Abstract:Introduction. The grain collected by a combine contains not only full-weight grain, but also weeds, including harmful ones, which include toxic ergot sclerotia. Existing grain cleaning machines cannot provide complete separation of toxic ergot sclerotia during a single technological process, because of the similarity of physical properties. A complete separation of ergot from grain in one technological process is possible by density using aqueous solutions of inorganic salts. Therefore, an urgent issue is the … Show more
“…Four days were chosen for the study: two clear days and two cloudy ones. At the same time, snow sticking to solar panels was observed on one of two days [8,9]. The average duration of these days was 8 hours and 30 minutes.…”
Solar energy is becoming a key resource of electrical energy in the modern world. Therefore, it is necessary to use it rationally and profitably. The article deals with the issues of efficient use of solar panels due to automatic cleaning devices in winter. The proposed device allows you to use solar energy in maximum quantities, regardless of weather conditions and seasons. This device can be used in the construction of new solar power plants, as well as in the modernization of existing ones. The development and modernization of solar energy will improve the economic side of the energy situation in our country in the future.
“…Four days were chosen for the study: two clear days and two cloudy ones. At the same time, snow sticking to solar panels was observed on one of two days [8,9]. The average duration of these days was 8 hours and 30 minutes.…”
Solar energy is becoming a key resource of electrical energy in the modern world. Therefore, it is necessary to use it rationally and profitably. The article deals with the issues of efficient use of solar panels due to automatic cleaning devices in winter. The proposed device allows you to use solar energy in maximum quantities, regardless of weather conditions and seasons. This device can be used in the construction of new solar power plants, as well as in the modernization of existing ones. The development and modernization of solar energy will improve the economic side of the energy situation in our country in the future.
Introduction. In addition to grain, a grain heap of rye may contain poisonous ergot sclerotia. Modern grain cleaning machines do not isolate ergot sclerotia in one technological process because of the similarity of physical properties in linear dimensions. Isolation of ergot sclerotia from rye grain in one technological process is possible through the use of aqueous solutions of inorganic salts. The purpose of the study is to determine the optimum elevation of the loading hopper relative to the liquid surface. The data obtained contribute to increasing the quality of the technological process of the machine being developed.
Materials and Methods. The paper considers the delivery of rye grain flow from the loading hopper outlet into the liquid by varying the specific grain load, liquid density and the delivery height. To set up the experiments, the experiment design methods have been used. The experimental data have been processed using the statistical package Statgraphics Plus 5.1.
Results. The estimation of the effective elevation of the loading hopper outlet relative to the liquid surface when delivering grain flow has been carried out. There have been obtained regression models for the fraction of grains, which did not submerge and rose up to the liquid surface with air bubbles.
Discussion and Conclusion. It has been found that the density of the aqueous salt solution has a significant effect on the percentage of grains, which did not submerge and rose up to the liquid surface with air bubbles. The smallest values of at different density of the liquid and specific grain load are achieved at a grain delivery height 56.0 ∙ 10–3 m.
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