Thermal-Engineering Bases of Energy-chemical Technologies of Polymer Synthesis

Major: Chemical Technologies of Polymeric and Composite Materials Processing
Code of subject: 7.161.06.E.023
Credits: 5.00
Department: Chemical Technology of Plastics Processing
Lecturer: Associate professor Bratychak Mykhaylo Mykhaylovich
Semester: 2 семестр
Mode of study: денна
Мета вивчення дисципліни: familiarizing students with the basics of thermodynamic analysis in relation to chemical-technological objects, primarily current systems, and its consistent application to the calculation based on the analysis of the main thermodynamic processes.
Завдання: The study of an educational discipline involves the formation of competencies in students of education: professional competences of a professional direction - FCS2.2. The ability to apply knowledge of the basics of chemical thermodynamics and the laws of chemical kinetics in the processing of polymer and composite materials in practice. - FCS2.3. The ability to critically analyze existing technologies and form requirements for the development of innovative processes and promising technologies of paint materials and film coatings.
Learning outcomes: As a result of studying the academic discipline, the student must be able to demonstrate the following learning outcomes: - to know the basic principles of thermodynamic analysis and practical skills of its use, necessary for the creation and operation of specific chemical and technological systems of varying degrees of complexity - to be able to carry out thermal calculations, which consist in determining the amount of heat that must be supplied or removed for the process, in calculating the heat exchange process, as well as in determining the costs of coolants and refrigerants for polymer processing. As a result of studying the academic discipline, the student must be able to demonstrate the following program learning outcomes: PR9. Apply theoretical knowledge and practical approaches to the management of processing processes of polymer and composite materials. Lectures, practical classes, independent work Current control - oral survey at practical classes, testing in the National Emergency Service. Exam - written survey, test control. KOM1. Clear and unambiguous presentation of one's own knowledge, conclusions and arguments to specialists and non-specialists, in particular, to students. Lectures, practical classes, independent work Current control - oral survey at practical classes, testing in the National Emergency Service. Exam - written survey, test control. AiB1. Managing work or learning processes that are complex, unpredictable and require new strategic approaches. Lectures, practical classes, independent work Current control - oral survey in practical classes.
Required prior and related subjects: Physics Processes and devices of the chemical industry Thermotechnics Modern technological processes of processing polymer and composite materials Technological processes of modification and processing of polymer and composite materials
Summary of the subject: The main provisions and theoretical foundations of heat transfer processes, methods of heat exchange between heat carriers, usually separated by a wall, are outlined. Simultaneously with the presentation of the theoretical foundations of heat exchange and heat transfer processes, the main attention is paid to the methods of technological calculation of heat exchange processes and equipment for their implementation. For casting forms and calibers of nozzles, their thermal calculation is given and the consumption of the cooling agent is determined. When heating the equipment, the consumption of the heat carrier necessary for the established mode of its operation is calculated. The thermal calculation of the mold during the pressing of reactive plastics is reduced to the determination of the amount of heat necessary to maintain a stable temperature regime of pressing and the determination of the amount of heat and the time of heating the mold to the pressing temperature. Methods of thermal calculation of press forms.
Опис: Basic definitions and provisions. Hot (heating) coolants. Cold (cooling) coolants. Heat load in heat transfer processes. Methods and mechanisms of heat transfer. Heat transfer by thermal conduction. Temperature field, temperature gradient Fourier's law, thermal conductivity coefficient. Thermal conductivity of gases, liquids and various materials. Differential equation of heat conduction. Thermal conductivity of a single- and multi-layer flat wall. Thermal insulation of devices Differential equation of convective heat transfer. Thermal similarity criteria and their physical essence. Criterion equations of convective heat transfer. Algorithm for calculating heat transfer coefficients. Heat transfer in molds. Heat exchange with the surrounding environment. Thermal calculations of molds. Pressing, the essence. Types of preform heating. Temperature field of preforms with electric heating. Location of heating elements. Thermal insulation. Thermal calculation of molds with electric ohmic heating. Calculation of electric heating devices. Calculation of molds with induction heating by currents of industrial frequency. Calculation of the inductor for heating the molds. Ways of increasing the economy of press forms. Thermal calculation of cooling systems of casting molds. Injection molding, the essence, casting molds. Cooling of forms with water. Steam heating of forms. Design variants of cooling systems of casting forms. Thermal balance. Refrigerant consumption. Calculation of the heat exchange surface, heat transfer coefficient. Placement of channels in the form. Change and regulation of temperature during injection molding. Thermal processes in the manufacture of plastic products by the extrusion method. Extrusion, essence. Thermal conductivity in non-stationary mode. Thermal calculation of worm machines. Processes of heat transfer during cooling of products obtained by the blowing method. Heat balance and calculation of the roller cooling system. Analysis of industrial means of obtaining heat and its use in industry. Utilization of secondary energy resources in chemical technology. Secondary energy resources and their types: fuel, heat, excess pressure. The main directions of utilization of secondary energy resources in the chemical industry of plastics processing.
