Automation of the drying process of agricultural raw materials to obtain products of high nutritional value

Алтухов, И. В.; Bykova, S. M.; Лукина, Г В; Ochirov, V D

doi:10.1088/1755-1315/421/3/032019

Cited by 5 publications

(2 citation statements)

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“…An energy-saving operation mode of a conductive-convective mini-grain dryer was suggested that partially uses the heat of solar radiation captured with the help of a solar collector, as well as that stored in a heat accumulator, with the addition of thermal energy received by recirculation of the exhaust drying agent [6]. An automated agricultural feedstock drying system was designed to ensure biotechnological heating conditions for particular product types, making it possible to retain the properties of its essential biological components [7]. Theoretical and experimental studies were performed in order to evaluate the effectiveness of thermoelectric cooler use for collecting water in the process of outdoor air dehumidification, including the case when they are applied in combination with solar photoelectric panels [8,9].…”

Section: Introductionmentioning

confidence: 99%

Raising the Drying Unit for Fruits and Vegetables Energy Efficiency by Application of Thermoelectric Heat Pump

Tikhomirov,

Khimenko,

Kuzmichev

et al. 2024

Agriculture

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Drying food stuffs and other materials belongs to one of the most commonly used feedstock processing techniques, featuring rather high energy consumption. The major disadvantage of conventional electric convective-type household dryers is substantial thermal energy emission into the environment with a wet exhaust, worked-out drying agent. Among other principal disadvantages common to all dryers of this type, the following have to be mentioned: spatial inhomogeneity of heating a product under processing and that of drying agent distribution due to its temperature reduction and relative humidity growth as it moves upwards. A block diagram and a breadboard model of a convective-type thermoelectric dryer employing a thermoelectric heat pump have been designed. In our approach, a product is treated with the help of a drying agent (normally, heated air) with partial exhaust-air recirculation and heat recovery. Laboratory studies of the drying process have been carried out using apple fruits as a test material in order to evaluate the power consumed for evaporation of 1 kg of water in the newly developed convective-type thermoelectric drying unit. Physical parameters of apple fruits before and after drying both in the thermoelectric drying unit and in a conventional series-produced convective-type domestic dryer have been reported. The energy efficiency of the newly designed drying unit has been compared with that of some series-produced samples. It has been found out that, unlike conventional convective-type dryers, the breadboard model of the developed thermoelectric drying unit features a smoother product drying process owing to the presence of side air channels and more effective drying agent path organization in the processing chamber. This conclusion was supported by the results of the carried out tests. Application of thermoelectric heat pumps with the function of the exhaust drying agent heat recovery will make it possible to reduce the drying agent heater installed capacity and the power consumed by the newly designed convective-type thermoelectric drying unit by up to 20% in the course of the drying process, compared to series-produced household convective-type dryers.

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Section: Introductionmentioning

confidence: 99%

Raising the Drying Unit for Fruits and Vegetables Energy Efficiency by Application of Thermoelectric Heat Pump

Tikhomirov,

Khimenko,

Kuzmichev

et al. 2024

Agriculture

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“…Therefore, it is important to choose the optimal dehydration process parameters, allowing to get a high-quality product. Currently, two drying methods are widely used: convective and conductive [2,3].…”

Section: Introductionmentioning

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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