System and method for submetering of a heating, ventilation, and/or air conditioning (HVAC) system
AssigneeJohnson Controls Technology Company
InventorsAron M. Seiler, Philip G. Smyth, Rajiv K. Karkhanis
Life of this patent
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Abstract
In an embodiment of the present disclosure, a method for determining power consumption of a unit of a heating, ventilating, and air conditioning (HVAC) system includes providing conditioned air to the unit from an HVAC unit of the HVAC system. The method also includes receiving power data indicative of a total power consumed by the HVAC unit, receiving airflow data indicative of a rate of the conditioned air received by the unit from the HVAC unit, determining a power consumption of the unit based on the power data and the airflow data, and outputting the power consumption of the unit.
Claims24
A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- an HVAC unit configured to supply conditioned air to a duct system of the HVAC system and having an HVAC unit controller;
- an energy meter configured to provide the HVAC unit controller with feedback indicative of power consumed by the HVAC unit;
- a variable air volume (VAV) box coupled to the duct system and configured to supply the conditioned air to a unit of a building, wherein the VAV box includes a VAV box controller;
- an airflow meter configured to provide the VAV box controller with additional feedback indicative of a of flow rate of the conditioned air supplied to the unit via the VAV box;
- and
- a metering system having a supervisory controller communicatively coupled to the HVAC unit controller and the VAV box controller, wherein the supervisory controller is configured to receive the feedback and the additional feedback to determine an individualized power consumption for the unit based on the flow rate of the conditioned air supplied to the unit and the power consumed by the HVAC unit.
A method for determining power consumption of a unit of a heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- providing conditioned air to a duct system of the HVAC system via an HVAC unit of the HVAC system;
- supplying the conditioned air to a unit of a building via a variable air volume (VAV) box coupled to the duct system;
- receiving, at an HVAC unit controller of the HVAC unit, feedback indicative of a total power consumed by the HVAC unit;
- receiving, at a VAV box controller of the VAV box, additional feedback indicative of a flow rate of the conditioned air discharged from the VAV box into the unit from the HVAC unit;
- receiving, at a supervisory controller of the HVAC system, the feedback and the additional feedback to determine a power consumption of the unit based on the total power consumed by the HVAC unit and the flow rate of the conditioned air;
- and
- outputting the power consumption of the unit.
A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- an HVAC unit configured to supply conditioned air to a duct system of the HVAC system and having an HVAC unit controller;
- an energy meter configured to provide the HVAC unit controller with feedback indicative of power consumed by the HVAC unit;
- a variable air volume (VAV) box coupled to the duct system and configured to supply the conditioned air to a unit of a building, wherein the VAV box includes a VAV box controller;
- an airflow meter configured to provide the VAV box controller with additional feedback indicative of a flow rate of the conditioned air supplied to the unit via the VAV box;
- and
- a metering system configured to determine a power consumption of the unit, wherein the metering system comprises:
- a supervisory controller having a processor;
- and
- a non-transitory, computer-readable media having executable instructions stored thereon, the executable instructions comprising instructions configured to receive the feedback and the additional feedback and to determine the power consumption of the unit based on the flow rate of the conditioned air supplied to the unit and the power consumed by the HVAC unit.
Dependencies are inferred from the claim text.