Assessment methods and criteria: Current control of students' knowledge is carried out by means of surveys at practical classes throughout the semester; the final control of students' knowledge is carried out by taking an exam. Control of students' knowledge is an organic component of the educational process. The main tasks of knowledge control include: - increasing the motivation of students for systematic active work during the academic year, reorientation of their goals from receiving a positive assessment to the formation of sustainable knowledge, skills and abilities; - systematization of knowledge and active assimilation during the academic year; - preventing a gap between the tasks submitted for control and the discipline program; - openness of control: familiarization of students at the beginning of studying the discipline with control tasks and all forms of control measures and their evaluation criteria; - overcoming the elements of subjectivism in the assessment of knowledge, which is provided by the preparation of control tasks and tests in written form using a 100-point rating scale; - provision of proper conditions for studying the program material and preparation for control measures, which are achieved by clearly demarcating them in terms of content and time; - expansion of opportunities for comprehensive disclosure of students' abilities, development of their creative thinking. Current and final control of students' knowledge is used during the study of the discipline "Thermotechnical foundations of energy-chemical technologies of polymer synthesis". The latter is carried out in the form of an exam. The specified forms of control are closely interrelated and are organized in such a way as to stimulate the effective independent work of students during the semester and ensure an objective assessment of their knowledge. The object of assessment of students' knowledge is the program material of the discipline of various nature and level of complexity, the assimilation of which is checked accordingly during the current control and examination. The task of current control is to check the understanding and assimilation of certain material, the developed skills of performing practical seminar tasks, the ability to independently process texts, the ability to comprehend the content of a topic or chapter, the ability to publicly or in writing present certain material. The task of the exam is to check the student's understanding of the program material as a whole, the logic and relationships between individual sections, the ability to creatively use the accumulated knowledge, the ability to form one's attitude to a certain problem of the educational discipline, etc. The final (final) assessment of students' knowledge in the discipline "Thermotechnical bases of energy-chemical technologies of polymer synthesis" is carried out in accordance with the procedure established by the Lviv Polytechnic University, on a 100-point scale, taking into account the results of the current and final control. At the same time, the total 100-point knowledge assessment scale is distributed as follows: - assessment of current performance (practical): 20 points; - assessment of final exam results: 80 points. (70 letters, 10 oral component)
Критерії оцінювання результатів навчання: Grades for work in practical classes are assigned on the basis of determining the correctness, completeness and independence of the solutions obtained for each of the tasks: - the obtained results are correct, complete and obtained independently - 100% of the maximum mark; - the obtained results are correct, complete and obtained with significant help and correction of the teacher - 90% of the maximum mark; - the solutions obtained in the work are correct, but incomplete and obtained with significant help and correction of the teacher - 75% of the maximum mark; - the obtained results contain errors, but the approach to obtaining a decision and the application of tools for obtaining a decision are correct - 50% of the maximum score. Current and control testing is carried out in the National Security Service and the grade is automatically assigned for all test tasks. For an essay-type task, 100% of the maximum score is given in the manual evaluation mode for a completely correct and complete solution, 85% - a generally correct solution with minor errors in calculations; 75% - for an incomplete solution with some errors for a generally correct approach to the solution; 50% - in the presence of significant errors and an incomplete solution with the correct approach; 30% - for formulating the right approach without implementing the decision. The exam is conducted in written and oral form (the exam test is valued at 70 points, the oral component - 10 points). The oral examination involves a sample question from different sections of the course and the completion of simple tasks.
