The Science of ComfortTM
Air-to-water heat pump systems are highly efficient HVAC solutions, but optimizing their performance depends on addressing key factors – most notably, the hot water supply temperature (HWST). And when these heat pumps are paired with a VAV distribution system, it’s especially critical to select the correct coil configuration.
Topics: Pressure Drop, Terminals, System Efficiency, HVAC Fundamentals, HVAC, Engineering, Design Engineering
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
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