Hongisto Valtteri, Oliva David, Keränen Jukka
Indoor Environment Research Group, Turku University of Applied Sciences, 14-18 B Lemminkäisenkatu, 20520 Turku, Finland.
J Acoust Soc Am. 2017 Oct;142(4):2185. doi: 10.1121/1.5006903.
The existing exposure-response relationships describing the association between wind turbine sound level and noise annoyance concern turbine sizes of 0.15-3.0 MW. The main purpose of this study was to determine a relationship concerning turbines with nominal power of 3-5 MW. A cross-sectional survey was conducted around three wind power areas in Finland. The survey involved all households within a 2 km distance from the nearest turbine. Altogether, 429 households out of 753 participated. The households were exposed to wind turbine noise having sound levels within 26.7-44.2 dB L. Standard prediction methods were applied to determine the sound level, L, in each participant's yard. The measured sound level agreed well with the predicted sound level. The exposure-response relationship was derived between L outdoors and the indoor noise annoyance. The relationship was in rather good agreement with two previous studies involving much smaller turbines (0.15-1.5 MW) under 40 dB L. The Community Tolerance Level (CTL), CTL = 50 dB, was 3 dB lower than for two previous studies. Above 40 dB, a small number of participants prevented a reliable comparison to previous studies.
现有的描述风力涡轮机声级与噪声烦恼之间关联的暴露-反应关系涉及0.15-3.0兆瓦的涡轮机尺寸。本研究的主要目的是确定关于额定功率为3-5兆瓦的涡轮机的一种关系。在芬兰的三个风力发电区域周围进行了一项横断面调查。该调查涵盖了距离最近涡轮机2公里范围内的所有家庭。753户家庭中共有429户参与。这些家庭暴露于声级在26.7-44.2分贝声级（L）范围内的风力涡轮机噪声中。应用标准预测方法来确定每个参与者院子里的声级L。测量的声级与预测的声级吻合良好。得出了户外声级L与室内噪声烦恼之间的暴露-反应关系。该关系与之前两项涉及声级低于40分贝声级（L）的小得多的涡轮机（0.15-1.5兆瓦）的研究相当吻合。社区耐受水平（CTL），CTL = 50分贝，比之前两项研究低3分贝。在40分贝以上，少数参与者妨碍了与之前研究进行可靠的比较。
