7th International Conference on Compressors and their Systems 2011

The Institution of Mechanical Engineers (IMechE) is one of the leading professional engineering institutions in the world.

• Cover imageTitle pageCopyrightSponsorsForewordIntroductory PapersChapter 1: Use of finite element and computational fluid dynamics analyses in the development of positive displacement compressor simulationsABSTRACT1 INTRODUCTION2 SCREW COMPRESSOR DISCHARGE PORT3 SCROLL COMPRESSOR LEAKAGE4 RECIPROCATING COMPRESSOR PRESSURE PULSATION5 CONCLUSIONSACKNOWLEDGEMENTSChapter 2: Successful trials of turbo-boosting of positive displacement compressorsABSTRACT1 BACKGROUND2 APPLICATION 1- TURBOCOMPRESSOR WITH PISTON COMPRESSOR3 APPLICATION 2: TURBOCOMPRESSOR WITH WATER-INJECTED SCREW COMPRESSOR4 CONCLUSIONS AND DISCUSSIONS5 ACKNOWLEDGEMENTSTurbo CompressorsChapter 3: Design rationalisation for centrifugal turboblowers in the water industryABSTRACTNOMENCLATURE1 BACKGROUND2 OPPORTUNITY3 THE DESIRED STATE4. SOLUTION5 IMPLEMENTATION6 RESULTS7 FUTURE ACTIONSChapter 4: New multistage axial compressor and chiller development for water as refrigerantABSTRACT1 INTRODUCTION2 FEASIBILITY STUDY3 DESIGN AND DEVELOPMENT OF THE AXIAL COMPRESSORS4 TEST OF COMPRESSOR AND CHILLER5 EXPECTED PERFORMANCE AND CHILLER DATA6 PERSPECTIVESChapter 5: Investigation of the gas flow in the vaneless diffusers of the centrifugal compressorsABSTRACTNOTATIONSubscripts1 INTRODUCTION2 CALCULATION PROCEDURE3 MODEL VERIFICATION4 CONCLUSIONSChapter 6: The design of vaned diffusers of centrifugal compressors based on the given velocity distributionABSTRACTNOMENCLATURESubscripts1 INTRODUCTION2 THE PROBLEM DEFINITION3 MATHEMATICAL MODEL4 THE DESIGN METHOD5 EXPERIMENTAL DATA6 CONCLUSIONSChapter 7: OMNI turbo – a high efficiency, nested two-stage impellerABSTRACT1 INTRODUCTION2 TWO STAGE NESTED IMPELLER COMPRESSION STAGE - OMNI3 STAGE ANALYSIS4 MANUFACTURE OF IMPELLER AND ASSOCIATED PARTS5 A SINGLE SHAFT, HIGH SPEED MICRO-COMPRESSOR USING OMNI TURBO6 CONCLUSIONSChapter 8: Optimisation of the high vacuum side channel pumpABSTRACT1 INTRODUCTION2 DESIGN OF THE PUMP3 DESIGN OF A REGENERATIVE PUMP STAGE4 PERFORMANCE OF THE PUMP5 VARIATION OF THE ROTOR BLADE GEOMETRY6 VARIATION OF THE NUMBER OF BLADES7 MEMBRANE PUMP AS A BACKING PUMP8 MEASUREMENTS WITH DIFFERENT GASES9 EQUATIONS FOR THE CALCULATION OF REGENERATIVE PUMPS10 CONCLUSIONChapter 9: The TurboClaw® compressor for engine downsizing by twin-chargingABSTRACT1 INTRODUCTION2 INNOVATION3 MOTOR AND DRIVE TECHNOLOGY4 EXPERIMENTAL VALIDATION5 ACKNOWLEDGEMENTS6 CONCLUSIONChapter 10: Study of IGV and rotor interactions in a cooling axial fanABSTRACT1 INTRODUCTION2 STEADY SIMULATIONS3 UNSTEADY SIMULATIONS4 EFFECT OF AXIAL GAP5 CONCLUSIONHeat Pump and RefrigerationChapter 11: Development of R744 two stage compressor for commercial heat pump water heaterABSTRACT1 INTRODUCTION2 BASIC STRUCTURE OF DEVELOPED COMPRESSOR3 