Showing 1 - 9 of 9
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 …
Persistent link: https://www.econbiz.de/10010805951
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 …
Persistent link: https://www.econbiz.de/10010806081
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 …
Persistent link: https://www.econbiz.de/10010804621
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 …
Persistent link: https://www.econbiz.de/10010805193
speed constraint, for example to limit noise emissions. The main contribution of the paper is the formulation of a policy …
Persistent link: https://www.econbiz.de/10011044264
The effect of blade flutter and electrical loading on the sound level of two different size wind turbines was investigated at the Conservation and Production Research Laboratory near Bushland, TX. Data were collected on two blade designs tested on a wind turbine rated at 1 kW, and there also...
Persistent link: https://www.econbiz.de/10011044393
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 …
Persistent link: https://www.econbiz.de/10011045559
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 …
Persistent link: https://www.econbiz.de/10011045884
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 …
Persistent link: https://www.econbiz.de/10011046308