Experimental and CFD modelling of an ejector system for vehicle air conditioning
Experimental and CFD modelling of an ejector system for vehicle air conditioning
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发表时间：
1999
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通讯作者：
S. Riffat;P. Everitt
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作者：
S. Riffat;P. Everitt
本文介绍了蒸汽喷射器的设计及其验证。该喷射器是实验性喷射器循环的一部分，设计用于安装在小型机动车辆中以提供空调。来自发动机的冷却剂和/或废热可用于驱动喷射器循环。喷射器的设计源自 ESDU 系列中发布的指南。然后在实验室控制的测试台上制造和测试喷射器系统，该测试台模拟小型机动车辆中的条件。对喷射器进行计算流体动力学 (CFD) 分析，以确定其预期性能。通过 CFD 分析获得的结果与一系列操作条件下的实际测试数据进行了比较。使用喷射器的质量流量比进行比较。系统的性能系数 (COP R ) 针对所有测试的操作条件给出。
This paper describes the design of a steam jet ejector and its validation. The ejector formed part of an experimental ejector cycle designed to be installed in a small motor vehicle to provide air-conditioning. The coolant and/or exhaust heat from the engine could be used to drive the ejector cycle. The design of the ejector was derived from guidelines published in the ESDU series. The ejector system was then manufactured and tested on a laboratory controlled test rig that simulated conditions present in a small motor vehicle. Computational fluid dynamics (CFD) analysis was performed on the ejector to determine its expected performance. The results obtained through CFD analysis were compared with the practical test data for a range of operating conditions. Comparisons were made using the mass flow ratio of the ejector. The coefficient of performance (COP R ) of the system is presented for all operating conditions tested.