Effect of Impeller Solidity on the Generating Performance for Solar Power Generation  

作　　者：Jia Liu Rui Tian Jing Nie 

机构地区：[1]with the College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051 [2]with the College of Aeronautics,Inner Mongolia University of Technology,Hohhot 010051

出　　处：《Journal of Electronic Science and Technology》2021年第4期308-318,共11页电子科技学刊（英文版）

基　　金：the Scientific Research Project of Inner Mongolia University under Grant No.NJZY19075.

摘　　要：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.

关 键 词：Blade number impeller solidity solar chimney power generation 

分 类 号：TM615[电气工程—电力系统及自动化]