| CPC F24F 11/30 (2018.01) [G01K 13/02 (2013.01); G01K 17/06 (2013.01); G01N 25/20 (2013.01); G01N 25/56 (2013.01); F24F 2110/10 (2018.01); F24F 2110/20 (2018.01); F24F 2110/30 (2018.01); G01F 1/68 (2013.01); G01K 13/024 (2021.01); G01P 5/16 (2013.01)] | 32 Claims |
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1. A system, comprising:
at least one airstream sensor device configured to be disposed in an air flow conveyance structure of a Heating, Ventilation and Air Conditioning (“HVAC”) system, and comprising
a housing comprising an elongate hollow shaft configured to extend between a first inner wall of the air flow conveyance structure and an opposing second inner wall of the air flow conveyance structure,
a plurality of openings formed in the elongate hollow shaft and spaced apart along an elongate length of the housing,
a plurality of sensors respectively disposed in the plurality of openings formed in the elongate hollow shaft of the housing, where a temperature and an airflow rate are simultaneously measured at each given location of a plurality of different locations within a single cross-sectional plane of the air flow conveyance structure, and a relative humidity of a single airstream is measured at a given location along the single cross-sectional plane; and
a transmitter communicatively coupled to the at least one airstream sensor device and configured to
receive relative humidity measured values, temperature measured values, and airflow measured values from the at least one airstream sensor device,
compute an airstream velocity value, at each location of the different locations within the single cross-sectional plane of the air flow conveyance structure, using a respective one of the temperature measured values and a respective one of the airflow measured values,
generate a mass flow rate profile of the single airstream based on the airstream velocity values, the mass flow rate profile indicating variations of mass flow rate across an air flow of the single cross-sectional plane of the air flow conveyance structure,
compute a velocity weighted temperature value for the single airstream by weighting each of the temperature measured values by a respective one of the airstream velocity values, wherein the velocity weighted temperature value accounts for variations in at least one of the temperature and the airstream's velocity within the single cross-sectional plane at the plurality of different locations in the air flow conveyance structure;
use the humidity measured values and the velocity weighted temperature value to determine a psychrometric property at a plurality of points along the single cross-sectional plane; and
cause operations of the HVAC system to be controlled based on the determined psychrometric properties and the mass flow rate profile.
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