number of issues such as low wind speeds, high turbulence and noise issues. This paper presents the results of an … investigation carried out to assess the effect of turbulence on the noise emissions from a micro-scale horizontal axis wind turbine … (HAWT). Two experiments were devised in order to investigate the noise emissions from a Micro Wind Turbine (MWT) mounted on …

Noise concerns frequently pose a barrier to widespread implementation of wind turbines and while the perception of … noise from large turbines has been investigated, there is a relative gap in the research for small and micro wind turbines …. This paper presents findings from interdisciplinary research linking noise measurements from small wind installations with …

a measure of combustion noise. Experimental investigation on diesel and dual fuel engines revealed the noise generated … quantity on combustion noise is examined for both diesel and dual engine. Maximum pressure rise rate and some samples of … ensemble averaged pressure–crank angle data are presented in the present work. The combustion noise, generally, is found to …

ventilation. The aim of this study is to investigate the relationships between environmental noise levels, especially in hospitals … Greater London are. Calculated noise maps are used through a series of data processing, and 28 social and economic factors are … average. It is shown that the environmental noise levels of NHS hospitals in Greater London have close relationships with a …

speed constraint, for example to limit noise emissions. The main contribution of the paper is the formulation of a policy …

This study was undertaken to obtain the knowledge necessary for reducing noise of mixed oil composed of rapeseed oil …), exhaust-valve-opening angle (β), fuel delivery angle (θ) and injection pressure (P, in 104Pa) on noise when an oil mixture of … method were adopted in the experiments to find the relationship between noise and four adjustable working parameters …

This paper presents observations of audio noise in frequency range 20–20 000 Hz from wind turbines. The observations … were performed around the theoretically calculated 40 dBA noise perimeter around the wind turbine farm at Oxhult, Sweden … total noise level of sound from wind turbines. The system has been calibrated at SP Borås. It is shown that it has a flat …

the UK there are only 500 consented hydro schemes. Planning applications for such schemes require a noise assessment …. Noise evaluation of a proposed renewable scheme is often complicated by the turbine sites having distinct noise …