An Experimental Investigation of Enclosure’s Effect on Noise Reduction in Portable Generators (Technical Note)

Document Type : Original Article

Authors

Mechanical department, College of Engineering, Wasit University, Iraq

Abstract

The portable generators are the main means of compensating the shortage of national electricity power as in Iraq. However, their noise causes a huge disturbance, uncomforting and loss of concentration of the nearby resident. This problem requires a solution because most shops and residential houses use generators. Covering method is a simple and relatively low cost one for reduction of generators noise.  In the present study, an experimental investigation is conducted for evaluating the effect of using an enclosure on noise reduction of portable generators. The enclosure is made from some available and traditional materials such as foam and plywood. The sound transmission loss due to the use of enclosure is estimated for a wide range of frequency spectrum and the results showed that used enclosure helps in reduction of noise effectively. Furthermore, it was found that the generator temperature was not affected much by the use of the present enclosure. The present study is intended to be a step stone for a development of a low cost and effective commercial enclosure of portable generator.

Keywords


 
1. Khalvati, F. and Omidvar, A., "Prediction of noise transmission
loss and acoustic comfort assessment of a ventilated window
using statistical energy analysis", International Journal of
Engineering, Transactions C: Aspects,  Vol. 32, No. 3, (2019), 451-459. 
2. Onawumi, A.S., Okoli, S., Mfon, U. and Raheem, W., "Noise
level investigation and control of household electric power
generator", Covenant Journal of Engineering Technology, 
Vol. 2, No. 1, (2018). https://journals.covenantuniversity.
edu.ng/index.php/cjet/article/view/898 
3. Kuku, R., Raji, N. and Bello, T., "Development and performance 
evaluation of sound proof enclosure for portable generators",
Research Journal of Applied Sciences, Engineering and
Technology, Vol. 4, (2012), 2600-2603. 
4. Pandey, K., Deb, K. and Kumar, U., "Experimental studies on
effect of noise level control for 7.5 kva diesel generator set with
an enclosure", Journal of Environmental Research and
Development,  Vol. 4, No. 2, (2009), 506-516. 
5. Patil, S. R., S. S. Shinde, S. V. Chaitanya, Varish Chaturvedi, G.
Raghavendra, and I. Manimozhi. "Noise reduction of an IC
engine by enclosure method with 25 mm thick glass wool as
noise absorbing medium.", International Journal of
Engineering Technology, Management and Applied Sciences, Vol. 1, No. 2 (2014), 1-8. 
6. Hammad, U., Aizaz, A., Khan, A.A. and Qurehi, T., "Design
and development of noise suppression system for domestic  generators", European Scientific Journal,  Vol. 9, No. 10,
(2014), 526-533. 
7. Hassan-Beygi, S.R. and Ghobadian, B., "Noise reduction of a
portable gas generator set using an acoustic enclosure",
Agricultural Engineering International: CIGR Journal,  Vol.
18, No. 3, (2016), 159-170. 
8. Akhaze, M.N. and John, E., "Development of a soundproof
device for 950 watt rated portable generators", Journal of
Applied Sciences and Environmental Management,  Vol. 20,
No. 1, (2016), 83-86.