This book contains the papers presented at the 7th International Conference on Compressors and their Systems at City University London in conjunction with the IMECHE. This conference is the ultimate global forum for reviewing the latest developments and novel approaches in compressor research. It features contributions from equipment manufacturers, suppliers, users and research organisations; these papers present developments in air, gas and refrigeration compressors; vacuum pumps; expanders; and related systems and components. Papers cover the design, development and operation of a wide range of compressors and expanders. Equipment manufacturers, suppliers, users and research organisations are all represented. Aspects covered include: present and future developments in scroll compressors; design and optimisation of screw compressors; latest thinking in oscillating and vane compressors; improving the function of valves; latest research in dynamic compressors; detailed analysis of reciprocating compressors; improved accuracy and usefulness of modelling techniques; developing better control of centrifugal compressors; and reducing unwanted noise and vibration.
1. Cover image - p. Cover 2. Title page - p. Cover 3. Table of Contents - p. Cover 4. Copyright - p. Cover 5. Sponsors - p. iv 6. Foreword - p. xi 7. Introductory Papers - p. 1 8. Chapter 1: Use of finite element and computational fluid dynamics analyses in the development of positive displacement compressor simulations - p. 1 9. Chapter 2: Successful trials of turbo-boosting of positive displacement compressors - p. 13 10. Turbo Compressors - p. 26 11. Chapter 3: Design rationalisation for centrifugal turboblowers in the water industry - p. 26 12. Chapter 4: New multistage axial compressor and chiller development for water as refrigerant - p. 38 13. Chapter 5: Investigation of the gas flow in the vaneless diffusers of the centrifugal compressors - p. 49 14. Chapter 6: The design of vaned diffusers of centrifugal compressors based on the given velocity distribution - p. 60 15. Chapter 7: OMNI turbo – a high efficiency, nested two-stage impeller - p. 61 16. Chapter 8: Optimisation of the high vacuum side channel pump - p. 79 17. Chapter 9: The TurboClaw® compressor for engine downsizing by twin-charging - p. 92 18. Chapter 10: Study of IGV and rotor interactions in a cooling axial fan - p. 99 19. Heat Pump and Refrigeration - p. 115 20. Chapter 11: Development of R744 two stage compressor for commercial heat pump water heater - p. 115 21. Chapter 12: Theoretical and experimental analysis of the superheating in heat pump compressors - p. 126 22. Chapter 13: Methodology of performance calculation of condensing unit thanks to the compressor - p. 135 23. Reciprocating Compressors (Valves) - p. 146 24. Chapter 14: Industrial reed valve development using a virtual prototyping approach - p. 146 25. Chapter 15: Accounting for backflow condition on effective force and flow areas of reed type valves - p. 157 26. Chapter 16: Influence of suction valve parameter on volumetric efficiency and power loss – valve design chart - p. 166 27. Chapter 17: Simulation of the flow through automatic valves of hermetic compressors by the immersed boundary method approach - p. 179 28. Refrigeration - p. 189 29. Chapter 18: Theoretical studies of a fixed vane rotary compressor - p. 189 30. Chapter 19: Compressors performances with natural and low GWP refrigerants - p. 201 31. Chapter 20: Numerical prediction of turbulent flow and heat transfer in the suction muffler of a small reciprocating compressor - p. 209 32. Chapter 21: Thermodynamic assessment of an innovative suction muffler for hermetic reciprocating compressors - p. 219 33. Chapter 22: Experimental performance of carbon dioxide compressor with parallel compression - p. 230 34. Chapter 23: Enhancement of heat transfer rate in fractional horse power condensing unit - p. 238 35. Chapter 24: The