In this research work, the acoustic characteristics of noise produced by TG950 generator is studied and a suitable physical full scale model acoustic enclosure for it has been designed and evaluated, and is hereby presented. The generator was treated as a point source and the insertion loss of the produced model of full enclosure was found to be quite good. The results show that the noise level was reduced by about 17 % at the optimum stack height of 1600 mm. The effect of exhaust tunneling was investigated. Results showed that exhaust tunnel projection beyond 200mm did not significantly improve the enclosure insertion loss. The enclosure model and the generator were discovered to have good thermal conditions under natural convection, with a maximum temperature rise of 9oC from ambient temperature of 30 oC, thereby eliminating the need for artificial cooling and its consequent ancillary power consumption.
A Natural Convective Passive Noise Control System for Mini-Generators
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