Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-19328
Publication type: Conference paper
Type of review: Peer review (publication)
Title: Advanced design and optimization of wind turbines based on turbine theories
Authors: Zhang, Zhengji
et. al: No
DOI: 10.21256/zhaw-19328
Conference details: 3rd International Conference on Power and Energy Engineering (ICPEE 2019), Quingdao, China, October 25-27, 2019
Issue Date: 26-Oct-2019
Publisher / Ed. Institution: ZHAW Zürcher Hochschule für Angewandte Wissenschaften
Language: English
Subjects: Wind power; Turbine theory
Subject (DDC): 621.04: Energy engineering
Abstract: A review of wind turbine technology showed that many flaws in both the flow models and computations are involved in the traditional fundamentals. While traditional methods for design and computation are all based on the airfoil theory, a new method based on turbine theories has been developed and is shown to be ideally applicable. Against the traditional method, the new method also considers non-uniform pressure distribution in flows downstream of the rotor plane and is thus highly accurate. The blade efficiency or tip swirl number has been introduced. It enables computation of the power coefficient to be very reasonable. Its optimum can be directly applied to the geometrical design of turbine blades. Between the tip speed ratio blade efficiency and power coefficient cp, a closed solution of both the optimum design and the operation of wind turbines exists. It is demonstrated that the maximum achievable power coefficient can be 10% larger than that predicted by all previous theories.
URI: https://digitalcollection.zhaw.ch/handle/11475/19328
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Institute of Energy Systems and Fluid Engineering (IEFE)
Appears in collections:Publikationen School of Engineering

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