Acoustic noise emission of air turbines for wave energy conversion: Assessment and analysis

被引：3
|
作者：
Henriques, J. C. C. [1 ]
Gato, L. M. C. [1 ]
La Sala, V. [2 ]
Carrelhas, A. A. D. [1 ]
机构：
[1] Univ Lisbon, IDMEC, Inst Super Tecn, Ave Rovisco Pais, P-1049001 Lisbon, Portugal
[2] Politecn Torino, Corso Duca Abruzzi 24, I-10129 Turin, Italy
来源：
RENEWABLE ENERGY | 2023年 / 212卷
基金：
欧盟地平线“2020”;
关键词：
Wave energy; Air turbines; Noise emission; Biradial turbine; Wells turbine;
D O I：
10.1016/j.renene.2023.05.078
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The oscillating-water-column (OWC) system is one of the most developed wave energy conversion technologies, and several prototypes have been deployed and tested on the sea. Noise emission is essential to this technology's long-term environmental impact assessment. The power take-off system of an OWC comprises a self-rectifying air turbine that directly drives an electrical generator. The paper compares the noise emission of a biradial turbine with that of a Wells turbine. The noise emission of the biradial turbine was measured at the Instituto Superior Tecnico variable-flow test rig, while the Wells turbine data were collected in the literature. Acoustic measurement procedures followed the guidelines of the ISO 3746 Standard. A definition of specific noise level is used to compare the noise emission from geometrically similar air turbines or other air turbines performing the same duty. The results show that the noise levels of the biradial turbine are significantly lower than those of the Wells turbine at off-design conditions for the same pneumatic power.
引用
收藏
页码：897 / 907
页数：11
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