Noise control technology for generator sets in enclosures

Zhang, Nailong; Yang, Wenming; Ren-yuan, Fei

doi:10.1007/s11465-008-0051-0

Cited by 5 publications

(6 citation statements)

References 13 publications

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“…The results of the outdoor and indoor noise levels associated with the use of generators obtained showed anthropogenic implications of its use above limits set by statutory bodies. The findings of Rao et al (1988);Nailong et al (2008); Fuller et al (2012); Paravathi and Gopalakrishnan (2003) also showed that the use of generator set produced noise levels above permissible limits approved and it exposed the personnel to potential hazards. Also, Nailong et al (2008); Nwaogozie and Owate (200); in their studies found that people can be exposed to noise from different activities that will cause pollution/environmental hazards and medical effects.…”

Section: Comparison Of Noise Levels In Buildings Sampled With the Stamentioning

confidence: 95%

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Characterization And Effects Of Noise Levels Of Generators Used In Buildings In Ibadan Metropolis, Nigeria

Wahab

2018

Journal of Sustainable Architecture and Civil Engineering

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The proliferation of generators used in urban settlements in Nigeria over the years has been a major source of concern to the health and comfort of building occupants. This study, therefore, assessed the impact of outdoor and indoor noise levels associated with the use of generators on the environment and building occupants. The study area, Ibadan Metropolis, was divided into core, transition and suburban zones. Five (5) residential buildings were purposively selected in each of the core, transition and suburban zones of the study area. Measurement of noise levels was taken with the use of a digital sound level meter with compliance to NESREA and OSHA standards. The outdoor noise levels before and during use of generators were taken at 0, 2 and 4m from external walls of the buildings sampled while the corresponding indoor noise levels were taken at the actively useable internal space; at a least distance of 1m from internal walls, 1.2-1.5m above floor level and 1.5m from windows. Descriptive and inferential statistics were used to analyse the data collected. The findings of the study revealed that the mean indoor noise levels of 79.97 dB, 87.4 dB during use of generators in residential buildings were highest in the core zone and above the permissible limits. The study concluded that there should be adoption of best housekeeping practices by positioning generators in properly built enclosure features; and efforts made to enforce sales and procurement of generators with noise abatement mechanisms that can conform to ISO 3744 and local codes so as to mitigate impact of its high noise levels on the health and comfort of building occupants.

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Section: Comparison Of Noise Levels In Buildings Sampled With the Stamentioning

confidence: 95%

“…Developed land increased from only 100 ha in 1830 to 12. (Mabogunje, 1968). It is therefore capable of reflecting practices and attributes of the region.…”

Section: Introductionmentioning

confidence: 99%

Characterization And Effects Of Noise Levels Of Generators Used In Buildings In Ibadan Metropolis, Nigeria

Wahab

2018

Journal of Sustainable Architecture and Civil Engineering

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“…Also, a direct relationship is between industrial noise and the percentage of affected workers, disturbed by noise. Increasing the noise level in the industrial environment also leads to an increase in the number of accidents among workers [4,5,15,16].…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, high level of noise are considered the most common cause of discomfort and permanent loss of hearing. This is a common and serious problem of the modern industrial world, which can cause hight costs and serious health problems [4,5,15]. Many countries have instituted laws that limit noise exposure of workers in industry [4][5][6]8].…”

Section: Introductionmentioning

confidence: 99%

Measuring Noise Level in the Textile Industry

Tomozei¹,

PIPA²,

Irimia³

et al. 2018

JESR

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The Company SС Sonomа Trаding currently owns a production area, the activity being carried out on a placement has a built area of 275 m2. The monitoring of the noise level within the company Sonoma Trading SRL was carried out for three weeks, between 18.05.2015 - 5.06.2015; for the noisiest equipments. Result of noise level was in the range 82.41 dB – 63.73 dB. The background noise was 38.59 dB. Based on the results of the measurements made, the noise map for both tailoring rooms was prepared: the tailor room and the ironing - stapled - packing section. According to the obtained results, the noise level values within the company Sonoma Trading SRL do not exceed the maximum allowed imposed by the legislation in force.

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“…Wang et al [11] investigates the definition, classification of decoupling motion, together with the necessary condition and several sufficient conditions for mechanism to realize this kind of motion by the use of screw theory. Zhang et al [12] introduced a spherical 3-DoF parallel mechanism, and deduced the necessary and sufficient condition to synthesis full-isotropic parallel mechanism based on the physical meaning of the cow vector of Jacobian matrix.…”

Section: Introductionmentioning

confidence: 99%

The Nonexistence of Three Degrees of Freedom Rotational Fully Decoupled Parallel Mechanism

Hou

Zeng

Duan

et al. 2013

AMM

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The existence of coupling makes the parallel mechanism possess some special advantages over the serial mechanism, while it is just the coupling that brings about the parallel mechanism some difficulties in kinematics and dynamic analysis, the development of control system, and the trajectory planning. Therefore the research on the decoupled parallel mechanism becomes one of the hot of the mechanism fields. While whether the parallel mechanism can realize decouple is the premise for synthesis and analysis of the parallel mechanism. Based on screw theory, the existence of the three degrees of freedom (3-DoF) rotational fully-decoupled parallel mechanism is distinguished. Then taking the 6-PUS/UPU parallel mechanism as example, the rotation angles of the moving platform are measured, which is verified the impossibility of the 3-DoF rotation decoupling. The contents of this paper should possess theoretical significance for the innovative configuration synthesis and structure design of rotational decoupled parallel mechanism.

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Noise control technology for generator sets in enclosures

Cited by 5 publications

References 13 publications

Characterization And Effects Of Noise Levels Of Generators Used In Buildings In Ibadan Metropolis, Nigeria

Characterization And Effects Of Noise Levels Of Generators Used In Buildings In Ibadan Metropolis, Nigeria

Measuring Noise Level in the Textile Industry

The Nonexistence of Three Degrees of Freedom Rotational Fully Decoupled Parallel Mechanism

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