Positive-pressure systems and methods for animal cooling and/or building ventilation

A modular plenum for a cooling and/or ventilation system for an animal building, the plenum comprising:

• (a) an elongate plenum body made up of at least two coupleable sections, the elongate plenum body comprising:
• (i) a bottom wall, a top wall, two side walls, and two end walls defining an interior within the elongate plenum body;
• and
• (ii) at least two distribution tubes extending through the bottom wall from the interior to an area exterior to the plenum body;
• and
• (b) at least one fan disposed in at least one of the end walls, wherein the at least one fan is configured to urge air into the interior of the elongate plenum body,

A cooling and/or ventilation system for an animal building, the system comprising:

• (a) at least one elongate modular plenum body made up of at least two coupleable sections, the elongate modular plenum body comprising a bottom wall, a top wall, two side walls, and two end walls defining an interior within the elongate modular plenum body;
• (b) at least two distribution tubes extending through the bottom wall of the at least one elongate modular plenum body from the interior to an area exterior to the plenum body;
• and
• (c) at least one fan disposed in at least one of the end walls of the at least one elongate modular plenum body,
• wherein the at least one elongate modular plenum body is disposed beneath a roof of the animal building such that the bottom wall is disposed at a predetermined distance above a floor of the animal building.