Ventilation control procedure and ventilation control means
AssigneeHalton Oy
InventorsTeuvo Pellinen, Mertsi Niemela, Erkki Aalto
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Abstract
The invention concerns a displacement ventilation control procedure in which the impurity and/or moisture concentration of the air containing impurities which accumulates in the part of the room or hall space above the staying zone and/or their changes and/or their differences are observed and the ventilation of the room or hall space is accordingly controlled. The invention also concerns a ventilation control unit.
Claims15
A displacement ventilation method wherein the first air is introduced into a room space or equivalent chamber, and in which impure air is removed from an upper part of said room space or equivalent chamber from above an impurity boundary layer created in said room space or equivalent chamber, comprising the steps of
- observing occurrence of said impurity boundary layer above a staying zone within said room space or equivalent chamber,
- when said impurity boundary layer descends below a given limiting height in said space of chamber, increasing air flow entering into said space or chamber,
- when said impurity boundary layer rises above a given upper limit within said space or chamber, reducing amount of fresh air entering into said space of chamber, and
- disposing measuring means for observing location of said boundary layer above said staying zone for carrying out said observing step,
- whereby comparatively low absolute value measuring accuracy is required for implementing and controlling said displacement ventilation method.
Dependencies are inferred from the claim text.