COMPUTER CONTROLLED METHOD AND SYSTEM FOR CONTROLLED NATURAL VENTILATION OF A BUILDING

WIPO Patent Application WO2000039506

A9

Controlled natural ventilation of one or more ventilation zones in a building is carried out by adjustment of passive ventilation devices, e.g. windows, according to a control strategy comprising periodically repeated estimation of a ventilation demand of a zone from a physical parameter for the zone, a desired value of the indoor temperature of the zone and the actual indoor and outdoor temperatures, correction of the estimated demand in dependence of additional indoor climate variables to determine an adjustment factor for each ventilation device, individual correction of the adjustment factors for the individual ventilation devices in dependence of additional outdoor climate variables and/or a possible user actuated adjustment of a ventilation device, and supply of the individually corrected adjustment factors for operator units for the ventilation devices for adjustment of air supply to the zone by opening and closure of said devices. To carry out the method, a computer controlled system comprises a control unit common to the ventilation devices in one zone and connected with sensors for outdoor and indoor climate variables and with an individual operating unit for user actuated control and comprising intelligent self-learning control means for processing information derived from the user controlled adjustment.

PEDERSEN MADS HEJRSKOV (DK)

PCT/DK1999/000732

March 22, 2001

December 23, 1999

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VELUX IND AS (DK)
PEDERSEN MADS HEJRSKOV (DK)

F24F11/00; (IPC1-7): F24F11/00; G05D23/19

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