Plumbing noises in water supply and sewage systems

Abstract

The main subject of the thesis is to analyze and find solution for plumbing noise problems in water systems in a dwelling. Acoustical parameter inside the residential areas is one of the most significant factors when designing comfort environment for living. Noises that are caused by water supply and sewage systems are one of the common reasons of occupant complaints. That is why it is important for a HVAC engineer to be able to design acoustical appropriate systems and, in case of any violations that result higher noise level, identify a problem and suggest a noise reduction solution.

Analysis of noise problems requires knowledge in sound properties field and in water system field. Due to that in this thesis sound theory and water systems will be considered. For practical example three storey building will be analyzed where occupants complain about plumbing noises. After studying the noise problem and considering residential circumstances the best solution for the dwelling will be suggested.

All the main noise sources, factors that can influence sound level, and ways to reduce noise in water systems will be described. This thesis can be used as a theoretical background for future investigations about noises in water systems and as an example of plumbing noises analyzes.