Patent attributes
This disclosure describes a positive pressure greenhouse including one or more plants disposed on a plant table surface, wherein the plant table surface is disposed above ground level and has an area below the plant table surface and above the ground, one or more upper wall tubes including one or more upper wall tube fans disposed above the plant table surface, one or more lower sidewall tubes comprising one or more lower side wall tube fans disposed below the plant table surface which may be at or near ground level. The one or more lower sidewall tube fans may be configured to draw air from the area below the plant table surface, wherein air is further drawn down from above the plant surface table, e.g., the area of the upper wall tubes and upper wall tube fans, to ground level of the greenhouse. The one or more lower wall tube fans may also be configured to blow air into the area below the plant table surface wherein the blown air further rises above the plants and into the area of the upper wall tubes and upper wall tube fans.
