Abstract Previous research has demonstrated the potential of pico-hydro turbines to provide reliable electricity in applications such as rural electrification. However, the literature has primarily focused on the development of turbine systems for design environments where spatial and flow rate constraints tend to be non-restrictive. The work detailed in this paper presents the development of a novel, compact, high efficiency turbine capable of powering a compact electrochemical cell for off-grid water disinfection. The turbine with the generator is capable of generating nearly 100 W of power with a footprint of only 8″ in length and 4″ in diameter. A basic mathematical model of a DC generator is coupled to a computational fluid dynamics (CFD) turbine model to evaluate different system configurations. Following a Taguchi Method study to computationally explore the turbine design space, experimental testing of improved turbine configurations is shown to provide electrical power output improvements of 20%. Selection of a more compatible DC generator also provides electrical power output and efficiency improvements of a factor of 2 and 2.5 respectively.

中文翻译：

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自供电电化学水消毒装置的微型水轮机发电机系统设计

摘要 先前的研究已经证明了微型水轮机在农村电气化等应用中提供可靠电力的潜力。然而，文献主要集中在空间和流速约束往往是非限制性的设计环境中的涡轮系统的开发。本文详细介绍了一种新型、紧凑、高效涡轮机的开发，该涡轮机能够为紧凑型电化学电池供电，用于离网水消毒。带有发电机的涡轮机能够产生近 100 W 的功率，占地面积仅为 8 英寸长和 4 英寸直径。直流发电机的基本数学模型与计算流体动力学 (CFD) 涡轮模型耦合，以评估不同的系统配置。根据田口方法研究以计算方式探索涡轮机设计空间，改进涡轮机配置的实验测试显示可提供 20% 的电力输出改进。选择更兼容的直流发电机还可以分别提供 2 倍和 2.5 倍的电力输出和效率改进。