Condition based energy smart air circulation system

Patent metadata

Field	Value
Publication number	US-11268725-B2
Application number	US-201716629880-A
Country	US
Kind code	B2
Filing date	Jul 10, 2017
Priority date	Jul 10, 2017
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

A method for improving the effectiveness of a building air circulation system having motorized blower and a contamination filter. The method including predicting a cost of operation of the system over an operational duration based on at least electricity consumption of the motor (115), and an operational cost to operate the filter (148), predicting a cost of maintenance of the system over the operational duration based on at least one of, a condition of the filter (148), a cost of a filter (148), a cost of labor to clean or replace the filter (148), and an effectiveness of the filter (148) over the operational duration, and balancing the cost of operation of the circulation system versus the cost of maintenance of the circulation system over the duration to recommend at least one of a filter use/bypass schedule, a filter maintenance schedule, and a fresh air input schedule satisfying an operation objective and an operational constraint.

First claim

What is claimed is:

1. A system for enhancing the operation of an air circulation system in a building, comprising:
an air handler including an indoor blower and a motor operably coupled to a duct network, the blower configured to impart airflow to the air in the duct network;
a contamination filter operably coupled to the duct network configured to remove contamination from air in the duct network;
at least one of a differential pressure sensor configured to measure a differential pressure across the contamination filter, a pressure sensor configured to measure a pressure in the duct network, a particulate concentration sensor configured to determine the presence of particulates in the air in the duct network after the contamination filter, an airflow sensor configured to measure airflow in the duct network;
an air handler controller in operable communication with at least the motor, the air handler controller configured to provide control commands to operate the motor;
a controller in operable communication with the air handler controller and at least one of the differential pressure sensor, the pressure sensor, the particulate concentration sensor, and an airflow sensor, the controller configured to execute a method for enhancing the operation and improving the efficiency of an air circulation system in a building, comprising:
predicting a cost of operation of the circulation system over an operational duration based on at least an electricity consumption associated with operation of the motor and an operational cost to operate the contamination filter;
predicting a cost of maintenance of the circulation system over the operational duration based on at least one of, an operational condition of the contamination filter, a cost of a replacement contamination filter, a cost of labor to clean or replace the contamination filter, and an effectiveness of the contamination filter over the operational duration; and
balancing the cost of operation of the circulation system versus the cost of maintenance of the circulation system over the selected operational duration to recommend at least one of a contamination filter use or bypass schedule, a contamination filter maintenance schedule, and a fresh air input schedule satisfying an operation objective and an operational constraint set by an operator.

2. The system of claim 1 , wherein at least one of the electricity consumption and the operation condition of the contamination filter is based on one or more of a measured or computed electricity consumption of the motor to produce an airflow in the system, a measured or computed electricity consumption of the contamination filter, a total pressure experienced by the motor, a differential pressure across the contamination filter, a particulate matter concentration of the air in the circulation system, and the airflow through the contamination filter.

3. The system of claim 2 , wherein the electricity consumption associated with operation of the motor is at least one of a change in consumption over the operational duration and the airflow is an airflow change over the operational duration.

4. The system of claim 2 , wherein the airflow is at least one of measured by an airflow sensor and determined based on a combination of predetermined measurements and a system operational characteristic.

5. The system of claim 4 , wherein the airflow is identified by at least one of a signal provided by the motor, a look up table, and equation or formula, and previously established testing and empirical data for a given air handler configuration; and the operating characteristic is indicative of the speed of the motor.

6. The system of claim 1 , wherein the current associated with the motor is at least one of measured by a controller, measured by a sensor, estimated in the controller, and communicated by the motor.

7. The system of claim 1 , further including a damper and a second motor configured to a provide outdoor fresh air to the duct network, wherein the predicting a cost of operation of the circulation system over the operational duration further includes at least one of a cost of the electrical current to operate the second motor, the cost of the electrical current to operate the damper over the operational duration, and the cost to condition the outdoor fresh air.

8. The system of claim 1 , wherein the balancing is based on weighted indoor air quality metrics.

9. The system of claim 1 , further including a user device with a display, the user device configured to provide a visualization to a user or property owner of the building to facilitate modifying constraints on the balancing.

10. The system of claim 1 , wherein the air circulation system further includes at least one of heating, ventilation, and cooling.

Assignees

• Chen Lei
• Carrier Corp

Inventors

• Chen Lei
• Zhao Jianwei
• Wen Sanming
• Mckinney Peter Johannes

Classifications

• G05B19/042

  using digital processors (G05B19/05 takes precedence) · CPC title

• F24F2110/40

  Pressure, e.g. wind pressure · CPC title

• F24F11/47 Primary

  Responding to energy costs · CPC title

• F24F11/46 Primary

  Improving electric energy efficiency or saving · CPC title

• F24F2110/50

  Air quality properties · CPC title