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Ventilation
Requirements
As your ventilation system changes to accommodate increased production,
ventilation needs, or process changes, more airflow is required. If your
system has not changed, but airflows are not at design performance levels,
having a STEP Audit performed will help to determine why this is happening
and if a fan change is required.
FANS
Additional
or replacement fans are needed as systems are upgraded due to increased
airflow requirements. Fans should always be evaluated during
troubleshooting. DSHAY Air Systems Inc. will troubleshoot, recommend,
repair, or install a new fan system for general equipment needs, Dust
Collector upgrades, and conversions.
Dust Collector
Capacity
A STEP Audit analyzes your air-to-cloth ratio to determine the operating
limits of the dust collector as compared to industry standards.
Ductwork
Existing
ductwork diameters from each individual vent point are measured and
cross-sectional areas are calculated to ensure the sizes are correct for
the required air volumes.
Hoods and
Recommended Volumes
The hooding design at pickup points should provide ventilation of the dust
point, while minimizing the amount of product introduced into the dust
collection system. Improperly designed hoods tend to increase the grain
loading beyond what the collector was originally designed to handle. The
Industrial Ventilation Guide recommends standard design practices for hood
design and volumetric requirements for transfer points.
Based on
these practices, specific minimum and maximum volumes are calculated and
compared to required volumes. A STEP Audit recommendation is then made
regarding the system's potential to perform as installed.
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