1 Modeling, Design and Efficiency of Two-Phase Ejectors to Increase Cop of Transport Refrigeration Systems

Stefan Elbel, Ph.D., University of Illinois at Urbana-Champaign
Two-phase ejectors are an attractive replacement for conventional expansion devices due to the opportunity to recover expansion work that can be used to improve cycle efficiencies. This presentation covers important aspects of ejector modeling and will provide basic design guidelines. The different ejector components are explained and typical efficiency and performance metrics are introduced. The presentation also elaborates on different control options that enable the use of ejectors for efficient part load operation and operation at off-design.

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