BYU

Abstract by Zachary Jones

Personal Infomation


Presenter's Name

Zachary Jones

Co-Presenters

None

Degree Level

Undergraduate

Co-Authors

Michael Rose

Abstract Infomation


Department

Physics and Astronomy

Faculty Advisor

Kent Gee, Scott Sommerfeldt

Title

Noise-Reduction in Vacuum-Assisted Toilets

Abstract

The noise from airplane vacuum-assisted toilets is often viewed as objectionable by passengers. Our research presents a way to reduce vacuum-assisted toilet volume levels. Our experimental setup consists of an airplane toilet connected to two large holding tanks evacuated by an industrial vacuum pump. It has been found that manipulating  the tube geometry attached to the bowl can lead to significant noise reductions. When properly configured, an increasing bend radius and tube length between the bowl and flush valve has lead to a decrease of up to 20 decibels in the overall noise level. One constraint on the optimal solution that has also been investigated is that the prototype model needs to fit underneath the toilet envelope.