Library filed under Noise
Jon Boone's response, published in The Caledonian Record in August 2005, to those who challenged the authenticity of his DVD "Life Under a Windplant".
BBC Research & Consulting's 2005 report for the National Wind Coordinating Committee that studies 9 wind plant sitings in an effort to identify circumstances that distinguish welcomed projects from projects that were not accepted by communities.
This paper recommends a number of 'best practices' for measuring noise created by industrial wind turbines.
I was asked to review the prefiled testimony and exhibits of Matthew Rubin for the East Haven Windfarm and to provide an independent opinion regarding the claimed environmental benefits, estimated benefit values, project footprint and noise impacts and general wind project economic issues.
...I want people to be well aware of the negative side of these giant windmills before allowing them to be built in your neighborhoods.
Department of Environmental Medicine, Goteborg University, P.O. Box 414, SE-405 30 Goteborg, Sweden (Received 14 November 2003; revised 1 September 2004; accepted 18 September 2004)
"It's a mechanical monstrosity. ... It's ugly. It makes noise, said Beverly Whitcomb. It makes a whopping sound which will just drive you nuts."
This important paper by Dr. H. G. Leventhall explains low frequency noise and its impact on people. The abstract and conclusions of the paper are posted below. The full report can be accessed at the below links.
Excessive low-frequency noise from open-cycle combustion turbine power plants has been recognized as a serious noise and vibration problem since the early 1970s. Yet, the problem still occurs, mainly because siting and specifying agencies are largely uninformed about the problem and because there are no standardized noise criteria in the U.S. to consult for guidance in avoiding low-frequency noise problems. Detailed sound pressure level measurements from five low-frequency problem sites are analyzed for support of a proposed criterion. The data are compared to noise and vibration thresholds. In addition, a small sampling of responses from residents to varied levels of low-frequency noise immissions is presented. This paper proposes a “C” weighted overall sound level criterion. The proposed criterion should be applicable to most industrial sources of steady low-frequency noise in addition to combustion turbines.
This review concentrates on the effects of low frequency noise (LFN) up to 100 Hz on selected physiological parameters, subjective complaints and performance. The abstract of the paper is provided below. The full paper can be accessed by clicking the links on this page.
The streamlined rules establish new procedures for demonstrating wind energy facility compliance with existing noise control standards. These standards are used by the Oregon Energy Facility Siting Council to evaluate the location of new energy facilities.
They introduced the world to "environmentally friendly" energy, but now some of Europe's "greenest" countries are under pressure to backtrack on wind farms as public anger grows over their impact on the countryside.
This is a letter written by Paula Stahl of St. George, West Virginia, about her experiences living in the neighborhood of the 66 MW Mountaineer Wind Energy Center. Formerly known as the Backbone Mountain Wind Farm, the 4,400-acre site has 44 turbines, 1.5 MW each, stretched along miles of ridgeline in Tucker and Preston counties. Ms. Stahl submitted the letter to the Berkshire Eagle and North Adams Transcript, neither of which has printed it.
These levels (noise) are much higher than predicted by the company.
The attached Pdf file provides a comprehensive overview of wind turbine noise related issues.
"Wind turbines generate noise from multiple mechanical and aerodynamic sources. As the technology has advanced, wind turbines have gotten much quieter, but noise from wind turbines is still a public concern. The problems associated with wind turbine noise have been one of the more studied environmental impact areas in wind energy engineering. Noise levels can be measured, but, similar to other environmental concerns, the public's perception of the noise impact of wind turbines is in part a subjective determination. Noise is defined as any unwanted sound. Concerns about noise depend on 1) the level of intensity, frequency, frequency distribution and patterns of the noise source; 2) background noise levels; 3) the terrain between the emitter and receptor; and 4) the nature of the noise receptor. The effects of noise on people can be classified into three general categories (National Wind Coordinating Committee, 1998): 1) Subjective effects including annoyance, nuisance, dissatisfaction 2) Interference with activities such as speech, sleep, and learning 3) Physiological effects such as anxiety, tinnitus, or hearing loss"........ prepared by the Renewable Energy Research Laboratory Center for Energy Efficiency and Renewable Energy Department of Mechanical and Industrial Engineering University of Massachusetts at Amherst
In order to study the physiological and psychological effects of infrasound on person, we have measured the changes of blood pressure and heart rate and also investigated subjective feelings of subjects exposed to infrasound.
"Onshore wind farms are a health hazard to people living near them because of the low- frequency noise that they emit, according to new medical studies. Doctors say that the turbines - some of which are taller than Big Ben - can cause headaches and depression among residents living up to a mile away."
Low Frequency Noise Low frequency noise is generated at very low frequencies, generally accepted to be at levels below 100 Hz and the audible range. There is presently no commonly accepted metric or standard for measurement, although several have been proposed or used in specific situations. Low frequency noise has been associated with wind turbine developments, as well as road, rail, sea and air traffic and other industrial applications such as cooling towers. It creates a large potential for community annoyance, and it is most often experienced inside of homes and buildings where resonance amplifies the sound, which is less easily heard outside. Because the frequencies are so low, the noise is often “felt” as a vibration or a pressure sensation. Reported effects include annoyance, stress, fatigue, nausea and disturbed sleep. Low frequency noise can be a factor at much greater distances from the noise source than audible noise. A case study in North Carolina in the 1980’s near a wind turbine installation documented low frequency noise problems at residences located over ½ mile from the turbine.2 While the phenomenon was originally believed to be associated with the older, down-wind designed turbines, the problem persists with newer wind farms. It has received particular attention in Denmark, and has been a topic considered in the UK, Scotland and Wales through a commissioned government project in 2001.
Plymouth GP Dr Amanda Harry has conducted her own survey on the effect of noise on people living near the Bears Down wind farm in Cornwall. Here, she reveals her findings.