Wall assembly

An inner wall for positioning relative to an outer wall to provide a wall assembly for mixing polluted air with less polluted air to provide moderately polluted air, the polluted air comprising at least one roadway pollutant in at least one elevated concentration moving from a roadway region proximal to a roadway toward a leeward region substantially above a leeward area, the less polluted air comprising said at least one roadway pollutant in at least one lower concentration located distal to the roadway, and the moderately polluted air comprising said at least one roadway pollutant at a reduced concentration disposed proximal to the leeward area, the outer wall including an upper end thereof positioned a first height above the ground, the inner wall comprising:

• a lower portion positionable between the roadway and the outer wall, the lower portion comprising a top end thereof positioned at a second height above the ground, the second height being substantially equal to the first height, the lower portion extending between the upper end and a bottom end thereof;
• the lower portion being positionable spaced apart from the outer wall by at least one preselected distance to at least partially define a first channel therebetween;
• a deflector positioned at the top end of the lower portion, the deflector comprising an upper end thereof positioned at a first preselected height above the ground to permit at least a portion of said less polluted air to pass over the upper end while the less polluted air moves from the roadway region toward the leeward region;
• and
• the lower portion being formed to at least partially define at least one aperture for directing a first part of said polluted air into the first channel, such that said first part of said polluted air is directed substantially upwardly thereby to mix with said less polluted air to provide said moderately polluted air proximal to said leeward area.

A method of mixing polluted air with less polluted air to provide moderately polluted air, the polluted air comprising at least one roadway pollutant in at least one concentration moving from a roadway region proximal to a roadway toward a leeward region substantially above a leeward area, the less polluted air comprising said at least one roadway pollutant in at least one lower concentration located distal to the roadway, and the moderately polluted air comprising said at least one roadway pollutant at a reduced concentration disposed proximal to the leeward area, the method comprising:

• (a) providing an outer wall spaced apart from the roadway;
• (b) providing an inner wall disposed between the roadway and the outer wall, the inner wall comprising:
• a lower portion extending between a top end thereof and a bottom end thereof, and positionable a preselected distance apart from the outer wall to at least partially define a first channel therebetween;
• the lower portion being formed to at least partially define at least one aperture for directing a first part of said polluted air into the first channel;
• a deflector positioned at the top end of the lower portion, the deflector comprising an upper end thereof positioned at a first preselected height above the ground to permit at least a portion of said less polluted air to pass over the upper end while the less polluted air moves from the roadway region toward the leeward region;
• and
• (c) directing said first part of said polluted air through the first channel such that said first part is directed upwardly thereby to mix with said less polluted air for providing said moderately polluted air proximal to the leeward area.

A method of mixing polluted air with less polluted air to provide moderately polluted air, the polluted air comprising at least one roadway pollutant in at least one concentration moving from a roadway region proximal to a roadway toward a leeward region substantially above a leeward area, the less polluted air comprising said at least one roadway pollutant in at least one lower concentration located distal to the roadway, and the moderately polluted air comprising said at least one roadway pollutant at a reduced concentration disposed proximal to the leeward area, the method comprising:

• (a) dividing air from the roadway region into a lower part and an upper part;
• (b) permitting at least a portion of the upper part to flow substantially in at least one flow direction toward the leeward region;
• and
• (c) directing the lower part substantially upwardly in a direction substantially transverse to said at least one flow direction to intersect with the upper part and to mix the polluted air with said less polluted air, to provide said moderately polluted air proximal to the leeward area.

A wall assembly for mixing polluted air with less polluted air to provide moderately polluted air, the polluted air comprising at least one roadway pollutant in at least one elevated concentration moving from a roadway region proximal to a roadway toward a leeward region substantially above a leeward area, the less polluted air comprising said at least one roadway pollutant in at least one lower concentration located distal to the roadway, and the moderately polluted air comprising said at least one roadway pollutant at a reduced concentration disposed proximal to the leeward area, the wall assembly comprising:

• means for dividing air from the roadway region into a lower part and an upper part;
• means for permitting at least a portion of the upper part to flow substantially in at least one flow direction toward the leeward region;
• and
• means for directing the lower part substantially upwardly in a direction substantially transverse to said at least one flow direction to intersect with the upper part and to mix the polluted air with said less polluted air, to provide said moderately polluted air proximal to the leeward area.