An Optimum Design for a Fast-Response Solenoid Valve: Application to a Limaçon Gas Expander

Dynamics Pub Date : 2024-06-03 DOI:10.3390/dynamics4020024
Md Shazzad Hossain, Ibrahim A. Sultan, Truong H. Phung, Apurv Kumar
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Abstract

Organic Rankine Cycle (ORC)–based small-scale power plants are becoming a promising instrument in the recent drive to utilize renewable sources and reduce carbon emissions. But the effectiveness of such systems is limited by the low efficiency of gas expanders, which are the main part of an ORC system. Limaçon-based expansion machines with a fast inlet control valve have great prospects as they could potentially offer efficiencies over 50%. However, the lack of a highly reliable and significantly fast control valve is hindering its possible application. In this paper, a push–pull solenoid valve is optimized using a stochastic optimization technique to provide a fast response. The optimization yields about 56–58% improvement in overall valve response. A performance comparison of the initial and optimized valves applied to a limaçon expander thermodynamic model is also presented. Additionally, the sensitivity of the valve towards a changing inlet pressure and expander rotor velocity is analyzed to better understand the effectiveness of the valve and provide clues to overall performance improvement.
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快速响应电磁阀的优化设计:利马松气体膨胀机的应用
基于有机郎肯循环(ORC)的小型发电厂正在成为近年来利用可再生能源和减少碳排放的一种有前途的工具。但是,作为 ORC 系统主要组成部分的气体膨胀机效率较低,限制了此类系统的有效性。基于利马逊的膨胀机配有快速进气控制阀,其效率可能超过 50%,因此前景广阔。然而,由于缺乏高可靠性和明显快速的控制阀,阻碍了其可能的应用。本文采用随机优化技术对推拉式电磁阀进行了优化,以提供快速响应。优化后,阀门的整体响应速度提高了约 56-58%。此外,还对应用于利马逊膨胀机热力学模型的初始阀门和优化阀门进行了性能比较。此外,还分析了阀门对入口压力和膨胀机转子速度变化的敏感性,以更好地了解阀门的有效性,并为整体性能改进提供线索。
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