Home/ Majors directory/Thermal Power Engineering/Steam and Gas Turbines
Steam and Gas Turbines
Major: Thermal Power Engineering
Code of subject: 6.144.00.O.030
Credits: 5.00
Department: Heat Engineering and Thermal and Nuclear Power Plants
Lecturer: Taras Kravets
Semester: 5 семестр
Mode of study: денна
Завдання: As a result of studying the academic discipline, students should acquire the following competencies:
Integral competence (IC):
IC 1. The ability to solve complex general, specialized tasks and practical problems in the field of heat and power engineering or in the process of learning, which involves the application of theories and methods of electrical engineering and is characterized by the complexity and uncertainty of conditions
General competences GC:
GC 3. The ability to learn and master modern knowledge.
GC 4. Ability to apply knowledge in practical situations.
GC 7. Ability to work in a team.
GC 9. Ability to make informed decisions.
Special (professional) competencies (PC):
PC 2. The ability to apply and integrate knowledge and understanding of other engineering disciplines to solve professional problems.
PC 3. Ability to design and operate thermal power equipment.
Learning outcomes: As a result of completing the course project, students must obtain the program learning outcomes that are provided for by the professional and practical component of the specialty's OPP.
Program Learning Outcomes (PL):
PL 4. Analyze and use modern engineering technologies, processes, systems and equipment in the field of thermal power engineering.
PL 5. Select and apply appropriate typical analytical, computational and experimental methods; correctly interpret the results of such studies.
PL 11. Have laboratory/technical skills, plan and perform experimental research in thermal power engineering using modern techniques and equipment, assess the accuracy and reliability of results, and draw informed conclusions.
PL 12. Understand key aspects and concepts of thermal power engineering, technologies for energy production, transmission, distribution and use.
PL 14. Have the skills to solve complex tasks and practical problems that involve the implementation of engineering projects and conducting research in accordance with the specialization.
PL 15. Understand the basic properties and limitations of the materials, equipment and tools used, engineering technologies and processes.
Required prior and related subjects: List of previous and related academic disciplines:
Theoretical foundations of heat engineering.
Hydro-gas dynamics.
Technical thermodynamics.
Theoretical mechanics and fundamentals of design.
Materials science.
Related and subsequent academic disciplines:
Fundamentals of automation and automation of energy facilities.
Thermal power plants.
Operating modes of thermal power plants.
Fuel and boiler plants.
Operation of industrial and municipal thermal power plants.
Summary of the subject: The discipline provides for the study of the designs of steam turbines of thermal power plants, the principle of their operation; types and designs of the main thermal schemes of turbine installations; structural materials used in turbine construction; the sequence of design and thermal calculation of stages and cylinders of steam turbines of thermal power plants and CHP plants; principles of constructing the steam expansion process in the I – S diagram in the flow part of the turbine; types and designs of the main elements of the turbine installation and methods of their calculation.
Опис: Current state and development of steam turbines. Turbine as the main engine of a modern thermal power plant and CHP. Principles of operation of a turbine (using the example of a single-stage). Classification of steam turbines. Classification of steam turbine symbols. Basic thermal diagrams of steam and gas turbine installations of thermal and nuclear power plants. Intermediate superheating of steam. Regenerative heating of feedwater. Basic equations of the theory of steam turbines. Energy conversion in the turbine stage. Forces acting on the working blades. Stage power. Specific work of steam. Relative blade efficiency of the stage, its dependence on the speed ratio. Additional energy losses in the stage. The process of steam expansion taking into account additional losses. Internal relative efficiency of a single-stage turbine. Basic diagram, theory of the working process of the speed stage. The procedure for calculating the speed stage, speed triangles and its efficiency. The influence of the initial and final parameters of steam on the efficiency of the turbine installation. Power and relative and absolute efficiency of a turbine plant. Working process of multistage steam turbines. Heat recovery coefficient. Internal and external losses in a steam turbine. Internal relative efficiency of the intermediate stage of the turbine. Axial forces in a steam turbine. Types of seals and their purpose. The process of steam flow in labyrinth seals. Schemes of end seal pipelines. Schemes of simple gas turbine plants. Schemes of improved gas turbine plants. Combined cycle plants.
Assessment methods and criteria: Assessment of knowledge is provided by current and examination controls.
1. Current control in practical and laboratory classes is carried out in order to determine the readiness of students for classes in the following forms
- selective oral questioning before the start of classes.
- frontal standardized survey with tests lasting 5-10 minutes.
- frontal check of homework completion.
- Calling individual students to the board to solve problems independently, written answers to individual questions asked during the laboratory class.
- assessment of student activity in the course of classes, proposals made, original solutions, clarifications and definitions, additions to previous answers, etc.
2. Examination control is carried out in order to determine the level of students' knowledge in the following forms:
- a survey with the help of tests posted in the VNS of Lviv Polytechnic, lasting 30 minutes.
- written survey (examination paper) lasting 70 minutes.
- oral examination to assess the level of knowledge acquisition and achievement of learning outcomes. It consists in finding out the level of knowledge of students through direct contact with them during a test conversation. The oral examination involves the teacher asking questions (tasks), preparing students to answer and demonstrate their knowledge, correcting and self-controlling the answers given in the process, analyzing and evaluating them.
Критерії оцінювання результатів навчання: - work in practical classes - 15 points;
- work in laboratory classes - 15 points;
- examination control - 70 points (written component - 60 points, oral component - 10 points).
Total for the discipline - 100 points.
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: 1. Turbines of thermal power plants and nuclear power plants. Lecture notes for full-time, part-time and external students of the specialty "Heat Power Engineering". Kravets T.Yu., Galyanchuk I.R., (Registration number: 3600 from 01.09.2011) - Lviv, 2011. - 95p.
2. Stopping steam turbines of thermal power plants. Mysak Y.S., Kravets T.Yu., Dvorovenko V.M. Scientific Research Institute "Ukrainian Technologies", Lviv, 2011. - 194p.
3. Starting modes of operation of steam turbines of thermal power plants. Mysak Y.S., Galyanchuk I.R. Dvorovenko V.M. Scientific Research Institute "Ukrainian Technologies", Lviv, 2008. - 265p.
4. Chernousenko O.Yu. Design and purpose of the main elements of steam turbines of thermal power plants and nuclear power plants: Part 1, Stator. Textbook for students of the Faculty of Heat and Power Engineering/ O.Yu. Chernousenko, L.S. Butovsky, O.O. Granovskaia, R.I. Gudov, 2010 – 150 p.
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