influence of refrigerant charge on the starting process of a small reciprocating compressor system - p. 249 36. Chapter 25: An experimental study of performances of bottle cooler using carbon dioxide as refrigerant - p. 260 37. Reciprocating and Variable Speed Compressors - p. 269 38. Chapter 26: Theoretical and experimental study on stepless capacity control system of reciprocating compressor - p. 269 39. Chapter 27: Energy saving in drives using ZCT ZVT DC-DC converters, PWM inverters in variable speed compressor applications - p. 280 40. Chapter 28: Modal and vibration analysis of reciprocating compressor crankshaft system - p. 294 41. Chapter 29: The design, manufacture and system integration of the control system for the Bu Attifel low pressure gas transmission compressors - p. 303 42. Manufacturing - p. 314 43. Chapter 30: The use of a unique tool for manufacturing screw compressor rotors of varying configuration, centre distance and helix angle - p. 314 44. Chapter 31: Method for the correction of localised lead errors during screw rotor manufacture using CNC grinding machines - p. 323 45. Chapter 32: Developments in the productive grinding of screw rotors and other helical parts in response to user feedback - p. 335 46. Screw Compressors - p. 343 47. Chapter 33: Evaluation of various turbulence models in predicting screw compressor flow processes by CFD - p. 343 48. Chapter 34: Experimental and theoretical investigation of screw machines as vacuum blowers - p. 357 49. Chapter 35: Numerical optimization of an injection volumetric expander for use in waste heat recovery organic Rankine cycle - p. 374 50. Chapter 36: Fluid dynamic and thermodynamic modelling of multiphase screw pumps, operating on the threshold of an exclusive gas compression - p. 383 51. Chapter 37: Consideration of clearances in the design of screw compressor rotors - p. 400 52. Chapter 38: Performance prediction methods for screw compressors - p. 410 53. Chapter 39: Rotor enhancement for improved screw compressor performance - p. 420 54. Chapter 40: Reduction of pressure loss in suction flow passage of oil flooded screw compressors - p. 427 55. Chapter 41: A new approach to three-dimensional intermesh clearance calculation - p. 439 56. Chapter 42: Improvement of volumetric efficiency for screw compressors using inertial charging - p. 454 57. Scroll and Turbo Compressors - p. 465 58. Chapter 43: Development of high efficiency scroll compressor - p. 465 59. Chapter 44: Scroll compressors and intermediate valve ports - p. 475 60. Rotary Compressors - p. 488 61. Chapter 45: Design limitations and flexibilities of the revolving vane compressor - p. 488 62. Chapter 46: The Blade Compressor™: geometry, performance and applications - p. 498 63. Author Index - p. 512
This book contains the papers presented at the 7th International Conference on Compressors and their Systems at City University London in conjunction with the IMECHE. This conference is the ultimate global forum for reviewing the latest developments and novel approaches in compressor research. It features contributions from equipment manufacturers, suppliers, users and research organisations; these papers present developments in air, gas and refrigeration compressors; vacuum pumps; expanders; and related systems and components. Papers cover the design, development and operation of a wide range of compressors and expanders. Equipment manufacturers, suppliers, users and research organisations are all represented. Aspects covered include: present and future developments in scroll compressors; design and optimisation of screw compressors; latest thinking in oscillating and vane compressors; improving the function of valves; latest research in dynamic compressors; detailed analysis of reciprocating compressors; improved accuracy and usefulness of modelling techniques; developing better control of centrifugal compressors; and reducing unwanted noise and vibration.
