Coursecode: wb4300B

Coursename: Introduction to pumps and compressors

ECTS creditpoints:   2

Faculty of  Mechanical Engineering and Marine Technology

Lecturer(s): Infante Ferreira, dr. ir. C. A.

Tel.:  015-27 84894

Catalog data:

Introduction to pumps and compressors. Pumps. Types. Definitions. Centrifugal and positive displacement pumps. Compressors. Thermodynamic principles. Positive displacement compressors: reciprocating, helical screw, rolling piston, rotary vane and scroll compressors. Roots-blowers and liquid ring compressors. Radial turbocompressors.

Course year: MSc 1st year

Period: 2A

Hours p/w: 2

Other hours:

Assessment: written

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

(see academic calendar)

Prerequisites: wb4304

Follow up:

Detailed description of topics:

• Pump types.

• General definitions for pumps. Characteristics. Net positive suction head. Cavitation. Thermodynamic definitions.

• Centrifugal pumps. Characteristics. Unstable operation. Self-priming centrifugal pumps. Parallel en series operation of pumps. Capacity control. Variable speed drive.

• Positive displacement pumps.

• Introduction to 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. Helical screw compressors: compressor cycle SRM-compressor; 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.

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

Course material:

• Touber, S., "Pompen en compressoren", collegedictaat, Faculteit WbMT, TUD, 1996.

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

References from literature:

• Bos, G. A., "Stromingsmachines", Stenfert Kroese Uitgevers, Leiden, 1992.

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

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

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

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

Goals:

The purpose of this course is to give a deeper understanding in how thermodynamic definitions can be used to come to an identification and quantification of the irreversibilities in (specially) compressors. The working principles and specific characteristics of the most relevant pump and compressor types are explained and their application range identified. As an example, a simplified design model for reciprocating compressors is discussed.

Design content:

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

Percentage of design: 80%.