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METHOD FOR EVALUATING THE CLEANING STATE OF AN AERATION AND/OR CONDITIONING PLANT OF A ROOM

  • US 20160238507A1
  • Filed: 09/30/2014
  • Published: 08/18/2016
  • Est. Priority Date: 10/07/2013
  • Status: Active Grant
First Claim
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1. Method for evaluating cleaning status of an aeration and/or conditioning plant of a room, the plant having ducts and at least an air vent inside said room, comprising at least the steps of:

  • performing a first powder concentration measurement (S), obtained as average of a plurality of powder concentration measurements performed during a first predetermined time period (Δ

    T1) of plant inactivity, inside said room at said air vent;

    performing a series of powder concentration measurements during a second predetermined time period (Δ

    T2) at starting of the plant inside said room at said air vent;

    extracting a value of maximum concentration (P) from said series of measurements;

    calculating a duct cleaning index (DCI) as difference between said value of maximum concentration (P) and said first concentration measurement (S), said duct cleaning index (DCI) being indicative of a dirty state of the ducts if it is greater than or equal to a first predetermined threshold value (TOLL1).

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