The Science of ComfortTM
Pressure fluctuations in a comfort-cooling variable air volume (VAV) HVAC system arise from various design, operational and external factors. These issues must be addressed to ensure consistent airflow, energy efficiency and occupant comfort.
Topics: Static Pressure, Pressure Drop, System Efficiency, Thermal Comfort, HVAC Fundamentals, HVAC, Engineering, Design Engineering
In the HVAC industry, we’re seeing the trend toward decarbonization and electrification affect the built environment more and more every year. It is therefore critical to improve HVAC system performance through better design, selection and control.
Topics: GRD, Diffusers, Pressure Drop, Terminals, HVAC Fundamentals, HVAC, Engineering, Design Engineering
When it comes to commercial HVAC air distribution systems, single-duct VAV systems with hydronic reheat are one of the most popular in North America. As decarbonization and electrification efforts continue to impact the built environment, it is critical to maximize the efficiency of these systems and reduce their natural gas usage.
Topics: Pressure Drop, Terminals, HVAC Fundamentals, HVAC, Engineering, Design Engineering
There is a misconception that VAV diffusers are noisy, but a review of their performance data shows that they have a pressure versus noise relationship similar to that of all diffusers. The difference is that VAV diffusers have a built-in VAV damper and can close to a minimum, possibly building up pressure in the system. It is the higher pressure that makes diffusers noisy, and because of this, a method of pressure control should be used in every VAV diffuser system.
Topics: Diffusers, Pressure Drop, HVAC Fundamentals, HVAC, Engineering, Design Engineering, Tech Tip
Pressure drop – the difference in pressure between two points in a fluid-carrying system – is one of the most critical design considerations for air distribution equipment in the HVAC industry. The problem with pressure drop for terminal units is that there are a number of metrics that are often confused with one another despite referring to different performance variables. These include static pressure drop, velocity pressure drop, pressure drop associated with acoustics and pressure drop associated with accessories.
Topics: Pressure Drop, Terminals, HVAC Fundamentals, HVAC, Engineering, Design Engineering
Follow us:
© 2018 Price Industries. All Rights Reserved. 2975 Shawnee Ridge Court - Suwanee, Georgia 30024 - (770) 623-8050.