The heating, ventilation and air conditioning (HVAC) systems can be the notorious contributors to nuisance noise in buildings. The HVAC systems and their components must be designed, installed and operated in such a way that any noise they may cause inside the building or neighboring buildings are at levels that do not cause any serious discomfort to the occupants. Noise control is not an exact science; however there are numerous ways the noise can be reduced from a particular source. The most desirable way to control excessive noise levels is by using engineering controls such as application of absorption materials, isolation techniques, installing barriers or acoustic dampening materials, and using special equipments. Investing time in the design stage and a few extra dollars during construction of HVAC system can pay off handsomely in improved performance. This 6-hour online course provides a basic understanding of noise control fundamentals and summarizes few noise control tips for HVAC system design. This course is aimed at students, mechanical and HVAC engineers, architects, building designers, interior designers, contractors, civil estimators, facility managers and general audience.

Learning Objectives

• Describe the key terminology used in building acoustics;
• Differentiate between dB and dB (A);
• Differentiate between sound power and sound pressure;
• Ascertain the net sound effect from various sources;
• Describe the A-weighing, NC and NR ratings;
• Evaluate the techniques used in noise control situations;
• Understand the concept of reverberation, absorption coefficient & sound transmission loss;
• Describe the noise reduction coefficient (NRC) and sound transmission loss (STL);
• Identify the noise points in the HVAC systems;
• Apply the acoustic features to HVAC design & specifications;
• Understand Do’s and Don’ts of equipment selection and installation.