated with using a ball valve. In a conical non-ferromagnetic resonator 10, an electric field of high intensity (higher than 1.0-1.5 kV / cm) is excited, therefore, low-temperature disinfection of molosin occurs [10]. The use of transcendental waveguides, the dimensions of which are matched to the wavelength, and a conical non-ferromagnetic resonator provide electromagnetic safety.…”

Mathematical model of colostrum defrosting in super-high-frequency generator equipped

“…Before young animals' feeding, the colostrum in containers (located into the defrosters) is firstly defrosted by the steam-water method (from -10 C to 0 C) and then heated up to +37…+38 C. As both defrosting and heating are quite long-lasted processes (1.5…2 h), the nutritive value of the colostrum decreases [6].…”