Forouharmajd F, Maghsoudian L, Barakat S. An Investigation of the Role of Pad Isolator in Transmitted Vibration Reduction in the Body of the Duct and Fan Base of Ventilation Systems. J Health Syst Res 2016; 11 (4) :694-698
URL:
http://hsr.mui.ac.ir/article-1-823-en.html
1- Assistant Professor, Department of Occupational Health Engineering, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran
2- Department of Occupational Health Engineering, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran
Abstract: (1246 Views)
Background: The application of ventilation systems in industries and workplaces is with the aim of improving environmental conditions for employees. The lack of appropriate design and control methods for ventilation system components result in the production of sound and vibration in the system. The purpose of this study was to determine the role of a pad isolator in controlling vibration and reducing noise in the ventilation systems.Methods: This analytical study was performed on the heating, ventilation and air-conditioning (HVAC) system that had a galvanized duct and axial fan. Vibration measurements were carried out on the body of the channel and the fan base before and after installation of the rubber isolator and reduction in the amounts of transmitted vibrations was assessed.Findings: A 61% reduction in the fan vibration velocity at 2580 rpm was observed and the maximum effect of the vibration isolator was observed in 2580 rpm. Moreover, the isolator had a much greater effect on reducing the rate of vibration at high speeds. At a speed of 2200 rpm and below, vibration velocity was decreased noticeably.Conclusion: Our study indicates that the performance of a rubber isolator in vibration reduction is efficient in small machines such as fans in air conditioning systems. Based on the load, static deflection, and compression level of the materials used, isolators can be used as an effective means of reducing vibration.
Type of Study:
Research |
Subject:
education health and promotion Received: 2020/07/16 | Accepted: 2016/01/15 | Published: 2016/01/15