EFFICIENCY IMPROVEMENT4 RELIABILITY IMPROVEMENT5 APPLICATION OF THE DEVELOPED SCROTARY COMPRESSOR INTO COMMERCIAL HEAT PUMP WATER HEATER6 CONCLUSIONSChapter 12: Theoretical and experimental analysis of the superheating in heat pump compressorsABSTRACTNOMENCLATURE1 INTRODUCTION2 THEORETICAL DEVELOPMENT3 RESULTS AND DISCUSSIONS4 CONCLUSIONS5 ACKNOWLEDGEMENTChapter 13: Methodology of performance calculation of condensing unit thanks to the compressorABSTRACTNOMENCLATURE1 INTRODUCTION2 DESCRIPTION OF THE MATHEMATICAL SYSTEM3 MODEL VALIDATION4 CALCULATION TOOL5 CONCLUSIONReciprocating Compressors (Valves)Chapter 14: Industrial reed valve development using a virtual prototyping approachABSTRACT1 INTRODUCTION2 STATE OF THE ART IN REED VALVE SIMULATION3 VALVE DESIGN4 SIMULATION5 CONCLUSIONACKNOWLEDGEMENTSChapter 15: Accounting for backflow condition on effective force and flow areas of reed type valvesABSTRACT1 INTRODUCTION2 MATHEMATICAL MODEL3 RESULTS4 CONCLUSIONSACKNOWLEDGEMENTSChapter 16: Influence of suction valve parameter on volumetric efficiency and power loss – valve design chartABSTRACTNOMENCLATURE1 INTRODUCTION2 MODEL AND RESULTS EXAMPLES3 VALVE PERFORMANCES AND EVAPORATING TEMPERATURE4 SENSITIVITY ANALYSIS5 VALVE DESIGN PROCEDURE AND CHART6 CONCLUSIONSChapter 17: Simulation of the flow through automatic valves of hermetic compressors by the immersed boundary method approachABSTRACT1 INTRODUCTION2 MATHEMATCAL FORMULATION3 NUMERICAL METHOD4 RESULTS AND DISCUSSIONS5 CONCLUSIONSRefrigerationChapter 18: Theoretical studies of a fixed vane rotary compressorABSTRACTNOMENCLATURE1 INTRODUCTION2 GEOMETRY MODEL3 FORCE ANALYSIS4 THERMODYNAMIC MODEL5 RESULTS AND DISCUSSIONS6 CONCLUSIONChapter 19: Compressors performances with natural and low GWP refrigerantsABSTRACTNOMENCLATURE1 INTRODUCTION2 NEW REFRIGERANTS PROPERTIES3 EXPERIMENTAL TESTS4 CONCLUSIONChapter 20: Numerical prediction of turbulent flow and heat transfer in the suction muffler of a small reciprocating compressorABSTRACT1 INTRODUCTION2 EXPERIMENTAL SETUP3 NUMERICAL SOLUTION4 RESULTS AND DISCUSSION5 CONCLUSIONSACKNOWLEDGEMENTSChapter 21: Thermodynamic assessment of an innovative suction muffler for hermetic reciprocating compressorsABSTRACT1 INTRODUCTION2 THEORETICAL BACKGROUND3 THE REGENERATIVE HEAT EXCHANGER4 SIMULATION STRATEGY5 SIMULATION RESULTS6 EXPERIMENTAL RESULTS7 CONCLUSIONACKNOWLEDGEMENTSChapter 22: Experimental performance of carbon dioxide compressor with parallel compressionABSTRACTNOMENCLATURESubscripts1 INTRODUCTION2 REFRIGERATION SYSTEMS WITH CO23 RECIPROCATING COMPRESSOR FOR PARALLEL COMPRESSION4 TESTS AND RESULTS5 SYSTEM PERFORMANCE WITH PARALLEL COMPRESSOR6 CONCLUSIONChapter 23: Enhancement of heat transfer rate in fractional horse power condensing unitABSTRACT1 INTRODUCTION2 PROBLEM SET UP3 DESCRITIZATION & BOUNDARY CONDITIONS4 EXPERIMENTAL SETUP5 ANALYTICAL STUDY6 RESULTS AND DISCUSSION7 STRUCTURAL ANALAYSIS8 