Designing and Manufacturing a Noise Controlling Silencer for the Cooling Tower Pump of Sarcheshmeh Copper Power Station
Journal Title: UNKNOWN - Year 2017, Vol 9, Issue 4
Abstract
Background: One of the most common harmful factors in the workplace is noise. Noise control is a factor beneficial for health and safety in the workplace. Objectives: The current study aimed to design and manufacture a silencer for the cooling tower pump of Sarcheshmeh Copper power station in order to control noise. Methods: In this study, sound pressure level was measured by the use of a sound level meter (B & K 2260). Measurement was carried out in the light of ISO 1996 standard. After studying technical and acoustic features of the noise source, a dispersive-absorptive silencer was designed to control noise pollution generated by the cooling tower pump of the thermal station. After analyzing the frequencies of sound pressure level and using available data, a cylindrical silencer (with a diameter of 1.5 m and height of 3 m) was designed and manufactured. The internal part of the silencer was filled with different columns of absorbent material covered with punched metal. Therefore, the silencer consisted of (1) acoustic diffuser, (2) acoustic chamber, and (3) acoustic channels. Results: Measurements showed that, at a distance of 1 m from the source, sound pressure level reduced from 127 dBA before installing the silencer to 79 dBA after the installation, resulting in a reduction of 48 dBA. Conclusions: Using a silencer with absorbent material (glass wool) is very effective in reducing the noise generated by the pump.
Authors and Affiliations
Sajad Zare, Yaser Sahranavard, Hossein Ali Hakimi, Davoud Hassanvand, Masoumeh Karami, Mohammad Nabi Farokhi
Keywords
Related Articles
- EP ID EP291541
- DOI 10.5812/jjhs.59540
- Views 75
- Downloads 0
Occupational Exposure of Train Drivers to Static and Extremely Low Frequency Magnetic Fields in Tehran Subway
Background: Electrification of transport systems currently deserves top priority in Iran. Such systems generate a magnetic field in static or extremely low frequency ranges. Therefore, train drivers may be exposed to the...
The Effect of Safety Costs on Productivity and Quality: A Case Study of Five Steel Companies in Ahvaz
Background: The implementation of a safety program is one of the most effective factors in increasing productivity. A look to safety from the perspective of efficiency can indicate necessary investment in safety for all,...
Efficiency of the Photo Fenton Process for Decolorization of Direct Red 81 Dye From the Aqueous Solution
Background: Textile dyes are the largest organic compounds associated with some problems for the environment. Advanced oxidation process is the most effective method for dye removal from wastewater. Objectives: The aim...
Association Between HLA-A*02 Genotype and Multiple Sclerosis in Khuzestan Province, Iran
Background: Multiple sclerosis (MS) is a chronic, inflammatory, demyelinating, and neurodegenerative autoimmune disease of the central nervous system (CNS). In the disease, the immune system attacks myelin sheath around...
Diabetes Education, Knowledge Improvement, Attitudes and Self-Care Activities Among Patients With Type 2 Diabetes in Bangladesh
Background: Diabetes education provided by physicians in Bangladesh has some limitations, and its impacts on self-management are unclear. These prompted the Diabetic Association of Bangladesh (BADAS) to train 100 diabete...