Nu=2+0.6⋅Re0.5⋅Pr0.33cap N u equals 2 plus 0.6 center dot cap R e to the 0.5 power center dot cap P r to the 0.33 power Performance Calculation Metrics
The overall or total efficiency of the compressor system is the product of the volumetric, isentropic, and mechanical efficiencies. Nu=2+0
[ \fracdm_gd\theta = \sum_i \dotm_g,i \qquad (1) ] Nu=2+0
These include the clearances between the rotors themselves, and between the rotors and the housing. Orifice Flow: Nu=2+0
changes continuously as a function of the male rotor rotation angle. Computing this volume curve requires calculating the cross-sectional area of the interlobe space at each axial position:
#ScrewCompressor #Compressors #EngineeringModelling #Thermodynamics #RotatingEquipment #HVAC #ProcessEngineering #CFD #MechanicalEngineering
yf=xmsin(θm+θf)+ymcos(θm+θf)−asinθfy sub f equals x sub m sine open paren theta sub m plus theta sub f close paren plus y sub m cosine open paren theta sub m plus theta sub f close paren minus a sine theta sub f θmtheta sub m θftheta sub f represent the rotation angles of the respective rotors. Volume Curves
Nu=2+0.6⋅Re0.5⋅Pr0.33cap N u equals 2 plus 0.6 center dot cap R e to the 0.5 power center dot cap P r to the 0.33 power Performance Calculation Metrics
The overall or total efficiency of the compressor system is the product of the volumetric, isentropic, and mechanical efficiencies.
[ \fracdm_gd\theta = \sum_i \dotm_g,i \qquad (1) ]
These include the clearances between the rotors themselves, and between the rotors and the housing. Orifice Flow:
changes continuously as a function of the male rotor rotation angle. Computing this volume curve requires calculating the cross-sectional area of the interlobe space at each axial position:
#ScrewCompressor #Compressors #EngineeringModelling #Thermodynamics #RotatingEquipment #HVAC #ProcessEngineering #CFD #MechanicalEngineering
yf=xmsin(θm+θf)+ymcos(θm+θf)−asinθfy sub f equals x sub m sine open paren theta sub m plus theta sub f close paren plus y sub m cosine open paren theta sub m plus theta sub f close paren minus a sine theta sub f θmtheta sub m θftheta sub f represent the rotation angles of the respective rotors. Volume Curves