DESIGN OF EXPERIMENTS9 CONCLUSIONChapter 24: The influence of refrigerant charge on the starting process of a small reciprocating compressor systemABSTRACTNOMENCLATUREGreekletters1 INTRODUCTION2 MODELLING3 METHODOLOGY4 RESULTS5 CONCLUSIONSACKNOWLEDGEMENTSChapter 25: An experimental study of performances of bottle cooler using carbon dioxide as refrigerantABSTRACT1 INTRODUCTION2 EXPERIMENTAL SYSTEM3 EXPERIMENTAL RESULTS AND DISCUSSION4 CONCLUSIONACKNOWLEDGEMENTReciprocating and Variable Speed CompressorsChapter 26: Theoretical and experimental study on stepless capacity control system of reciprocating compressorABSTRACTNOMENCLATURE1 INTRODUCTION2 STEPLESS CAPACITY CONTROL SYSTEM3 THEORETICAL MODELS4 EXPERIMENT RESEARCH5 RESULTS AND DISCUSSION6 CONCLUSIONSACKNOWLEDGEMENTChapter 27: Energy saving in drives using ZCT ZVT DC-DC converters, PWM inverters in variable speed compressor applicationsABSTRACTINTRODUCTION2 VARIABLE SPEED DRIVE TECHNOLOGY – AC COMPRESSORS3 VARIABLE SPEED DRIVE TECHNOLOGY: ZCTF PWM DC CONVERTER-DC COMPRESSORS DRIVES4 TIME INTERVALS FOR ZCTF PWM TECHNIQUE5 CONSIDERATIONS6 ENERGY CONSUMPTION AND CO2 EMISSION7 CONCLUSIONSChapter 28: Modal and vibration analysis of reciprocating compressor crankshaft systemABSTRACTNOTATION1 INTRODUCTION2 MODELING3 ANALYSIS4 APPLICATION5 CONCLUSION6. ACKNOWLEDGEMENTChapter 29: The design, manufacture and system integration of the control system for the Bu Attifel low pressure gas transmission compressorsABSTRACT1 INTRODUCTION2 DOCUMENTATION3 CONTROL SYSTEM DESIGN4 MANUFACTURING RESTRICTIONS5 CONTROL SYSTEM TESTINGManufacturingChapter 30: The use of a unique tool for manufacturing screw compressor rotors of varying configuration, centre distance and helix angleABSTRACT1 INTRODUCTION2 PROFILE GENERATION FROM A RACK3 A UNIQUE RACK AS A BASIS FOR CALCULATION OF DIFFERENT PROFILES4 CALCULATION OF THE PROFILES BASED ON THEIR ORIGINAL RACKS5 PERFORMANCE CALCULATION6 CONCLUSIONChapter 31: Method for the correction of localised lead errors during screw rotor manufacture using CNC grinding machinesABSTRACTNOTATION1 INTRODUCTION2 CALCULATION OF WORK ROTATION ADJUSTMENTS3 TESTING AND ANALYSIS OF RESULTS4 CONCLUSIONSChapter 32: Developments in the productive grinding of screw rotors and other helical parts in response to user feedbackABSTRACT1 INTRODUCTION2 CHANGING MARKET REQUIREMENTS3 DESIGN FEATURES4 SUMMARY AND CONCLUSIONSACKNOWLEDGEMENTSScrew CompressorsChapter 33: Evaluation of various turbulence models in predicting screw compressor flow processes by CFDABSTRACT1 INTRODUCTION2 CFD ANALYSIS OF SCREW COMPRESSOR3 EVALUATION OF RESULTS4 CONCLUSIONSChapter 34: Experimental and theoretical investigation of screw machines as vacuum blowersABSTRACTSYMBOLS1 INTRODUCTION2 THE SCREW VACUUM PUMP3 EXPERIMENTAL INVESTIGATION4 THEORETICAL INVESTIGATIONS5 SUMMARYChapter 35: Numerical optimization of an injection volumetric expander for use in waste heat recovery organic