A Construction Method of Refrigeration Cycles With Ejectors Based on Graph Theory and Heat Exchanger Separation
Constructing a high-efficiency refrigeration cycle is essential for developing efficient re-frigeration systems and achieving energy savings and emission reductions in the refrigeration industry.The traditional approaches to constructing refrigeration cycles are often based on expert experience,resulting in subjective and suboptimal cycle structure.This paper proposes an automatic method for constructing a refrigeration cycle with an ejector based on graph theory and heat exchanger separa-tion.The mathematical description of the ejector structure and cycle configuration are determined,and an algorithm for constructing a refrigeration cycle with an ejector is established.The proposed method is applied to construct a refrigeration cycle with an ejector and two-phase recuperator used for freezing.The constructed cycle improves the energy efficiency ratio by 23％compared to the classical refrigeration cycle with an ejector for recovering expansion work.
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