Analytical investigations on different air injection angles to optimize power output of a vaned-type air turbine
Analytical investigations on different air injection angles to optimize power output of a vaned-type air turbine
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不同空气喷射角度优化叶片式空气涡轮机功率输出的分析研究
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
O. Singh
中科院分区：
文献类型：
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作者：
B. R. Singh;O. Singh
摘要鉴于化石燃料储量的迅速枯竭，目前的主要推动力已放在寻找替代能源和成本效益高的能源上。压缩空气被用作产生轴功的工作流体。空气可以通过使用自然能源例如风能、液压能和/或太阳能来压缩;因此，压缩空气的可用性及其在空气涡轮机中的利用是完全无污染的。本文论述了一种小容量压气驱动的叶片式新型空气涡轮机的数学模型和性能评价。本文定量分析了高压空气在涡轮机中不同喷射角时的膨胀作用和稳流功的影响。研究表明，除了膨胀功率的主要作用外，稳流功率在总功率输出中也有显著的贡献，并且随着喷射压力从2到6 bar变化，稳流功率在32.4%到1.5%之间变化。当喷射角等参数保持在30°以上，叶片角固定在45°或60°（即8 ~ 6个叶片）时，膨胀功变大，最终增加总功率输出。
Abstract In view of the fast depleting fossil fuel reserves, the major thrust has now been laid upon the search for alternative and cost-effective energy sources. Compressed air is utilized as a working fluid for producing shaft work. The air may be compressed by using a natural energy source such as wind, hydraulic, and/or solar energy; thus, the availability of compressed air and its utilization in an air turbine is completely pollution free. This article deals with the mathematical modelling and performance evaluation of a small capacity compressed-air-driven vaned-type novel air turbine. The effect of expansion action and steady flow work of high-pressure air for varying injection angles in a turbine have been quantified and analysed here. The study shows that apart from the major role of expansion power, the steady flow power also has significant contribution in the total power output and varies from 32.4 to 1.5 per cent as injection pressure varies from 2 to 6 bar. It is also concluded that when parameters such as the injection angle is kept above 30° and the vane angle is fixed at either 45° or 60° (which means 8 to 6 vanes), then the expansion work becomes large and ultimately increases the total power output.