Method for Optimization of the Gasifier Recovery Zone Height

Abstract

The article provides the results of experimental studies of the effect of air introduction into a gasifier, the fuel particle size, and the recovery zone height on a content of carbon monoxide in wood gas. The mathematical models of wood gas formation presented in the scientific research have uncertain boundary conditions. For adequate use of the mathematical models numerous hypotheses are needed. Therefore, it is essential to acquire experimental data in the actual range of gasifier operation parameters. The research of influence of the gasifier design and operation parameters on the concentration of carbon monoxide in wood gas was conducted in the laboratory using a specially developed plant. The plant consisted of a gasifier with adjustable height of recovery zone and centrifugal air blower with adjustable rate of air introduction into the gasifier. The downdraft gasifier with combined combustion and recovery zones was used. These zones had a diameter of 200 mm. The thermal power of the gas generator was 5 kW. Hardwood with different size range was used as the raw material. The results of the experimental study lead to the establishment of rational values of the recovery zone height that provide the maximum concentration of carbon monoxide at various values of the fuel particle sizes and introduction of air into the gasifier.

Psychological Factors Influencing on the Motivation to Study of Students of TEI

“…The study conducted by National Academies of Sciences, Engineering, and Medicine (the United States of America) has revealed that motives and thinking are two important psychological factors influencing students' success in the context of studying at the tertiary educational institution. The results of the students' survey from one of the colleges in the United States have shown that important psychosocial factors influencing students' success in the learning process are as follows: academic self-efficacy, organization and attention to studying, stress and time management, features of students' involvement in college, emotional satisfaction (Golub et al, 2020a;Golub et al, 2020b).…”

Public Environmental Monitoring of the State of Snowpack in Norilsk

“…where V -volume of 0.1 N Trilon B solution used for titration; C -concentration of Trilon B solution; W -aliquot part of the sample. The electrometric method for determining salinity is based on measuring the relative electrical conductivity of water using a special device -a conductometer, which makes it possible to accelerate and increase the accuracy of its determination in comparison with other methods [28]. The operating principle of conductometer is based on the direct dependence of the electrical conductivity of water (current strength in a constant electric field created by the electrodes of the device) on the number of compounds dissolved in water.…”

The relevance of this article is due to the need to form and develop algorithmic thinking of higher education students as the main requirement of the information society following 21st century skills and competences for new millennium learners. The purpose of the article is to consider algorithmic thinking as a new dimension of learning in higher education. The leading approach to the study of this problem is the analysis of methodological literature, and the experience of students, teachers, and academic

“…Therefore, considering algorithmic thinking as a new dimension of learning in higher education is feasible and very vital for Ukrainian universities. First of all, for a better understanding of algorithmic thinking, it is necessary to determine its essence, main properties, and characteristics (Kostruba, 2018;Golub et al, 2020).…”