1. Cover image - p. Cover 2. Title page - p. Cover 3. Table of Contents - p. Cover 4. Copyright - p. Cover 5. Sponsors - p. iv 6. Foreword - p. xi 7. Introductory Papers - p. 1 8. Chapter 1: Use of finite element and computational fluid dynamics analyses in the development of positive displacement compressor simulations - p. 1 9. Chapter 2: Successful trials of turbo-boosting of positive displacement compressors - p. 13 10. Turbo Compressors - p. 26 11. Chapter 3: Design rationalisation for centrifugal turboblowers in the water industry - p. 26 12. Chapter 4: New multistage axial compressor and chiller development for water as refrigerant - p. 38 13. Chapter 5: Investigation of the gas flow in the vaneless diffusers of the centrifugal compressors - p. 49 14. Chapter 6: The design of vaned diffusers of centrifugal compressors based on the given velocity distribution - p. 60 15. Chapter 7: OMNI turbo – a high efficiency, nested two-stage impeller - p. 61 16. Chapter 8: Optimisation of the high vacuum side channel pump - p. 79 17. Chapter 9: The TurboClaw® compressor for engine downsizing by twin-charging - p. 92 18. Chapter 10: Study of IGV and rotor interactions in a cooling axial fan - p. 99 19. Heat Pump and Refrigeration - p. 115 20. Chapter 11: Development of R744 two stage compressor for commercial heat pump water heater - p. 115 21. Chapter 12: Theoretical and experimental analysis of the superheating in heat pump compressors - p. 126 22. Chapter 13: Methodology of performance calculation of condensing unit thanks to the compressor - p. 135 23. Reciprocating Compressors (Valves) - p. 146 24. Chapter 14: Industrial reed valve development using a virtual prototyping approach - p. 146 25. Chapter 15: Accounting for backflow condition on effective force and flow areas of reed type valves - p. 157 26. Chapter 16: Influence of suction valve parameter on volumetric efficiency and power loss – valve design chart - p. 166 27. Chapter 17: Simulation of the flow through automatic valves of hermetic compressors by the immersed boundary method approach - p. 179 28. Refrigeration - p. 189 29. Chapter 18: Theoretical studies of a fixed vane rotary compressor - p. 189 30. Chapter 19: Compressors performances with natural and low GWP refrigerants - p. 201 31. Chapter 20: Numerical prediction of turbulent flow and heat transfer in the suction muffler of a small reciprocating compressor - p. 209 32. Chapter 21: Thermodynamic assessment of an innovative suction muffler for hermetic reciprocating compressors - p. 219 33. Chapter 22: Experimental performance of carbon dioxide compressor with parallel compression - p. 230 34. Chapter 23: Enhancement of heat transfer rate in fractional horse power condensing unit - p. 238 35. Chapter 24: The influence of refrigerant charge on the starting process of a small reciprocating compressor system - p. 249 36. Chapter 25: An experimental study of performances of bottle cooler using carbon dioxide as refrigerant - p. 260 37. Reciprocating and Variable Speed Compressors - p. 269 38. Chapter 26: Theoretical and experimental study on stepless capacity control system of reciprocating compressor - p. 269 39. Chapter 27: Energy saving in drives using ZCT ZVT DC-DC converters, PWM inverters in variable speed compressor applications - p. 280 40. Chapter 28: Modal and vibration analysis of reciprocating compressor crankshaft system - p. 294 41. Chapter 29: The design, manufacture and system integration of the control system for the Bu Attifel low pressure gas transmission compressors - p. 303 42. Manufacturing - p. 314 43. Chapter 30: The use of a unique tool for manufacturing screw compressor rotors of varying configuration, centre distance and helix angle - p. 314 44. Chapter 31: Method for the correction of localised lead errors during screw rotor manufacture using CNC grinding machines - p. 323 45. Chapter 32: Developments in the productive grinding of screw rotors and other helical parts in response to user feedback - p. 335 46. Screw Compressors - p. 343 47. Chapter 33: Evaluation of various turbulence models in predicting screw compressor flow processes by CFD - p. 343 48. Chapter 34: Experimental and theoretical investigation of screw machines as vacuum blowers - p. 357 49. Chapter 35: Numerical optimization of an injection volumetric expander for use in waste heat recovery organic Rankine cycle - p. 374 50. Chapter 36: Fluid dynamic and thermodynamic modelling of multiphase screw pumps, operating on the threshold of an exclusive gas compression - p. 383 51. Chapter 37: Consideration of clearances in the design of screw compressor rotors - p. 400 52. Chapter 38: Performance prediction methods for screw compressors - p. 410 53. Chapter 39: Rotor enhancement for improved screw compressor performance - p. 420 54. Chapter 40: Reduction of pressure loss in suction flow passage of oil flooded screw compressors - p. 427 55. Chapter 41: A new approach to three-dimensional intermesh clearance calculation - p. 439 56. Chapter 42: Improvement of volumetric efficiency for screw compressors using inertial charging - p. 454 57. Scroll and Turbo Compressors - p. 465 58. Chapter 43: Development of high efficiency scroll compressor - p. 465 59. Chapter 44: Scroll compressors and intermediate valve ports - p. 475 60. Rotary Compressors - p. 488 61. Chapter 45: Design limitations and flexibilities of the revolving vane compressor - p. 488 62. Chapter 46: The Blade Compressor™: geometry, performance and applications - p. 498 63. Author Index - p. 512
