Positive Displacement Machines for Compressible Media

• Classification of fluid energy machines, classification of compressors, area of application
• Common fundamentals (change of state, compression process, dead space, degree of delivery, efficiency, internal compression, multistage applications)
• Operating principles of positive displacement compressors (reciprocating piston, diaphragm, sliding-vane, gate valve, liquid ring, scroll, roots, claw, screw compressors)
• Profile generation
• Standard atmosphere, humid gases, condensation, standard volume
• Comparison of characteristic lines of turbo and displacement machines, run-up
• Technical area of application, historical review
• Design of roots and screw compressors
• Lubrication, bearings, sealing
• Pressure pulsation and noise, design of a simple silencer
• Vibrations
• Pipes
• Control
• Refrigeration technology
• Vacuum application
• Expanding operation, flow measurement
• Acceptance rules and measurements, technical code, product safety

Fundamentals of Thermodynamics

• Lecture notes
• O'Neill, P.A.: Industrial Compressors, Theory and Equipment. Butterworth-Heinemann, Oxford ISBN 0 7506 0870 6, 1993Davidson, J.; Bertele, O.v. (Hrsg.): Process Fan and Compressor Selection. MechE Guides for the Process Industries. ISBN 0852988257, 1995
• Faragallah W.H., Surek D. (Hrsg.): Rotierende Verdrängermaschinen (Pumpen, Verdichter und Vakuumpumpen). 2nd edition, ISBN 3-929682-36-2, 2004
• Fister, W.: Fluidenergiemaschinen. Volume 1 1984, Volume 2 1986

An excursion to the Aerzener Maschinenfabrik (AM), including performance measurements on the test bench ("block course") is planned. The lecture takes place as a block course (usually fortnightly).

Oral exam