Rankine cycleABSTRACTNOMENCLATURE1 INTRODUCTION2 CONFIGURATION3 EXPANDER INLET EXERGY FLOW RATE4 VAPOUR INJECTION EXPANDER4.3 Injection port position5 CONCLUSIONChapter 36: Fluid dynamic and thermodynamic modelling of multiphase screw pumps, operating on the threshold of an exclusive gas compressionABSTRACTNOMENCLATURE1 INTRODUCTION2 CHAMBER-BASED SCREW PUMP MODEL3 MODELLING OF MULTIPHASE GAP FLOWS4 MODELLING OF HEAT TRANSFER AND HEAT CONDUCTION5 EXPERIMENTAL APPARATUS6 EXPERIMENTAL AND THEORETICAL RESULTSCONCLUSIONSACKNOWLEDGEMENTSChapter 37: Consideration of clearances in the design of screw compressor rotorsABSTRACT1 INTRODUCTION2 OPERATIONAL CLEARANCES3 MEASURING OPERATIONAL CLEARANCES4 PERFORMANCE PREDICTION5 APPLICATION TO DIFFERENT WORKING FLUIDSCONCLUSIONSChapter 38: Performance prediction methods for screw compressorsABSTRACTNOMENCLATUREGreek CharactersAbbreviations1 INTRODUCTION2 PERFORMANCE CHARACTERISTICS3 PERFORMANCE PREDICTION METHODS4 COMPARISON OF DIFFERENT METHODSCONCLUSIONSChapter 39: Rotor enhancement for improved screw compressor performanceABSTRACT1 INTRODUCTION2 ROTOR ENHANCEMENT3 DISCUSSION OF RESULTS4 CONCLUSIONACKNOWLEDGEMENTChapter 40: Reduction of pressure loss in suction flow passage of oil flooded screw compressorsABSTRACT1 INTRODUCTION2 PRESSURE LOSS FACTORS IN SUCTION FLOW PASSAGE3 VISCOUS FRICTION4 INTERFERENCE OF SUCTION AIR AND LUBRICANT OIL5 APPLICATION OF IMPROVED GEOMETRY TO ACTUAL COMPRESSOR6 CONCLUSIONChapter 41: A new approach to three-dimensional intermesh clearance calculationAstract:1 INTRODUCTION2 STATE OF THE ART3 SURFACE REPRESENTATION OF ROTORS USING NURBS4 CALCULATION OF THE LINE OF ACTION5 APPLICATION AND COMPARISONChapter 42: Improvement of volumetric efficiency for screw compressors using inertial chargingABSTRACT1 INTRODUCTION2 COMPRESSOR STRUCTURE3 MODELLING AND CFD ENVIRONMENTS4 CFD SIMULATION RESULTS5 EXPERIMENTAL VERIFICATION6 CONCLUSIONACKNOWLEDGEMENTScroll and Turbo CompressorsChapter 43: Development of high efficiency scroll compressorABSTRACT1 INTRODUCTION2 STRUCTURE OF SCROLL COMPRESSOR3 COMPRESSOR EFFICIENCY IN RESPONSE TO OIL SUPPLY4 NEW VALVE SYSTEM TO REDUCE OVER-COMPRESSION5 CONCLUSIONChapter 44: Scroll compressors and intermediate valve portsABSTRACT1 INTRODUCTION2 BENEFIT OF IDV'S INTERNAL LOADS3 IMPACT ON THE OLDHAM COUPLING4 CONCLUSIONRotary CompressorsChapter 45: Design limitations and flexibilities of the revolving vane compressorABSTRACTNOMENCLATURE1 INTRODUCTION2 ECCENTRICITY3 VANE SLOT GEOMETRY4 COMPRESSOR COMPONENTS DESIGN5 CONCLUSIONSChapter 46: The Blade Compressor™: geometry, performance and applicationsABSTRACT1 INTRODUCTION2 THE PROBLEM WITH COMPRESSORS2.2.7 Conclusion3 THE BLADE COMPRESSOR™ SOLUTION4 CONCEPTUAL ADVANTAGES TO THE BLADE COMPRESSOR™4.5.1 Conclusion5 CURRENT TECHNOLOGY STATUS6 PERFORMANCE AND RESULTS AGAINST CORE CRITERIA7 COMMERCIAL OPPORTUNITIES, IP AND FUTURE ROADMAP8 CONCLUSIONAuthor Index