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Experimentally validated CO_2 ejector operation characteristic used in a numerical investigation of ejector cycle

机译:经实验验证的CO_2喷射器运行特性用于喷射器循环的数值研究

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摘要

Ejectors can be used to improve cycle efficiency of refrigeration and heat pump systems. For the simulation of ejector cycles it is required to accurately describe operation conditions of the ejector. In this work, an ejector operation characteristic for a CO_2 ejector based on experimental data is presented. Correlations for the ejector efficiency and the driving mass flow rate are used, which represent the experimental data within an error margin of 10% and 5%, respectively. These correlations are used to simulate a simple CO_2 ejector cycle in order to demonstrate their feasibility.
机译:喷射器可用于提高制冷和热泵系统的循环效率。为了模拟喷射器循环,需要准确地描述喷射器的操作条件。在这项工作中,提出了基于实验数据的CO_2喷射器的喷射器操作特性。使用喷射器效率和驱动质量流量的相关性,它们分别表示误差范围为10%和5%内的实验数据。这些相关性用于模拟简单的CO_2喷射器循环,以证明其可行性。

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