Laboratory method of determining the rate of burnout of liquid fuel

2021 ◽  
Vol 93 ◽  
pp. 164-171
Author(s):  
V. V. Kuzmin ◽  
◽  
V. N. Mikhalkin ◽  
P. V. Komrakov ◽  
A. I. Karnyushkin ◽  
...  
Keyword(s):  
Video Recording ◽  
Combustion Process ◽  
Laboratory Method ◽  
Educational Process ◽  
Laboratory Work ◽  
Explosion Hazard ◽  
Mass Rate ◽  
Burnout Rate ◽  
Liquid Combustion ◽  
Different Diameters

Introduction. In accordance with the provisions GOST 12.1.044-89 (ISO 4589-84) (Fire and Explosion hazard substances and materials. Nomenclature of indicators and metods of their determination) one of the important parameters of liquid combustion are the mass rate of liquid burnout and the influence of various conditions of the combustion process on the mass burnup rate. A laboratory method for determining the mass burnout rate of a combustible liquid has been developed. Goals and objectives. The aim of the study is to develop a laboratory method for determining the mass rate of liquid burn-up, which can be used in the educational process during laboratory work and to simulate the effect of combustion conditions on the mass rate of liquid burn-up. Methods. To implement this task, we used video recording of changes in the mass of the liquid during its combustion in vessels of different diameters, followed by graphical processing of the results of experiments for calculate the burn-up rate under different combustion conditions. Results and discussion. The method was tested on the example of the combustion of acetone. An example of computer-graphical result for calculating the mass rate of acetone burn-up is given. The empirical dependents of the acetone burn-up rate on the diameter of the liquid surface area is obtained. Conclusions. A laboratory method for determining the mass rate of burnout of a flammable liquid, which can be used in the educational process during laboratory work, has been developed. In contrast to GOST 12.1.044-89 (ISO 4589-84), the developed method can use vessels with a liquid diameter of more than 60 mm. Keywords: burnout rate, acetone, laboratory technique

scholarly journals Experimental determination of a mass loss of biomass pellets at different temperatures of the combustion chamber combusted in a stream of inert material

2019 ◽  
Vol 82 ◽  
pp. 01007
Author(s):  
Katarzyna Kaczyńska ◽  
Konrad Kaczyński ◽  
Piotr Pełka
Keyword(s):  
Mass Loss ◽  
Combustion Chamber ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Circulating Fluidized Bed ◽  
Combustion Process ◽  
Inert Material ◽  
Mass Rate ◽  
Different Temperatures

In the herein paper, research on the mass loss of biomass pellets is presented. The research was carried out on a specially constructed test stand. In the research three types of pellet fuels were used, which were made of oak sawdust, sunflower husk and straw. The research was carried out at three different temperatures of the combustion chamber: 850°C, 750°C and 650°C. The research was carried out without inert material and mass rate flow Gs=2,5kg/m2s and Gs=5kg/m2s. Quartz sand was the inert material. It was expected that an increase in the temperature prevailing in the combustion chamber would accelerate the process of mass loss of the biomass pellet combustion. However, the results of the experiment indicated that this is not the case in every analyzed case. The mass flow rate of inert material intensifies the combustion process and accelerates the biomass pellets made of oak sawdust mass loss, but increasing the temperature in the combustion chamber accelerates the process of biomass pellets mass loss more than the mass flow rate of inert material. Based on the experimental tests carried out, it was found that biomass can be combusted in circulating fluidized bed boilers, albeit due to the diversified chemical composition of the biomass (alkali content), the boiler should be operated in such a way as to prevent the softening and melting temperature of the ash being exceeded.

scholarly journals Influence of Environmentally Friendly and High-Efficiency Composite Additives on Pulverized Coal Combustion in Cement Industry

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Zhiyong Wang ◽  
Shijie Wang ◽  
Qi Zhang ◽  
Qingyan Fang ◽  
Wangsheng Chen
Keyword(s):  
High Efficiency ◽  
Combustion Process ◽  
Combustion Efficiency ◽  
Cement Industry ◽  
Industrial Wastes ◽  
Chemical Reagents ◽  
Cold Rolled ◽  
Burnout Rate ◽  
The Cost ◽  
Better Than

