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Study thermal characteristics of millet grain, dried in the machine with the swirling flow of the coolant and the microwave energy supply

https://doi.org/10.20914/2310-1202-2016-2-11-15

Abstract

The article discusses the problems of determining the thermal characteristics of millet. The choice of the research object. The paper presents the principle of operation of the plant and the parameters of the standard, organic glass for measurements. Method was to study millet grains and organic glass, which are brought into contact on a common plane. The heater is brought into contact with the product and passed the constant heat flow, which passed through a layer of millet grain at different speeds. As a result, the temperature in the contact plane of the changed and recorded on the chart of the potentiometer in the form of the curve, by which you can determine the time and temperature change. The thermal diffusivity and thermal conductivity determined by empirical formulas obtained by solving a system of differential equations, made up for the system of two bodies, one of which includes the unknown thermal characteristics. Test two bodies in contact on a common plane, resulting in mathematical physics principles constitute two differential equations with uniform initial and boundary conditions of the first kind, due to the parameters of ongoing experience. It is a plot of thermal performance of the temperature and humidity. Revealed linear dependence of the physical thermal characteristics, showing that with increasing temperature the thermal diffusivity value decreases, and the thermal conductivity and specific heat capacity are increasing character. Revealed the equations describing the thermal characteristics of millet grain with a humidity in the range of 13.6–35.1% and the temperature range 293–373 K.

About the Authors

S. T. Antipov
Voronezh state university of engineering technologies
Russian Federation

machinery and equipment for food production department,

Revolution Av., 19, Voronezh



A. V. Zhuravlev
Voronezh state university of engineering technologies

machinery and equipment for food production department,

Revolution Av., 19, Voronezh



D. A. Nesterov
Voronezh state university of engineering technologies

machinery and equipment for food production department,

Revolution Av., 19, Voronezh



References

1. Vasiliev V. N., Kutsakova V. E., Frolov S. V. Tekhnologiya sushki. Osnovy teplo- i massoobmena. [Drying technology. Fundamentals of Heat and Mass Transfer] Saint-Petersburg, GIORD, 2013. 222 p. (in Russian).

2. Konovalov K. L. Vegetable food composites for the production of combination products / K. L. Konovalov, Shulbaeva M. T. // Food Industry. 2008. № 7. S. 8–10. (in Russian).

3. Kazartsev D. A., Antipov S. T., Zhuravlev A. V., Nesterov D. A., Borodkina A. V. Apparat dlya sushki dispersnykh materialov v zakruchennom potoke teplonositelya s SVCh-energopodvodom [Apparatus for drying particulate materials in the swirling flow of coolant to the microwave energy supply] Patent RF, no. 2544406, 2015. (in Russian).

4. Antipov S. T., Zhuravlev A. V., Kazartsev D.A, Borodkina A. V. et al. Combined devices with twisted coolant flow for drying particulate materials. Tekhnologii pishchevoi i pererabatyvayushchei promyshlennosti. APK – produkty zdorovogo pitaniya [Technology of food processing industry agro-industrial complex – healthy food]. 2014, no. 2, pp. 52–59. (in Russian).

5. Chubik I. A., Maslov A. M. Spravochnik po teplofizicheskim kharakteristikam pishchevykh produktov i materialov [Handbook of thermophysical characteristics of foods and materials]. Moscow, Kniga po trebovaniyu, 2012. 185 p. (in Russian).

6. Sharma G. P., Prasad S. Specific energy consumption in microwave drying of garlic cloves. Energy. 2006, no. 12, pp. 1921–1926. doi:10.1016/j.energy.2005.08.006

7. Bhupender S. K., Rajneesh B., Baljeet S. Y. Physicochemical, functional, thermal and pasting properties of starches isolated from pearl millet cultivars . International Food Research Journal. 2013, no. 20(4), pp. 1555–1561.


Review

For citations:


Antipov S.T., Zhuravlev A.V., Nesterov D.A. Study thermal characteristics of millet grain, dried in the machine with the swirling flow of the coolant and the microwave energy supply. Proceedings of the Voronezh State University of Engineering Technologies. 2016;(2):11-15. (In Russ.) https://doi.org/10.20914/2310-1202-2016-2-11-15

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ISSN 2226-910X (Print)
ISSN 2310-1202 (Online)