Порядок та критерії виставляння балів та оцінок: 100-88 points - certified with an “excellent” grade - High level: the student demonstrates an in-depth mastery of the conceptual and categorical apparatus of the discipline, systematic knowledge, skills and abilities of their practical application. The mastered knowledge, skills and abilities provide the ability to independently formulate goals and organize learning activities, search and find solutions in non-standard, atypical educational and professional situations. The applicant demonstrates the ability to make generalizations based on critical analysis of factual material, ideas, theories and concepts, to formulate conclusions based on them. His/her activity is based on interest and motivation for self-development, continuous professional development, independent research activities, implemented with the support and guidance of the teacher. 87-71 points - certified with a grade of “good” - Sufficient level: involves mastery of the conceptual and categorical apparatus of the discipline at an advanced level, conscious use of knowledge, skills and abilities to reveal the essence of the issue. Possession of a partially structured set of knowledge provides the ability to apply it in familiar educational and professional situations. Aware of the specifics of tasks and learning situations, the student demonstrates the ability to search for and choose their solution according to the given sample, to argue for the use of a particular method of solving the problem. Their activities are based on interest and motivation for self-development and continuous professional development. 70-50 points - certified with a grade of “satisfactory” - Satisfactory level: outlines the mastery of the conceptual and categorical apparatus of the discipline at the average level, partial awareness of educational and professional tasks, problems and situations, knowledge of ways to solve typical problems and tasks. The applicant demonstrates an average level of skills and abilities to apply knowledge in practice, and solving problems requires assistance, support from a model. The basis of learning activities is situational and heuristic, dominated by motives of duty, unconscious use of opportunities for self-development. 49-00 points - certified with a grade of “unsatisfactory” - Unsatisfactory level: indicates an elementary mastery of the conceptual and categorical apparatus of the discipline, a general understanding of the content of the educational material, partial use of knowledge, skills and abilities. The basis of learning activities is situational and pragmatic interest.
Recommended books: Educational and methodological support 1. Humenetsky T.V. Physico-chemistry of polymers: textbook. / T.V. Gumenetskyi, V.E. Levitskyi, O.V. Suberlyak. - Lviv: Rastr-7, 2020. -420 p. 2. Mikulonok I. O. Polymer composite materials. Determination of thermophysical properties / I.O. Mikulonok // Chemical Industry of Ukraine. — 2003. — No. 5. — P. 25-28. 3. M.M. Bratychak, Yu.P. Hetmanchuk Chemical technology of the synthesis of VMS: Training. manual. Lviv: Publishing House of Lviv Polytechnic University, 2009. 495 p. 4. General chemical technology: Textbook/ V.T. Yavorskyi, T.V. Perekupko, Z.O. Znak, L.V. Savchuk. - Lviv: Publishing House of the National University "Lviv Polytechnic", 2005, - 552p. 5. Dubinin A.I. Equipment of chemical production and building materials enterprises: education. manual / A.I. Dubinin, V.M. Atamanyuk, Duleba V.P., Simak D.M.. Ed. Prof. A.I. Dubinina – Lviv: Publishing House of Lviv Polytechnic, 2013. 6. Suberlyak O. V., Bashtannyk P. I. Processing technology of polymer and composite materials. – Lviv.: Rastr-7, 2015. - 456 p. 7. Polymer composite materials and products from them. Production, processing and properties: terminalol. words / I. O. Mikulonok, L. B. Radchenko. — K.: IVC "Polytechnic Publishing House", 2005. — 179 p. Information resources 1. https://vseosvita.ua/library/posibnik-z-navcalnoi-disciplini-osnovi-teplotehniki-543270.html 2. https://tefknulp.lcloud.in.ua/ebook/515
Уніфікований додаток: Lviv Polytechnic National University ensures the realization of the right of persons with disabilities to obtain higher education. Inclusive educational services are provided by the Service of accessibility to learning opportunities "Without restrictions", the purpose of which is to provide permanent individual support for the educational process of students with disabilities and chronic diseases. An important tool for the implementation of the inclusive educational policy at the University is the Program for improving the qualifications of scientific and pedagogical workers and educational and support staff in the field of social inclusion and inclusive education. Contact at: St. Karpinsky, 2/4, 1st floor, room 112 E-mail: nolimits@lpnu.ua Websites: https://lpnu.ua/nolimits https://lpnu.ua/integration
Академічна доброчесність: The policy regarding the academic integrity of the participants of the educational process is formed on the basis of compliance with the principles of academic integrity, taking into account the norms "Regulations on academic integrity at the Lviv Polytechnic National University" (approved by the academic council of the university on June 20, 2017, protocol No. 35).