Järjestelmä ja menetelmä rajatun tilan tuulettamiseksi

摘要

The present invention relates to a system (100) for ventilating a defined space (102), such as for example an enclosed or at least partly enclosed basement, crawlspace or attic. The system (100) comprises a control unit (110) connected to at least one inside sensor (104), at least one outside sensor (106) and a controllable fan (108), the control unit (110) being configured to operate the controllable fan (102) if the absolute humidity (AHout) outside of the defined space (102) is lower or equal to the absolute humidity (AHin) within the defined space (102), and the temperature (Tin) within the defined space (102) is above a predetermined temperature when the temperature (Tin) outside of the defined space (102) is below the temperature (Tin) within the defined space (102). Advantages of the invention include energy efficient ventilation of the defined space and a high level of protecting from moisture related problems.