Effect of impeller solidity on the generating performance for solar power generation

Jia Liu , Rui Tian , Jing Nie
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引用次数: 1

Abstract

According to current solar power research, both the generating unit's minimum start-up speed and power generation system's minimum flow rate for operation decrease with the increase in the impeller solidity. Ideally, a high solidity should be achieved, as this translates more power for a solar power system in the start-up and shut-down cycles. However, increasing the number of blades does not increase the impeller solidity; therefore, there is an optimal number of blades needed to achieve the preferred solidity. This paper begins by selecting the blade airfoil and then performs a theoretical analysis based on the relationship between the blade number and chord length. Experiments are conducted to measure the starting and stopping wind speeds and power characteristics for different numbers of blades. The results show that a maximum impeller solidity of 0.2862 is achieved, as well as the minimum flow speed at the start-up, and the maintenance of the solar chimney power generation system is optimized when there are four blades.

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太阳能发电叶轮坚固性对发电性能的影响
根据目前的太阳能发电研究,随着叶轮固体度的增加,发电机组的最小启动速度和发电系统的最小运行流量都在减小。理想情况下,应达到高硬度,因为这可以在启动和关闭周期中为太阳能发电系统提供更多的能量。然而,增加叶片数量并不能增加叶轮的固体度;因此,有一个最佳数量的叶片需要实现首选的固体。本文从叶片翼型的选择入手,对叶片数与弦长的关系进行了理论分析。实验测量了不同叶片数下的起、停风速和功率特性。结果表明:叶轮固度达到最大0.2862,启动时流速达到最小,4片叶片时太阳能烟囱发电系统的维护得到优化。
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来源期刊
Journal of Electronic Science and Technology
Journal of Electronic Science and Technology Engineering-Electrical and Electronic Engineering
CiteScore
4.30
自引率
0.00%
发文量
1362
审稿时长
99 days
期刊介绍: JEST (International) covers the state-of-the-art achievements in electronic science and technology, including the most highlight areas: ¨ Communication Technology ¨ Computer Science and Information Technology ¨ Information and Network Security ¨ Bioelectronics and Biomedicine ¨ Neural Networks and Intelligent Systems ¨ Electronic Systems and Array Processing ¨ Optoelectronic and Photonic Technologies ¨ Electronic Materials and Devices ¨ Sensing and Measurement ¨ Signal Processing and Image Processing JEST (International) is dedicated to building an open, high-level academic journal supported by researchers, professionals, and academicians. The Journal has been fully indexed by Ei INSPEC and has published, with great honor, the contributions from more than 20 countries and regions in the world.
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