3 research outputs found

    Elektrownia wielopaliwowa jako element dostarczania energii zapasowej do obiekt贸w rolniczych

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    Paper presents research concerned utilization of natural gas in a liquid state as a new source of electrical energy generation in country side areas of Russia to use it in a small family farms and bigger agriculture enterprises. The experiment shows that alcohol and gasoline are more expensive products to be a source for electricity generation as a reserve energy supply in agriculture production areas of the country. Introduction of natural gas generator as an alternative fuel makes possible to produce low cost of electrical energy in any part of the country, what gives great potential to alternative energy supply, but especially for agriculture production on small households and also bigger enterprises.W pracy przedstawiono badania dotycz膮ce wykorzystania gazu ziemnego w stanie ciek艂ym jako nowego 藕r贸d艂a wytwarzania energii elektrycznej w rosyjskich obszarach wiejskich w celu wykorzystania go w ma艂ych gospodarstwach rodzinnych i wi臋kszych przedsi臋biorstwach rolniczych. Eksperyment pokazuje, 偶e alkohol i benzyna s膮 dro偶szymi produktami, kt贸re mog艂yby by膰 brane pod uwag臋 do wytwarzania energii elektrycznej jako energii zapasowej w r贸偶nych obszarach produkcji rolnej kraju. Wprowadzenie generatora gazu ziemnego jako paliwa alternatywnego umo偶liwia wytwarzanie taniej energii elektrycznej w dowolnej cz臋艣ci kraju, co daje ogromny potencja艂 dla alternatywnych dostaw energii, ale szczeg贸lnie dla produkcji rolnej w ma艂ych gospodarstwach domowych, a tak偶e w miar臋 potrzeb w wi臋kszych przedsi臋biorstwach rolnych

    Rezultaty bada艅 rozdrabniacza ziarna z wykorzystaniem wielokryterialnej metodyki oceny

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    Currently in Russia and other countries in family farms there is a demand for lowering cost of animal production. Main direction to achieve new terchnological solutions characterized by low energy constumption and high efficiency with maintaining high quality of product (mineral). For example, lately in animal production are acquired concentrates with low unity costs. Realising targets releated with lowering costs of forage production with usage comminution and crease of grain. Previously conducted own researches and literature analises shows, that currently used solutions are characterized by big errors made by construction of the devices, and technology effect of obtained product (grain). The paper presents the criteria for optimalization of technical indicators of shredding devices affecting the quality of the product.Obecnie, w Rosji i innych krajach w gospodarstwach rodzinnych i farmerskich d膮偶y si臋 do obni偶enia koszt贸w produkcji zwierz臋cej. G艂贸wnym kierunkiem prac umo偶liwiaj膮cych osi膮gni臋cie tego celu jest opracowanie nowych technicznych rozwi膮za艅 charakteryzuj膮cych si臋 nisk膮 energoch艂onno艣ci膮 i wysok膮 wydajno艣ci膮 z zachowaniem wysokiej jako艣ci produktu (surowca) przy produkcji pasz. Przyk艂adowo w ostatnich latach w produkcji zwierz臋cej pozyskuje si臋 koncentraty o niskich kosztach jednostkowych, a zastosowanie rozdrabniania i gniecenia ziarna umo偶liwia realizacj臋 tego celu zwi膮zanego z obni偶eniem koszt贸w produkcji pasz. Prowadzone do tej pory badania naukowe i analiza literatury wykazuj膮, 偶e dotychczasowe rozwi膮zania charakteryzuj膮 si臋 du偶ymi b艂臋dami wynikaj膮cymi z konstrukcji urz膮dze艅, a tak偶e efektem technologicznym uzyskanego rozdrabnianego produktu (ziarna). W pracy przedstawiono kryteria optymalizacji wska藕nik贸w technicznych urz膮dze艅 rozdrabniaj膮cych wp艂ywaj膮cych na jako艣膰 produktu

    Studies of a Rotary鈥揅entrifugal Grain Grinder Using a Multifactorial Experimental Design Method

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    A scientific and technical literature review on machines designed to grind fodder grain revealed that the existing designs of grinding machines—those based on destruction by impact, cutting, or chipping—have various drawbacks. Some disadvantages include high metal and energy intensity, an uneven particle size distribution of the ground (crushed) product, a high percentage of dust fraction, the rapid wear of work tools (units), and heating of the product. To eliminate most of the identified shortcomings, the design of a rotary–centrifugal grain grinder is proposed in this paper. The optimization of the grinder’s working process was carried out using experimental design methodology. The following factors were studied: the grain material feed, rotor speed (rpm), opening of the separating surface, number of knives (blades) on the inner and outer rings, technical conditions of the knives (sharpened or unsharpened), and the presence of a special insert that is installed in the radial grooves of the distribution bowl. The optimization criteria were based on the amount of electricity consumed by and the performance of the rotary–centrifugal grain grinder. The quality of performance was quantified by the finished product, based on the percentage of particles larger than 3 mm in size. An analysis of the results of the multifactorial experiment allowed us to establish a relationship (interaction) between the factors and their influence on the optimization criteria, as well as to determine the most significant factors and to define further directions for the research of a centrifugal–rotary grain grinder. From our experimental results, we found that the grinder is underutilized in the selected range of factor variation. Furthermore, the number of knives installed at the second stage of the grinder, the gap (clearance) of the separating surface, and the technical condition of the knives are among the most important factors influencing the power consumption and the quality of the resulting product. A reduction in the number of knives at the first stage has a positive effect on all the selected optimization criteria; and by varying the factors in the selected range, it is possible to obtain a product corresponding to medium and coarse grinding
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