Coandă Effect Causes Ceiling Smudging
Coandă Effect Causes Ceiling Smudging

Coandă Effect Causes Ceiling Smudging

Posted by Bob Schneider on Aug. 15, 2011 in Facility Operations

Recently, we received a phone call from a maintenance staff member concerned about “dirt” building up around ceiling air diffusers in the common area of his mall. This is an interesting and common problem. The solution has two parts. Part One Engineers select diffusers with initial leaving air velocity and terminal velocity in mind. Careful […]

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Central Air Adds LEED Points

Central Air Adds LEED Points

Posted by Bob Schneider on Feb. 25, 2009 in Guidance

Developers are showing increasing interest in central air conditioning for many reasons. Ideally suited for multi, multi-use dense, vertical developments, central air conditioning reduces energy use by 30–50%, helps earn LEED points, eliminates rooftop condenser “farms” that preclude green roof options and become maintenance nightmares, and generates revenue. Central air conditioning systems have smaller footprints […]

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Central Air Adds LEED Points

Central Air Adds LEED Points

Posted by Bob Schneider on Feb. 25, 2009 in Energy Solutions

Developers are showing increasing interest in central air­ conditioning for many reasons. Ideally suited for multi­-story, multi­-use dense, vertical developments, central air­ conditioning reduces energy use by 30–50%, helps earn LEED points, eliminates rooftop condenser “farms” that preclude green roof options and become maintenance nightmares, and generates revenue. Central air­ conditioning systems have smaller footprints […]

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Condensate Piping Design

Posted by Dan Jackson on Jan. 23, 2009 in Engineering

The next time you are on the roof, take a look at your condensate drains from the rooftop air­ conditioning units. You will be surprised that many of the drain lines are broken or do not have a “trap” in the piping. Why do you need a trap on your rooftop air­ conditioning unit? Most […]

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