4 kinds of chemical reagents and 3 kinds of industrial wastes were selected as burning additives for 2 kinds of coals in cement industry. The work focused on the replacement of partial chemical reagents by industrial wastes, which not only reduced the cost and took full advantage of industrial wastes, but also guaranteed the high combustion efficiency and removed theNOXand SO2simultaneously. The experiments were carried out in DTF. The combustion residues were analyzed by SEM and XRD. The results showed that the burnout rate was increased after adding the additives; meanwhile, theNOXand SO2release concentration were reduced, but the degree of action varied for different additives and coals. The substitute of chemical reagents by industrial wastes was very effective; overall, the cold-rolled iron oxide worked better than others; the particles surface was tougher and the peaks of crystalline phase were lower than raw coal, which indicated that the additives played good roles in combustion process.

scholarly journals Measurement Data Collection Device Based on ESP32 for Digital Laboratory

2021 ◽  
Vol 4 (4) ◽  
Author(s):  
Ivan A. Khyzhniak
Keyword(s):  
Data Transfer ◽  
Positive Impact ◽  
Measurement Data ◽  
Educational Process ◽  
Ease Of Use ◽  
Laboratory Work ◽  
Collection Device ◽  
The Creation ◽  
User Friendly ◽  
Digital Training

The potential use of digital laboratories is constantly growing every year, as such a device allows you to conduct research in such fields as biology, physics, chemistry and other natural sciences. It is proved that the use of modern equipment increases the efficiency of laboratory classes in schools. Today, there are a large number of educational digital laboratories, which find many areas of use, from laboratory work at school to laboratories at universities. However, if you analyze these digital labs, you can see that they do not have a user-friendly interface and settings. The purpose of this work is to review existing solutions, as well as find solutions to create an improved version of digital training laboratories. The main disadvantage of existing solutions is the lack of data transfer via Wi-Fi or Bluetooth, as well as connection to a computer or smartphone, which could significantly improve the process of working with such a device. One of the solutions to this problem is the creation of digital training laboratories based on the ESP-32 microcontroller. After analyzing the existing digital laboratories, we can conclude that this area needs improvement, as existing technologies allow to create much better devices in terms of ease of use and opportunities for educational purposes. Bluetooth and Wi-Fi are the main elements, the addition of which will significantly improve digital laboratories. One such solution is the ESP-32 microcontroller, as it includes these modules, and its technical characteristics allow you to create a device that will collect data simultaneously from many connected sensors. The creation of a digital laboratory with such characteristics will significantly improve the process of laboratory work in schools and universities, as well as allow more organized distance learning online, which will have a positive impact on the educational process in schools and universities.

scholarly journals МЕТОДИКА АВТОМАТИЗОВАНОГО ОЦІНЮВАННЯ РЕЗУЛЬТАТІВ ВИКОНАННЯ ЛАБОРАТОРНИХ РОБІТ З ПРИКЛАДНОЇ МАТЕМАТИКИ ЗДОБУВАЧАМИ ВИЩОЇ ОСВІТИ

2018 ◽  
Vol 66 (4) ◽  
pp. 162
Author(s):  
Victor V. Oliynyk ◽  
Oleksandr М. Samoilenko ◽  
Nataliia S. Ruchynska
Keyword(s):  
Higher Education ◽  
Academic Discipline ◽  
Educational Process ◽  
Laboratory Work ◽  
Automated Assessment ◽  
Knowledge And Skills ◽  
Web Resources ◽  
Web Resource ◽  
Automated Knowledge ◽  
The Web

In the context of reforming education in Ukraine, electronic systems for managing the learning process and web resources of educational disciplines as components of these systems are widely introduced into the educational process. The need to improve the quality of education and the effectiveness of monitoring the knowledge of applicants for higher education have led to an increase of interest in automated knowledge assessment. Laboratory classes play a leading role in developing skills and application of the acquired knowledge. The effectiveness of using computer technology in laboratory classes depends on the qualitative methodology for conducting them through the academic discipline web resource tools and the automated evaluation of learners’ knowledge and acquired skills. The paper justifies the relevance of automated assessment of students’ knowledge and skills for higher education, describes the methodology for conducting laboratory classes using the web resource tools of the academic discipline and the technology of automated knowledge and skills assessment based on the results of students’ laboratory assignments. The key idea of the proposed methodology is phased approach to the laboratory work implementation inside and outside the classroom through the academic discipline web resource tools, which includes the preparation manual and automatic access to the laboratory work, implementation and defence of laboratory work with the automated assessment of the corresponding reports. The technology of automated laboratory work assessment is understood as a technology of quality assessment in higher education. To determine whether the answer is correct the relevant algorithms have been incorporated into the web resources of the training course.

