Studies on the Heater Noise of the Vinyl Greenhouse (II)

Reduction of Noise

Abstract

The noise caused by hot air heater in the vinyl greenhouse is a matter of increasing concern. To reduce the noise from the heater, a sound proof wall was designed. It consisted of the perforated wooden plate, air layer and sound absorption materials (urethane foam and chaffs).
As a result, the noise could be reduced about 7-9dB(A) in greenhouse, and the noise around the greenhouse became under 50dB(A) at the distance of 15-20m from the greenhouse.
It also became clear that the chaffs could be use as effective sound absorption materials.