Home/ Majors directory/Thermal Power Engineering/Pumps, Ventilators, Compressors
Pumps, Ventilators, Compressors
Major: Thermal Power Engineering
Code of subject: 6.144.00.O.021
Credits: 4.00
Department: Heat Engineering and Thermal and Nuclear Power Plants
Lecturer: Yurasova Oksana
Semester: 4 семестр
Mode of study: денна
Завдання: Studying the academic discipline involves the formation of the following competencies in students:
Integral competence:
– The ability to solve complex general, specialized tasks and practical problems in the field of thermal 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 competencies:
ZK4: The ability to apply knowledge in practical situations.
ZK7: The ability to work in a team.
ZK9: The ability to make informed decisions
Professional competencies:
FK2: The ability to apply and integrate knowledge and understanding of other engineering disciplines to solve professional problems.
Learning outcomes: As a result of studying the academic discipline, the student should be able to demonstrate the following program learning outcomes:
PR4: Analyze and use modern engineering technologies, processes, systems and equipment in the field of thermal power engineering.
PR11: Have laboratory / technical skills, plan and perform experimental research in thermal power engineering using modern methods and equipment, assess the accuracy and reliability of results, make substantiated conclusions.
PR12: Understand key aspects and concepts of thermal power engineering, technologies of energy production, transmission, distribution and use.
Required prior and related subjects: Prerequisites:
- Physics
- Technical thermodynamics
- Theoretical mechanics and design basics
Necessities:
- TPP turbines
- Boiler installations
Summary of the subject: Pumps, fans, compressors belong to the most common hydraulic and aerodynamic machines. They are an integral part of many technological schemes in industry, energy, transport, heat and gas supply, and ventilation of buildings and structures. The solution of a large part of the problems related to the design and operation of these machines is based on the laws and relations describing the transformation of the mechanical energy of the drive into the energy of the liquid or gas flow.The main operating parameters of machines that lift liquids and gases are considered, classifications, theory bases, characteristics, regulation methods, designs of pumps, fans, gas blowers, compressors, automated pumping units used in utilities and thermal power stations are given. The joint operation of the supercharger with the pipeline network is considered. Special attention is paid to the study of the theory of pumps and thrust machines and the features of their use in energy.
Опис: General information about machines for supplying liquids and gases. Classification. Fields of application of machines for supplying liquids and gases.Jet pumps. Periodic pneumatic lifter. The scheme of the riser for liquids.The main operating parameters of machines that lift liquids and gases. Graphical explanation of the equation for determining the total head developed by the pump.
Power and efficiency of the pump, fan. Cooperation of the pump and pipeline system.
Centrifugal pumps and fans. The principle of operation of centrifugal machines. Parallelograms of velocities at the entrance and exit of interblade channels.
Euler's equation. Theoretical and actual pressures developed by the impeller.
The influence of the angle ?2 on the pressure developed by the centrifugal machine. Types of impeller blades.The influence of the angle on the static and speed components of the theoretical pressure in relation to the three main types of working blades.Leads and leads. Hydraulic, volumetric and mechanical efficiency of a centrifugal machine. Multi-step and multi-flow centrifugal machines.
Theoretical characteristics of a centrifugal machine. Actual characteristics of a centrifugal machine at a constant frequency of rotation . Similarity of centrifugal machines. Formulas of proportionality. Recalculation of characteristics when changing the frequency of rotation of the machine shaft.
Testing the pump. Throttle regulation of supply at constant speed
Adjustment of feed by changing the frequency of rotation of the machine shaft. Adjustment of feed with rotary blades at the entrance to the impeller. Parallel connection of centrifugal pumps Series connection of centrifugal pumps.Cavitation. Measures preventing the occurrence of cavitation. Admissible suction height.The main parts of the construction of centrifugal pumps.Pumping equipment of TPP. NPP pumping equipment. Construction and operation of pump installations.
Basic concepts and applications of centrifugal fans. The pressure developed by the fan. The influence of self-gravity on the pressure developed by smoke.
Compressor machines Compressor machines. Basic concepts.
Types of compressors. Thermodynamics of the compressor process.
Compressor power. Efficiency coefficient of compressors. Cooling. Stepwise compression. Indicator diagram of a piston compressor. Harmful space. Supply of a piston compressor. The influence of harmful space on the supply of a reciprocating compressor.
The influence of the degree of pressure increase on the supply of the compressor.
Assessment methods and criteria: Methods of assessing the level of achievement of learning outcomes of education seekers are carried out with the help of an oral survey in lecture, practical, and laboratory classes.
Assessment of knowledge is provided by current control and semester examination control.
Current control: preparation and implementation of practical classes; preparation and execution of graphic and calculation works; preparation, execution, and protection of laboratory works.
Examination control is carried out during the examination session in written and oral form.
Current monitoring of practical and laboratory classes is carried out in order to identify the student's readiness for classes in the following forms:
• a selective oral survey before the start of classes;
• frontal verification of the performance of preliminary laboratory work;
• assessment of the student's activity in the process of classes, submitted proposals, original decisions, clarifications and definitions, additions to previous answers, etc.
Examination control is carried out in the form of a written and oral survey and/or test control.
The final control is carried out based on the results of the current control and semester examination control.
Критерії оцінювання результатів навчання: Current control - 30 points (laboratory classes - 15 points, practical 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.Mandrus V.I. Gidravlichni ta aerodinamichni mashini (nasosi, ventilyatori, gazoduvki, kompresori): Pidruchnik. –Lviv: «Magnoliya plyus», vidavec V.M.Picha, 2005. -340s.
2. Bezrodnij M. K. Teplovi nasosi ta yih vikoristannya. [Tekst] : posib. / M. K. Bezrodnij, I. I. ,Puhovij, D. S. Kutra. – K.: NTUU «KPI», 2013. – 289 s.
3. Gerasimov G.G. Nagnitachi ta teplovi dviguni. Navchalnij posibnik. – Rivne: NUVGP, 2012. 552 s.
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