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Smart Pumping Control for Hydronic Distribution Systems

The invention relates to HVAC systems and more specifically to a control system and method for optimizing the energy usage of such HVAC systems. A new control method for variable speed pumps in hydronic distribution systems is disclosed. This new control method enables a pump to provide only the needed flow rate to each individual device with minimum head loss. It calculates the needed flow rate using a virtual sensing technique, predicts the required pumping head for delivering the needed flow based on the self-learned hydronic characteristics of the distribution system; monitors the heat transfer performance of each terminal unit; and fine-tune the pumping head dynamically by adjusting the pump speed to ensure sufficient flow is delivered to each terminal unit.

Energy Transportation Science Division
Oak Ridge National Laboratory
Oak Ridge National Laboratory
Phone: (865) 241-3808
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