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Systems and methods for whole-house dehumidification based on dew point measurements

  • US 20060086112A1
  • Filed: 10/27/2004
  • Published: 04/27/2006
  • Est. Priority Date: 10/27/2004
  • Status: Active Grant
First Claim
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32. A method for dehumidifying at least one interior space of a structure, the structure having an HVAC system that includes an HVAC return duct, an HVAC supply duct, an HVAC blower and at least one HVAC control device that outputs blower call signals, the HVAC blower turned on by the HVAC system in response to the blower call signals, using a dehumidifier connected to the at least one interior space by at least the HVAC system, the dehumidifier comprising a housing and a compressor, a blower, a temperature sensor and a relative humidity sensor located within the housing, the method comprising:

  • determining if a measurement event has occurred; and

    if a measurement event has occurred;

    turning on the blower of the dehumidifier;

    optionally turning on the HVAC blower;

    waiting for a first predefined period;

    measuring a temperature of an ambient atmosphere within the housing using the temperature sensor after the first predefined period has elapsed;

    measuring a relative humidity of an ambient atmosphere within the housing using the relative humidity sensor after the first predefined period has elapsed;

    determining a dew point temperature for the interior space based on the measured temperature and relative humidity;

    determining if the determined dew point temperature is above a predetermined dew point temperature; and

    if the determined dew point temperature is above the predetermined dew point temperature turning on the compressor of the dehumidifier, drawing air to be dehumidified from at least the HVAC return duct through at least at least one dehumidifier return duct;

    dehumidifying the drawn air; and

    returning the dehumidified air to at least the HVAC supply duct through at least at least one dehumidifier supply duct.

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