Assessment of efficiency of drying grain materials using microwave heating
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2019, Vol 1, Issue 8
Abstract
<p>We present results of experimental work on studying the drying of a dense layer of grain using microwave heating. We investigated a series of techniques to supply heat to grain to assess energy efficiency of a microwave field. We studied the following ways of drying: a microwave method, a pulsating microwave method, a microwave-convective cyclic method with blow of a layer with heated air flow and air without preheating, simultaneous microwave-convective drying method.</p><p>Studying the kinetics of drying in a microwave field showed that we can divide the process into heating periods (zero drying rate), constant (first drying rate) and falling (second drying rate). These periods are characteristic for drying of colloidal capillary-porous bodies at other methods of heat supply. We obtained empirical relationships for the drying rate and the average temperature of grain in the first period based on the generalization of experimental data on the study on drying of grain of buckwheat, barley, oats, and wheat. We presented kinetic dependences in a dimensionless form. They summarize data on the studied grains. The aim of comprehensive studies of various methods of heat supply during drying was determination of the optimal method and rational operational parameters, which ensure high intensity of the process and the required quality of the finished product with minimal energy consumption.</p>All studies took place under identical conditions and for the same grain (oats) to ensure the accuracy of the comparison. We determined that the most preferable method is a simultaneous microwave-convective energy supply without air preheating, which minimizes specific energy consumption. Experimental studies on drying using a microwave field made possible to select the required process parameters: power, heating rate, mass, and form of loading. We plan to develop a technology for drying of grain using microwave energy based on the study data
Authors and Affiliations
Irina Boshkova, Natalya Volgusheva, Alexandr Titlov, Sergij Titar, Leonid Boshkov
Keywords
Related Articles
- EP ID EP666219
- DOI 10.15587/1729-4061.2019.154527
- Views 93
- Downloads 0
Studying the influence of production conditions on the content of operations in logistic systems of milk collection
<p>The algorithm of coordination of the content and time of operations execution in logistic systems of milk collection with manufacturing conditions was developed. The appropriateness of execution of eleven management o...
Development of the method of distribution of memory in nonstationary loaded information processing systems
<p>The trend of growing capacity of modern infrastructures and popularity of network services raises the requirements for multi-server information processing systems they work with. The occurrence of events on a regional...
Acceleration analysis of the quadratic sieve method based on the online matrix solving
<p>The algorithm for the<strong> </strong>online matrix solving<strong> </strong>is proposed. The rate of acceleration of the basic quadratic sieve method based on the online matrix solving<strong> </strong>is investigat...
Determination of dynamic load features of tank containers when transported by rail ferry
<p>Simulation of the dynamic load of the tank container when transported as part of a combined train on a rail ferry is carried out. Mathematical models taking into account possible interactions of tank containers with t...
Modeling the process of microbial biofilm formation on stainless steel with a different surface roughness
<p>This paper reports a study into the process of<strong> </strong>bacteria adhesion to surfaces of different roughness depending on sizes and shapes. It was determined that at the surface of stainless steel with a rough...