laatst gewijzigd: 23/02/2006

 

 Coursecode: wb4300B

Coursename: Fundamentals of Fluid Machinery

 

ECTS creditpoints: 2

Faculty of  Mechanical, Maritime and Materials Engineering

Lecturer(s): Infante Ferreira, dr. ir. C. A. and Buijtenen, prof.ir. J.P. van

Tel.:  015-27 84894

Catalog data:

Pumps: Types and definitions. Centrifugal and positive displacement pumps. Compressors: Thermodynamic principles. Positive displacement compressors: reciprocating, helical screw, rolling piston, rotary vane, scroll compressors, roots-blowers and liquid ring compressors. Dynamic compressors.Turbines.

Course year: MSc 1st year

Period: 2B

Hours p/w: 2

Other hours:

Assessment: written

Assessm.period(s): 2B, 2B

(see academic calendar)

Prerequisites: wb1126, wb1224, wb1220

Follow up:

Detailed description of topics:

  • Pumps: Types. General definitions. Characteristics. Net positive suction head. Cavitation. Thermodynamic definitions.Unstable operation. Parallel en series operation. Capacity control.

  • Compressors: Application range. Compressor types. Thermodynamic principles. Theoretical work of compression. Thermodynamic efficiencies. Second law of thermodynamics. Exergy and exergy-loss. Energy and exergy flow diagrams. Multistage compression.

  • Positive displacement compressors: Working principle; characteristics, advantages, disadvantages and application range of the different types.

  • Reciprocating compressors: construction characteristics; compressor cycle; valves; capacity control; gas pulsations.

  • Rotary compressors: Helical screw compressors: compressor cycle; built-in volume ratio; capacity control and built-in volume ratio control. Rolling piston compressors. Rotary vane compressors. Scroll compressors. Roots-blowers. Liquid ring compressors.

  • Turbo machinery. Working principle. Characteristics and limits of operation. Dimensionless coefficients. "Off-design" operating points.

Course material:

  • O'Neill, P. A., "Industrial compressors", Butterworth-Heinemann Ltd, Oxford, 1993.

References from literature:

  • Frenkel, M.I., "Kolbenverdichter", VEB Verlag Technik, Berlin, 1969.

  • Rinder, L., "Schraubenverdichter", Springer, Wien, 1979.

  • Ferguson, T.B., "The centrifugal compressor stage", Butterworth, London, 1963.

Remarks (specific information about assesment, entry requirements, etc.):

Goals:

The student can:

  1. understand, reproduce and apply the thermodynamic definitions in relation to pumps

  2. recognize and apply pump characteristics including their net positive suction head behavior, parallel and series operation and capacity control

  3. understand, reproduce and apply the thermodynamic definitions in relation to compressors including first and second law analysis and multi-stage operation

  4. identify thermodynamic losses that take place in compressors and to explain how these losses are affected by the selected design

  5. explain the working principles of positive displacement and dynamic compressors

  6. describe the basic construction of the different positive displacement compressor types (including piston, helical screw, rolling piston, rotary vane, scroll, roots-blowers and liquid ring compressors) and their operation limits and capacity control capability

  7. model, in a simplified way, the processes taking place in reciprocating compressors taking piston displacement and (automatic) valve behavior into account

  8. quantify the effect of the built-in volume ratio on performance for the relevant compressor types

  9. recognize and apply characteristics of turbo machinery including their operation limits and capacity control

Design content:

This course provides the students with engineering knowledge to size pumps and compressors as part of a system. For reciprocating compressors a simplified design model is discussed.

Percentage of design: 80%.