The Science of ComfortTM
Back in 2022, a mixed-use building in the Downtown East Village neighborhood of Calgary, AB, managed by the Calgary Housing Corporation, was identified as violating the city’s noise bylaws due to excessive noise emitted by its air-conditioning condensers. To address the issue, the city had initially planned to purchase and relocate new low-noise variable refrigerant flow (VRF) condensers.
Topics: Acoustics, Noise Control, Acoustic Louvers, Acoustic Panels, Engineering, Design Engineering
Public schools play an important role in the communities they serve. More than just a place for students to learn, schools offer valuable extracurricular programs for young people and their families. They help foster a connection between the students and the world around them, and the best schools continually rise to the needs of their neighbors. That was the case in Minneapolis, MN, when Ella Baker Global Studies and Humanities Magnet School (formerly Jefferson Middle School) realized its HVAC system was causing too much noise.
Topics: Acoustics, Noise Control, Noise Solution, HVAC, Engineering, Design Engineering
For years, studies have linked healthy environments in schools with improved educational outcomes for students. We’ve seen that indoor air quality has a major impact on health, performance and attendance and that quiet classrooms improve academic performance, reduce stress and encourage better behavior.
Topics: Acoustics, Displacement, Thermal Comfort, HVAC Fundamentals, HVAC, Engineering, Design Engineering, ASHRAE 62
Sound-power and sound-pressure levels are used to catalog acoustical performance for terminal units. The sound performance of a terminal unit is crucial when considering the comfort of occupants within a space. For example, some places have an open-ceiling design and are well suited to quiet units to minimize distracting noises.
Topics: Acoustics, Noise Criteria, Terminals, HVAC Fundamentals, HVAC, Engineering, Design Engineering
An acoustic panel is one of many names that describe a modular component used to block or absorb noise where it’s unwanted. Also known as a double-walled panel, sandwich panel, insulated panel, thermal panel, double-walled ductwork or plenum wall, this engineered building element contains or reduces sound energy at different stages along the path that sound travels from the source to the receiver.
Topics: Acoustics, Noise Control, Noise Solution, Background Noise, Sound Absorption, Acoustic Panels, Sound Masking, Reverberation Time, Engineering, Design Engineering, Architecture
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