Tag Archives: rape

349-356 V. Bulgakov, V. Bandura, M. Arak and J. Olt
Intensification of rapeseed drying process through the use of infrared emitters
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Intensification of rapeseed drying process through the use of infrared emitters

V. Bulgakov¹, V. Bandura², M. Arak³ and J. Olt³*

¹National University of Life and Environmental Sciences of Ukraine, 15, Heroyiv Oborony street, UA03041 Kyiv, Ukraine
²Vinnytsia National Agrarian University of Ukraine, Soniachna street 3, UA21008 Vinnytsia, Ukraine
³Estonian University of Life Sciences, Kreutzwaldi 56, EE51014 Tartu, Estonia; *Correspondence: jyri.olt@emu.ee

Abstract:

The theoretical basis of the agricultural material drying techniques has been formed in the world for two and a half centuries. Nevertheless, despite the multitude of studies well presented in the literature, the industry still lacks universally recognized methods of design calculation for the majority of drying problems. Presumably, this is due to the fact that the dehydration of foodstuffs is one of the most energy-intensive and complicated work processes. In the process of thermal treatment during the drying, the physical state of the water in the treated item changes, the properties of the item itself are altered.
Recently, the drying of foodstuffs by means of infrared (IR) radiation has been gaining ever wider acceptance. At the same time, the technologies for dehydrating foodstuffs and materials are now far ahead of the theory of drying. Not only the classical literature on the drying problems, but even special studies on the subject cannot provide any specific recommendations for the design of installations with the electro-magnetic principle of energy input. Whereas that is exactly the type of installations that are now actively making headway, while offering serious challenges in their modelling. For that reason, experimenting has until now been the only reliable way of their studying. Despite the available extensive scientific literature on the drying, including works on IR units, the practical issues of engineering IR driers have not been tackled. All the existing studies consider solely particular cases. This study discusses the process of drying the fixed bed of rapeseeds with the use of the electromagnetic infrared emitter. The energy intensity of the process and the optimum thickness of the product bed are determined. The aim of the paper is to examine the effect that the operating condition parameters (energy input intensity, temperature, grain bed thickness) have on the drying kinetics and the energy characteristics of the process. The methods of research are based on the thermophysical analysis of the material’s structure. The experimental studies were carried out with the use of monitoring and measuring equipment, up-to-date methods and instruments, including solutions developed by the authors. The analytical treatment was performed with the use of the software packages: MathCAD, Excel. The sample testing and examination took place in the laboratory and the methods were in compliance with the applicable standards. A comprehensive experimental investigation of the effect that the operating parameters (specific load and power) have on the rape seed IR-drying kinetics had been accomplished.

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592-598 Henriksen, B.I.F., A.R. Lundon, E. Prestløkken,U. Abrahamsen and R. Eltun
Nutrient supply for organic oilseed crops, and quality of potential organic protein feed for ruminants and poultry
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Nutrient supply for organic oilseed crops, and quality of potential organic protein feed for ruminants and poultry

Henriksen, B.I.F.¹, A.R. Lundon², E. Prestløkken³,U. Abrahamsen² and R. Eltun²

¹Norwegian Institute for Agricultural and Environmental Research, Organic Food and FarmingDivision, Gunnars vei 6, N–6630 Tingvoll, Norway; britt.henriksen@bioforsk.no
²Norwegian Institute for Agricultural and Environmental Research, Arable Crops Division,Rute 509, N–2849 Kapp, Norway
³Felleskjøpet Fôrutvikling, N-7005 Trondheim, Norway

Abstract:

The aim of organic farming husbandry is to be entirely based on an organically produced diet. Pea is the most commonly cultivated protein rich crop in organic agriculture in Norway. However other high protein crops with complementary properties are needed to meet the nutritional demands in feeds for ruminants, pigs and poultry. An ongoing study in Bioforsk aims to develop cultivation practices on nutrient supply for organic oilseed crops and to establish knowledge on the feed quality of organically grown oilseed crops used as protein feed. It appears that spring turnip rape (Brassica rapa L. var. oleifera) and Camelina (Camelina sativa L.) can both be successfully cultivated with different levels of supplied nitrogen and sulphur. The nutrient value of organic spring turnip rape seems to be equivalent to conventional protein crops. Camelina can be an alternative in organic production, due to fewer problems with harmful pests compared with the traditional oilseed crops rape and turnip rape. Oilseed cake of turnip rape has higher protein and mineral content than the seed, and can be an interesting addition in feed ration for both ruminants and poultry, especially in combination with field pea.

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