Systems and Computer Program Products for Measuring Airflow Rates in Heating, Ventilating, and Air Conditioning (HVAC) Ducts and HVAC Systems Including the Same
First Claim
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1. An airflow measurement system configured to be received in a duct of a heating, ventilating and air conditioning (HVAC) system, the air flow measurement system comprising:
- a housing; and
at least one cell positioned in the housing, the at least one cell being configured such that air flows through the at least one cell when the flow measurement system is positioned in the duct of the HVAC system,wherein at least one of the at least one cell includes a self-heated thermistor.
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Abstract
An airflow measurement system configured to be received in a duct of a heating, ventilating and air conditioning (HVAC) system is provided. The air flow measurement system includes a housing, and a plurality of cells positioned in the housing, the plurality of cells being configured such that air flows through the plurality of cells when the flow measurement system is positioned in the duct of the HVAC system, wherein at least one of the cells includes a self-heated thermistor.
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Citations
26 Claims
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1. An airflow measurement system configured to be received in a duct of a heating, ventilating and air conditioning (HVAC) system, the air flow measurement system comprising:
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a housing; and at least one cell positioned in the housing, the at least one cell being configured such that air flows through the at least one cell when the flow measurement system is positioned in the duct of the HVAC system, wherein at least one of the at least one cell includes a self-heated thermistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A heating, ventilating and air conditioning (HVAC) system, the system comprising:
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at least one duct; an airflow measurement system positioned in the duct, the airflow measurement system including at least one thermistor pair including a self-heated thermistor and a reference thermistor; a power module configured to regulate a variable amount of power delivered to the self-heated thermistor; an analog to digital convertor (ADC) configured to receive a non-linear output of the ADC; a calculation module configured to receive an output of the ADC and calculate data used to control air flow in the HVAC system. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A computer program product for measuring air flow in a heating, ventilation and air conditioning (HVAC) system, the computer program product comprising:
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a non-transitory computer readable storage medium including computer readable program code embodied therein, the computer readable program code comprising; computer readable program code configured to receive data collected in an HVAC system using a high-resolution system including at least one thermistor pair; and computer readable program code configured to calculate configuration details for the HVAC system based on the received collected data associated with the HVAC system and data associated with other HVAC systems provided by a centralized reference model. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification