Design of Refrigeration Compressor Stage in R134a

Design Targets
To design a refrigeration compressor stage using R134a to improve performance of stage ( impeller, vaneless diffuser and volute) and to meet various flow rates and pressure ratio requirements by using trimming of the impeller.

Deliverables
Geometries of the full impeller, vaneless diffuser and volute
Geometries of meridional trimmed impellers
Geometries of spanwise trimmed impellers

Impact
State-of-the-art compressor stage and series of trimmed geometries meeting all design targets.

Flow Streamlines in the Compressor stage

Stage efficiency characteristics for the full and meridional trimmed impellers

Refridgeration-Compressor

Fig. 1:  Flow Streamlines in the Compressor stage

Fig. 2: Stage efficiency characteristics for the full and meridional trimmed impellers

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