Performance prediction methods for screw compressors

Numerical Investigation of an Oil-Free Liquid-Injected Screw Compressor with Ammonia-Water as Refrigerant for High Temperature Heat Pump Applications

“…The process of liquid injection in twin screw compressors was investigated by several authors, both theoretical and experimental, for different refrigerants and working conditions. For the theoretical investigation, a variety of models with mostly numerical approaches were developed using different methods [17]. As reviewed by Wang et al [18], these range from quasi-one-dimensional models to more complex computational fluid dynamics (CFD) models with varying degrees of complexity by incorporating different assumptions (homogenous or heterogenous model, losses considered, etc.)…”