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    • 3. 发明公开
    • AIR HANDLING UNIT
    • EP4242537A1
    • 2023-09-13
    • EP22161188.2
    • 2022-03-09
    • Carrier Corporation
    • RION, Loris
    • F24F3/147F24F11/49F24F11/62F24F12/00F24F110/40
    • An air handling unit 100 comprises an air treatment unit for treating at least a part of the fresh air via a treatment device 26 that gives rise to a pressure drop as well as a mixing damper 36 for controlling air flow between a return air path 18, 20 and a supply air path 22, 24 and for allowing recycling of air from a return air inlet 10 to a supply air outlet 16. A supply fan sensor 32 is used for measuring a parameter associated with air flow across the supply fan 28. An air treatment unit sensor 38 is used for measuring a pressure drop across the air treatment unit 26 in the supply air path 22, 24. The air handling unit 100 has a control system 50 in order to determine the rate of fresh air flow, as well as optionally other control functions. The control system 50 comprises a memory with stored air flow data concerning a relationship between a rate of fresh air flow at the fresh air inlet 14 and the measured pressure drop across the air treatment unit 26, wherein a processor of the control system 50 is configured to use the stored air flow data and the measured pressure drop to determine the rate of fresh air flow.