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AssigneeJohnson Controls Technology Company
InventorsRachel A. Glanzer, Brennan H. Fentzlaff, Kirk H. Drees, John M. House, Timothy I. Salsbury
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A method for controlling flow in a heating, ventilation, and air conditioning (HVAC) system that imposes an upper limit on the flow of fluid through a heating or cooling coil. Imposing this limit on the flow rate ensures that a temperature change across the coil remains above a minimum threshold and can significantly reduce energy waste. The method includes receiving a first temperature measurement associated with an inlet of the coil, receiving a second temperature measurement associated with an outlet of the coil, and receiving a flow measurement associated with the valve, applying the first temperature measurement, the second temperature measurement, and the flow measurement as input to a model, determining a maximum flow rate that ensures that a difference between the first temperature measurement and the second temperature measurement is above a threshold using the model, and operating the valve in accordance with the maximum flow rate.
A method for operating a valve that controls flow of a liquid through a coil in a heating, ventilation, and air conditioning (HVAC) system, the method comprising:
A heating, ventilation, and air conditioning (HVAC) system comprising:
A flow control device for use in a heating, ventilation, and air conditioning (HVAC) system, the device comprising:
Dependencies are inferred from the claim text.