Two variants of one vector graphics tutorial (CorelDRAW vs Inkscape)

2020 ◽  
pp. 52-59
Author(s):  
A. V. Radionova ◽  
I. E. Drabo ◽  
Yu. V. Gerasimova
Keyword(s):  
Educational Process ◽  
Free Software ◽  
Laboratory Work ◽  
Vector Graphics

Currently, the problem of choice between proprietary and free software for use in the educational process is relevant. The article describes the experience of implementing laboratory works focused on the use of the proprietary vector editor CorelDRAW and the free editor Inkscape. A brief comparison of the main terms and tools of these editors is presented, which will facilitate the transition from CorelDRAW to Inkscape or from Inkscape to CorelDRAW. The description of the laboratory work is a step-by-step instruction with screenshots for creating a vector logo equipped.

scholarly journals Integrative Approach to Teaching of the Circuit Design of Analog Electron Devices in the NI ELVIS Platform

2018 ◽  
Vol 22 (4) ◽  
pp. 4-11
Author(s):  
Oleg V. Stukach ◽  
Arman B. Mirmanov
Keyword(s):  
Virtual Instrument ◽  
Electronic Devices ◽  
Physical Experiment ◽  
Educational Process ◽  
Virtual Instruments ◽  
Laboratory Work ◽  
Integrative Approach ◽  
Laboratory Model ◽  
Measuring Instruments

Modern graduates need to work with electronic devices. On laboratory work, students conduct experiments to solve practical problems of researching real problems that arise in the design and operation of electronic devices. However, the shortage of laboratory equipment and assistants for maintenance and assistance in work, its high cost reduce the quality of laboratory work. On the other hand, modern education is increasingly using a network resource. Virtual laboratories have their advantages, but even when carrying out a physical experiment in them, the sense of the reality of what is happening disappears. Effective solutions to the effectiveness and quality of conducting laboratory exercises can be found using a system of virtual instruments that can be accessed via the Internet or directly at the university.The aim of the research is to show, by the example of one experimental device made on the National Instruments ELVIS platform, the advantages of a combined approach to learning – a successful combination of a virtual resource and a real physical experiment. The laboratory model described in the article is very practical for studying radio-engineering devices, and it can ideologically serve as a basis for other similar developments.The research was based on the prototype board for studying the basics of analog electronics for the NI ELVIS workstation, the cycle of laboratory work on the general technical discipline “Electronics”, the results of their protection, and the results of intermediate student controls. In work the following methods are used: laboratory experiment, modeling, pedagogical testing. The results of the research show that students feel the need for more knowledge about real processes and systems. This need is most evident in the direction of the preparation of bachelors of engineering and technology. They expect from a laboratory work a real physical experiment, but with the convenience of computer-processing results. A new paradigm for studying radio electronic devices, based on physical experiments in a virtual instrument system gives an improvement in the quality of instruction and allows students to study the circuitry of analog devices more effectively. The ideology of virtual instruments leads to more motivation for students; they gain skills to work with modern measuring equipment and at the same time communication skills in a group, as the computer resource is used as a research tool, not the purpose of learning.A physical experiment, using virtual measuring instruments, accessibility and mobility of laboratory facilities, additional motivation of students are the main advantages of using the NI ELVIS hardware and software platform with a specialized breadboard model in the educational process.

scholarly journals Features of improving the quality of chemistry lessons through virtual laboratories

2020 ◽  
Vol 26 (4) ◽  
pp. 5-15
Author(s):  
Kulash Kerimbayeva ◽  
◽  
Ermakhan Kistaubaev ◽  
Ayash Usenbay ◽  
◽  
...  
Keyword(s):  
Education System ◽  
Creative Thinking ◽  
Thinking Skills ◽  
Research Literature ◽  
Educational Process ◽  
Laboratory Work ◽  
Main Role ◽  
Technical Equipment ◽  
Virtual Laboratories ◽  
Pedagogical Research

