338-0510/02 – Pumping Engineering (ČerpT)
| Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 5 |
| Subject guarantor | doc. Ing. Sylva Drábková, Ph.D. | Subject version guarantor | doc. Ing. Sylva Drábková, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2013/2014 | Year of cancellation | |
| Intended for the faculties | FS | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
In this course students learn the technique of pumping equipment. The attention is focused mainly on the hydrodynamic pumps. The aim is to understand the basic function of the pump's behavior in different operating conditions, cavitation, radial and axial force characteristics of the pump. The course is also focused on the principles of design of main pump parts (impeller, coils, distributors), including the use of numerical modeling of flow.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
In this course students learn the technique of pumping equipment. Subject includes both theoretical and computational part. The attention is focused on pump parameters, typical features of the theoretical and actual characteristics of pumps, their changes with the operating parameters. Attention is paid to selection of a pump for the specified hydraulic system, control of the pump performance, definition of NPSH, pump cavitation, the basic components and constructions of pumps, typing and standardization of pumps. The laboratory work is aimed to investigation of pump characteristic curve, and also characteristics of two pumps of the same type in parallel and serial cooperation.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Vypracování protokolu k laboratornímu měření, vypracování samostatného
programu.
E-learning
Other requirements
Additional requirements for the student are not.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Introduction, pumping system, parameters, requirements for specific pump energy in terms of hydro-transport system, piping characteristics, system operating point.
2. Division of pumps, principle of operation of HS machines, piston pump - description, operation, definition of basic parameters, characteristics, characteristic properties, application area.
3. HS pumps with rotating working elements, description of operation, characteristics, field of application.
4. Principle of operation of HD machines, definition of basic parameters, characteristics, properties, field of application. Kinematic conditions in impeller, velocity triangles, Euler pump equation.
5. Theoretical pump characteristic for infinite number of blades, reduction of power due to finite number of blades, actual pump characteristic. Determination of pump characteristic by measurement. 6. Pump losses, disc losses, resulting efficiency, axial and radial force, its prediction and reduction.
7. Hydrodynamic similarity, conditions of HD similarity, similarity criteria, speed, specific speed, volumetric speed. Conversion relationships, meaning and use. Typing.
8. Similar operating states of the pump, speed control, impeller rotation, modeling, conversion from model to work, importance and use.
9. Hydraulic design of radial pump impeller
10. Basics of hydraulic design of stator parts of pump (volute, )
11. Influence of physical properties of pumped liquid on characteristics, characteristics of series and parallel pump cooperation.
12. Suction ability of the pump, cavitation, cavitation characteristics, determination of geodetic suction head of the pump. Testing of pumps.
13. Basic structural elements (seals, bearings, couplings)
14. Typical design of hydrodynamic pumps, classification in terms of actual specific energy.
Program of exercises and seminars + individual work of students
1. Working point of the pumping system - implementation of logic functions into the calculation, solver
2. Analysis of pump measured data, examples of regression of functions of several variables
3. Pumping system regulation, affine parabola, use of affine relations for calculation of pumping system range of regulation
4. Theoretical characteristics of pump for infinite number of blades, Euler pump equation, speed triangles
5. Radial force, calculation of radial force acting on impeller
6. Dimensionless pump characteristics, Erhart diagram, pumping efficiency
7. Recalculation of characteristics during pumping of viscous liquid
8. Laboratory measurements - measurement of the characteristics of one pump and two pumps of the same type in series and parallel cooperation
9. Design of impeller according to ČSN
10. Preparing of final project, design of impeller and spiral for given input parameters H, Q and n. Calculation in * .xlsx, drawing of impeller and spiral in * .dwg, eventually 3D geometric model
11. Individual work on the final project, consultation
12. Individual work on the final project, consultation
13. Individual work on the final project, consultation
14. Submission of the project, written credit work
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction