-noise pollution assessment and control for construction diesel generators in hamadan, iran
نویسندگان
چکیده
background and aims: since using city power for welding process is not allowed, diesel generators are used as a power supply in construction industries. they could be introduced as a main source of noise pollution. the purposes of this study were to assess and control noise pollution produced by construction diesel generators in hamadan, iran. methods: in this descriptive, cross-sectional study, sound pressure level (spl) was measured in 4 points at a distance of 1 meter from a diesel generator. frequency analysis was also conducted for stations with spls higher than the standard limit. the noise disturbance questionnaire was then used to investigate noise disturbance among neighbors. appropriate mufflers were designed to reduce spl based on the objectives of the study. finally, data was analyzed by spss 13 . findings: our results showed that the mean values of spl around the generators and on the nearby streets were 97.0 ± 2.2 and 74.0 ± 7.4 db(a), respectively. these values both exceeded the recommended levels. overall, 60.7% of the neighbors were disturbed by the noise from construction activities. using the designed muffler in the benz model, spl reduction at 63 hz was 24.4 db and total reduction was 11 db. the corresponding values were 21.2 and 9.5 db in the romania model. conclusion: exhaust system was a main source of noise in diesel generators. therefore, appropriate mufflers would reduce noise pollution.
منابع مشابه
بررسی آلودگی صوتی مولد های دیزلی در فعالیت های ساختمان سازی دریکی از مناطق تهران
Introduction: Using diesel generators is necessary for activities like welding in construction sites and it is often accompanied with noise pollution. The aim of this study was to evaluate noise pollution induced by diesel generators in construction activities in one of the districts of Tehran city. Material and Method: In this descriptive study, 14 construction sites were selected for th...
متن کاملAssessment of Noise Pollution and Its Effect on Residents Health in Ahvaz, Iran in 2011
Background & Aims of the Study: Among the environmental pollutions, noise pollution, due to the potential physiological and psychological effects on humans, is of a particular importance. Exposure to noise can result in hearing loss in citizens. Health risks from noise associated with road traffic. Noise health effects are the health consequences of elevated sound levels. This ...
متن کاملAssessment and Control of Noise Pollution in Seal Gas Compressor of Reduction Unit 2 of a Steel Industry
Background and aims: Undoubtedly, noise and vibration are major problems of industrial world and lot of people are very exposed to these phenomena in their workplace or residential areas. Researchers have shown that exposure to noise may increase the risks related to personal health, like nervous frailty, extreme irritability, muscle cramps, stress and anxiety, dizziness, headache and migraine,...
متن کاملdevelopment and implementation of an optimized control strategy for induction machine in an electric vehicle
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
15 صفحه اولa framework for identifying and prioritizing factors affecting customers’ online shopping behavior in iran
the purpose of this study is identifying effective factors which make customers shop online in iran and investigating the importance of discovered factors in online customers’ decision. in the identifying phase, to discover the factors affecting online shopping behavior of customers in iran, the derived reference model summarizing antecedents of online shopping proposed by change et al. was us...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
تحقیقات نظام سلامتجلد ۷، شماره ۶، صفحات ۰-۰
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023