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Exhaust Systems

The single greatest influence on a laboratory facility’s energy consumption is the size, type and number of fume cupboards or hoods and exhaust connections. Many modern laboratories can contain several hundred fume cupboards or hoods, and are a significant user of energy. Ideally, the aim should be to reduce the amount of exhaust air to the lowest safe level for any particular design because conditioned exhaust air is very energy intensive.

Devices that exhaust air from a laboratory have evolved in response to concerns about safety and energy consumption. For fume cupboards or hoods, the most important energy-efficiency measure is to incorporate variable volume exhaust airflow that changes with the position of the protective sash. Manifolding fume hoods, when appropriate, reduces exhaust system energy consumption. Manifolding can also reduce first costs and increase system flexibility. Optimizing stack heights and air stream exit velocities can minimize required energy to disperse exhaust stack effluent. Finally, even the most sophisticated, energy-efficient exhaust system can be rendered ineffective if operators are not trained and motivated to use the system to its maximum potential.

Follow the links from US Labs21 below for more information on the following:

Exhaust Devices

Variable Volume Hoods

Manifolded Exhaust System

Effluent Dispersion

User Interface