Sound and Vibrations of Positive Displacement Compressors

ISBN-13: 9780849370496 / Angielski / Twarda / 2006 / 343 str.

Werner Soedel

Opis

Positive displacement compressors are the most common type of compressor for commercial applications and among the most important in industrial use. Effective control of noise and vibration stems from a deep understanding of their sources, effects, and behavior in the compressor's various components. Based on more than 30 years of research and practical experience, Sound and Vibrations of Positive Displacement Compressors is the first book to combine theory and design guidelines dedicated solely to compressors.
After introducing the sound- and vibration-producing mechanisms common to different types of compressors, the author discusses free and forced vibrations of compressor housing shells, mainly for hermetically sealed designs. He then examines vibration in casings and other components, such as suction and discharge tubes, along with surging in coil springs. Detailed chapters explore the design and vibrations of automatic plate or reed valves as well as the analysis and design of suction and discharge mufflers, while the final chapters cover multidimensional acoustics, measurements and source identification, electromotors, and the influence of lubrication oil on sound and vibrations.
Illustrated by numerous diagrams and several case studies, Sound and Vibrations of Positive Displacement Compressors guides in the analysis and design of compressors for minimal sound and vibration production and suggests various noise control measures.

Spis treści

INTRODUCTIONGeneralThe Compression ProcessValvesSuction and Discharge Manifolds and PipesCasingHermetic Housing ShellVibration Isolation SpringsOil SumpOVERVIEW OF NOISE SOURCE AND TRANSMISSION MECHANISMS BY TYPE OF COMPRESSORReciprocating CompressorsRotary Vane CompressorRolling Piston CompressorsScroll CompressorScrew CompressorNATURAL FREQUENCIES AND MODES OF COMPRESSOR HOUSINGSEquations of MotionBoundary ConditionsNatural Frequencies and ModesFurther SimplificationVibration Localization at End CapsCOMPRESSOR HOUSINGS THAT ARE NOT AXISYMMETRICMode Splitting Caused by a Mass or StiffnessMode Splitting Caused by OvalnessExample of Experimentally Obtained Housing ModesMODIFICATIONS OF HOUSING NATURAL FREQUENCIES AND MODESStiffening of Compressor HousingThe Influence of Residual StressesFORCED VIBRATION OF COMPRESSOR HOUSING (SHELL)Modal Series Expansion ModelSteady-State Harmonic ResponseHousing Dynamics in Terms of Modal Mass, Stiffness, Damping, and ForcingSteady-State Response of Shells to Periodic ForcingRemarks About Dissipative DampingDynamic AbsorbersFriction DampingFREE AND FORCED VIBRATIONS OF COMPRESSOR CASINGSThe Three-Dimensional Equations of Motion for an Elastic SolidFree and Forced VibrationsSteady-State Harmonic ResponseResponse of the Casing to ImpactSteady-State Response of the Compressor Casing to Periodic ForcingVIBRATIONS OF OTHER STRUCTURAL COMPONENTS OF A COMPRESSORVibration and Force Transmission of Discharge or Suction TubesVibration Isolation Considering Idealized SpringsSurging in Coil Springs Interfering with Vibration IsolationSOUND AND VIBRATION OF COMPRESSOR VALVESRemarks About Types of Compressors and Their ValvingA Simplified Approach to Understanding Valve DesignUseful Valve CalculationsValve DynamicsStresses in ValvesSUCTION OR DISCHARGE SYSTEM GAS PULSATIONS AND MUFFLERSReducing Valve NoiseReactive Mufflers Using the Helmholtz SimplificationThe Continuous System Approach Applied to Tubelike Compressor Suction and Discharge ManifoldsTypical Behavior of Simple Compressor Suction or Discharge MufflersMULTIDIMENSIONAL COMPRESSOR SOUNDThree-Dimensional Acoustic Wave EquationSound Radiation from the Compressor Housing (or Casing)Gas Pulsations in the Cavity between the Compressor Casing and HousingREMARKS ON SOUND AND VIBRATION MEASUREMENTS AND SOURCE IDENTIFICATIONRooms for Measuring SoundRepeatability of MeasurementsIdentification of Sound and Vibration MechanismsMISCELLANEOUS SOUND AND VIBRATION SOURCES OR EFFECTSElectromotorsLubrication OilREFERENCESINDEX

O autorze

Werner Soedel