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Ducted vs. Ductless Lab Ventilation — What the Decision Really Involves

Laboratory ventilation design is fundamentally a risk management exercise. One of the most common decisions faced during laboratory planning is...
Laboratory ventilation design is fundamentally a risk management exercise. One of the most common decisions faced during laboratory planning is whether contaminated air should be ducted and exhausted from the building, or filtered and recirculated within the space. A recent whitepaper examines those tradeoffs from an engineering perspective, with an emphasis on how each approach performs over time. Two approaches to the same problem Ducted ventilation systems remove contaminated air from the laboratory and discharge it outside the building. Because...
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Is Your Lab Exhaust System Doing More Work Than It Needs To?

Laboratory exhaust systems are among the major energy consumers in research buildings, and they run continuously. In facilities with a...
Laboratory exhaust systems are among the major energy consumers in research buildings, and they run continuously. In facilities with a single fume hood or low hood density, the architecture of that exhaust system is often carried over from designs built for much larger, centralized laboratories. A recent whitepaper evaluates whether that default assumption holds up when analyzed at the single-hood scale. What every lab exhaust system must do Laboratory fume hood exhaust systems have two jobs: keep contaminants contained at...
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