| Mathematical Modeling of the Working Cycle of Oil Injected Rotary Twin Screw Compressor (2006) | |||||||||||||
Abstract | |||||||||||||
| Published Journal Applied Thermal Engineering This accepted postprint author version Archived Dspace nitr http dspace nitrkl dspace Mathematical Modeling the Working Cycle Oil Injected Rotary Twin Screw Compressor Seshaiah Subrata Ghosh Sahoo Sunil Sarangi Cryogenics and Gas dynamics Laboratory Mechanical Engineering Department National Institute Technology Rourkela Orissa State India Abstract Oil injected twin screw air and gas compressors are widely used for medium pressure applications many industries Low cost air compressors can adopted for compression helium and special gases leading significant cost saving Mathematical analysis oil injected twin screw compressor carried out the basis the laws perfect gas and standard thermodynamic relations Heat transfer coefficient required for computer simulation experimentally obtained and used performance prediction when the working medium being air helium mathematical model has been developed for calculating the compressor performance and for validating the results with experimental data The flow coefficients required for numerical simulation calculate leakage flow rates are obtained from efficiency verses clearance curves Effect some the compressor operating and design parameters power and volumetric efficiencies have been analyzed and presented Key words screw compressor oil injection heat transfer coefficient leakage flow coefficients NomenclatureE Mail address Corresponding author Tel fax seshuet yahoo com Heat transfer area Le. Oil injected twin-screw air compressors are widely used for medium pressure applications in cryogenic industries. Conversion of air compressors for helium applications is in great demand due to their inherent advantages. Mathematical analysis of oil injected twin-screw compressor is carried out on the basis of the laws of perfect gas, and standard thermodynamic relations. Heat transfer coefficient required for computer simulation is experimentally obtained and used in performance prediction, where the working medium being air or helium. A computer model is developed for calculating compressor performance and to validate the results with experimental data. The flow coefficients required for simulation to calculate leakage flow rates are obtained from efficiency versus clearance curves. Effect of design parameters of compressor on power and volumetric efficiencies are analyzed and presented. | |||||||||||||
Publication details | |||||||||||||
| |||||||||||||