.AixLib.Fluid.Movers.Compressors.Utilities.VolumetricEfficiency.SpecifiedEfficiencies.Poly_R134a_169_Reciprocating .AixLib.Fluid.Movers.Compressors.Utilities.VolumetricEfficiency.SpecifiedEfficiencies.Poly_R134a_169_ReciprocatingThis model contains a calculation procedure for the isentropic
efficiency presented by Darr and Crawford (1992).
| Reference | Formula | Refrigerants | Validity ncompressor |
Validity Πpressure |
|---|---|---|---|---|
| DarrAndCrawford1992 | ηvol = a1 + a2*n -
a3*epsRef*(ρinlIse/ρinl-1) -
a4*n*(ρinlIse/ρinl-1) |
R134a | 40 - 75 |
3 - 10 |
J.H. Darr and R.R. Crawford (1992): Modeling of an Automotive Air Conditioning Compressor Based on Experimental Data: ACRC Technical Report 14. Publisher: Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.