As you know, improving the education system of students in the learning process has become one of the fundamental problems of modern Soviet pedagogy and psychology and didactics, and in the context of scientific and technological progress and the transformation of the public education system, it is of particular importance. It is especially important that the school teaches not only to give specific knowledge, but also to draw conclusions, make decisions, conduct research based on this knowledge, i.e. to form creative thinking skills. Much attention is paid to the content of the subject of chemistry, technical equipment and methods of organizing laboratory work in scientific and methodological, psychological and pedagogical research literature. The main role in the study of chemistry is played by chemical laboratories, which are an integral part of the educational process. Laboratories are divided into several types depending on the area of application. One of them is virtual laboratories. Using virtual laboratories, logical generalization and visual refinement of the course of training. Application of effective methods and techniques for working with modern software in creating virtual laboratories. Its special feature is that it analyzes problems with other laboratory work.

scholarly journals Organization And Methodology Laboratory Works On Biophysics For Dental Direction

2021 ◽  
Vol 58 (1) ◽  
pp. 3509-3517
Author(s):  
Nurmatova Feruza Bakhtiyarovna
Keyword(s):  
Medical Education ◽  
Natural Sciences ◽  
Educational Process ◽  
Educational Technologies ◽  
Laboratory Work ◽  
Ethical Standards ◽  
Present Stage ◽  
Medical University

Quality medical education must be fundamental. An increase in the level of fundamentally of medical education should be associated with all-natural sciences, including the teaching of biophysics. The main goal of medical education is to improve the quality of training for the healthcare system based on high clinical, scientific, and ethical standards in medical education, the introduction, and the development of innovative educational technologies. At the same time, the basis of teaching should be the well-known didactic principles of pedagogy, and methods of teaching students the natural sciences - systematic, and consistent presentation of educational material, visualization, and accessibility, integration of sciences, and the spread of inter-subject relationships in the educational process at all its levels, requirements for a training experiment. The article shows the role of biophysics in a medical university, problems of teaching biophysics at the present stage, and some methods for solving them. Restore the formation of future dentists' skills to perform laboratory work of a professional nature, a technique is proposed for laboratory work.  

A Laboratory Method of Teaching Mathematics in the Classroom

1924 ◽  
Vol 17 (4) ◽  
pp. 209-222
Author(s):  
Charles A. Stone
Keyword(s):  
Laboratory Method ◽  
Laboratory Work ◽  
Teaching Mathematics ◽  
Mental Picture ◽  
Work Shop ◽  
Series Of Experiments ◽  
The Moment

When the term laboratory is mentioned in connection with any subject a mental picture is immediately formed of a classroom equipped with long and heavy tables, and numerous cases whose shelves are plentifully stocked with apparatus and equipment. Another seemingly indispensable addition also thought of is a manual or set of directions to guide the student in using the foregoing equipment to demonstrate the laws or principles under consideration at the moment. Although a laboratory is defined as a work shop devoted to experiments m any science for the purpose of observing its laws in operation, formulating its principles, and systematizing them, the question might well be raised whether it is essential that the student follow directions in performing an experiment or a series of experiments, and whether or not it is possible to do laboratory work in schools where classes cannot be equipped like laboratories. If it is, the great advantages derived from this method should be made available to all pupils and schools.

Active Methods Concerning Skills Formation of the Sensory and Textural Analysis of Cheese

2017 ◽  
Vol 51 (2) ◽  
pp. 269-288
Author(s):  
Mihaela Tita ◽  
Roxana Tufeanu ◽  
Ovidiu Tita
Keyword(s):  
Sensory Analysis ◽  
Teaching And Learning ◽  
Skills Training ◽  
Textural Analysis ◽  
Educational Process ◽  
Laboratory Work ◽  
Practical Skills ◽  
Heterogeneous Groups ◽  
Fundamental Objective

The fundamental objective of this research is establishing favorable active methods applied to students in laboratory work, taking into account the peculiarities of students and the theme specificity so that they form certain practical skills to sensory and textural analysis of cheese. For the research purposes, students were grouped from one of the specializations in two heterogeneous groups. Taking into account their potential for learning, a different method of teaching and learning was applied separately for both groups of students. These methods are associated with other active methods for the skills training of sensory analysis of cheese and to stimulate the student’s creativity. Finally, the same process of assessment is applied to the students and evaluation results of the two groups of students will be compared, by following to determine the effectiveness of the educational process in the case of two different methods, and the measures that are required.

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