Designing the infrared drying machines of cylindrical type with an active reflector

Popov, V M; Afonkina, V A; Levinskii, Vasilii; Zudin, Evgenii; Кривошеева, Елена Валентиновна

doi:10.1088/1755-1315/403/1/012008

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…It is known that infrared drying of materials refers to a technological process of photophysical action, in which optical radiation produces useful heating to remove moisture [5]. The density of the radiation flux and the spectral distribution of the flux energy are the main parameters of the geometry of the "emitter-receiver" system, that is, a system of two bodies involved in radiant heat exchange [5][6][7][8].…”

Section: Methodsmentioning

confidence: 99%

Justification of the effective distribution of energy emitted by a film electric heater on stacked lumber

Levinskiy

2024

BIO Web Conf.

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The research was carried out at the expense of the grant of the Russian Science Foundation No. 23-76-01090, https://rscf.ru/project/23-76-01090/. The article considers the issue of placing boards in a drying plant using infrared film electric heaters. Two options for placing one cubic meter of boards with a thickness of 25 mm and 50 mm are proposed for consideration. The boards are placed between shields with film electric heaters and are separated from each other by transverse gaskets, it is obvious that more gaskets are needed to accommodate boards with a thickness of 25, which means that the distance between the boards will be greater. Hence the hypothesis: an increase in the distance between the shields will lead to an increase in drying time and electrical energy costs. For a theoretical solution, the following is proposed – to present the piled stack in the form of a prism and, considering the known dimensional parameters of the skipped shield, according to a well-known formula, it is possible to obtain a dependence describing changes in the irradiation coefficient on the distance in the radiator-receiver system. The considered irradiance coefficient shows how much of the total radiation from the area of the “receiver” falls on the surface of the “receiver”. As a result, an exponential dependence is obtained, according to which it can be determined that the irradiation coefficient for the placement of boards with a thickness of 25 mm is 8% less than for boards with a thickness of 50 mm, which ultimately will affect the duration of the drying process and the cost of electrical energy. Options are proposed to increase the drying efficiency by increasing the irradiation coefficient by reducing the distance between the panels with film electric heaters. In conclusion, in view of the result described in this article, the main directions for further research on improving the “radiator-receiver” system in relation to drying plants based on film electric heaters are given.

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Section: Methodsmentioning

confidence: 99%

Justification of the effective distribution of energy emitted by a film electric heater on stacked lumber

Levinskiy

2024

BIO Web Conf.

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“…Let us consider the processing of the results as a two-factor experiment to study the effect of infrared radiation from a electric film heater and an active substrate on the germination ability and germination energy of rape plant seeds. For drying, rape plant seeds were scattered on a surface equipped with an active substrate or without it; the electric film heater was placed on top [7][8].…”

Section: Methodsmentioning

confidence: 99%

Assessment of the influence of key factors of the rapeseed drying process using electric radiant film heaters on germination ability and germination energy

Popov

Epishkov

Afonkina

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Drying of any crop is a complex technological process, accompanied by a change in the content of not only the amount of moisture in them, but also useful substances and properties. The improvement of the drying technology of small-seeded crops should be aimed at preserving the sowing qualities of seeds (germination ability and germination energy), therefore, the assessment of the quality of rape plant seeds after the drying process in a conveyor-cascade type drying unit is an important and integral part of the work, and the use of modern mathematical methods is an integral part of the processing and interpretation of the results of field experiments. The experiment and analysis of the results of the work were carried out according to the methodology of the state variety testing of agricultural crops. The results were processed using two-factor analisys.

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“…2. The emitter and the reflector between which the product is located must be activethis will ensure a uniform distributed exposure to IR radiation, which will contribute to the drying process intensification [13];…”

Section: Fig 2 Drying Curve Describing the Process Of Product Dehydra...mentioning

confidence: 99%

Study of the process of infrared drying of lactic starter cultures

et al. 2023

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An assessment of the current state of the Russian lactic starter market is given, which reflects the dependence on imported raw materials mainly from European manufacturers. To reduce dependence and ensure food security during the sanction period, the scientific and technical community of the Russian Federation has been set with a task to create technologies that allow obtaining high-quality lactic starter cultures and fermented products based on them. The article discusses the drying of lactic starter culture to increase storage terms and conditions. An important point in the dehydration process is the preservation of biologically active substances (lactic acid organisms, bifidobacteria) in the starter dry residue. The basic technologies of starter culture drying are considered, an alternative technology of IR radiation with the use of membranous electric heaters is proposed. The experimental kinetic dependences and the equation of the drying process of lactic starter cultures were obtained on the manufactured laboratory stand. Laboratory tests of the dried starter culture showed full compliance of the content of biologically active substances with the starting material, GOST RF and a high degree of recoverability, which indicates the feasibility of developing IR radiation technologies and introducing them into the processing of lactic and lactic acid raw materials.

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Designing the infrared drying machines of cylindrical type with an active reflector

Cited by 4 publications

References 1 publication

Justification of the effective distribution of energy emitted by a film electric heater on stacked lumber

Justification of the effective distribution of energy emitted by a film electric heater on stacked lumber

Assessment of the influence of key factors of the rapeseed drying process using electric radiant film heaters on germination ability and germination energy

Study of the process of infrared drying of lactic starter cultures

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