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Simulation Nation

Thermal Stratifcation

Posted by Tommy Mello on Jul 11, 2019 1:34:00 PM

As buildings move air and heat around, the higher temperature, lower density air naturally rises upward.  This phenomena is known as Thermal Stratification and is not directly visible.  Our expertise with simulation provides an opportunity to visualize the delineation of temperature gradients and use that insight to reduce operating costs.

Our ability to simulate and interpret results was used to help a company reduce their annual energy costs by nearly $50k!  The 1M sq ft facility utilized numerous HVAC returns located along the ceiling, returning the hottest air to the HVAC system. 

By visualizing the thermal stratification and height of higher air temperature layers along the ceiling, an extension to return duct work was designed and added to return air ~3F cooler than before.  This small change reduced the HVAC load by almost 2,000 cooling hours/year @ $0.08/kWh, saving $50k annually!

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Extended duct returning cooler air to HVAC system

If you have HVAC equipment in a building space, reach out to us for a review of your building performance and a chance to reduce your energy costs associated with operating HVAC systems.

Topics: Simulation, thermal

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