Centrifugal fans build pressure by accelerating air outward through a rotating impeller, making them the workhorse for HVAC air handlers, cleanrooms, dust collection and process ventilation. Articles under this tag cover working principles, backward vs forward curved impellers, performance-curve reading, selection math and maintenance practice, with LONGWELL AC/DC/EC centrifugal fan data for reference.
Data center air is expensive to move because the path is full of resis...
Read More »
A photograph of a competitor fan and a pressure figure. That is enough...
Read More »
High volume against very little pressure is a specific problem with a ...
Read More »
When an integrator asks for RS485, they are telling you the fan will b...
Read More »
Among the various fan technologies available, centrifugal fans generat...
Read More »
A -40C to +85C rating on an indoor fan looks like overkill until you n...
Read More »
More airflow from the same hole in the sheet metal. That constraint is...
Read More »
The customer sent a competitor datasheet and asked for a match. Someti...
Read More »
A HEPA filter is a wall of resistance. Getting air through one is a pr...
Read More »
The customer specified 4-pole motors and rejected 2-pole outright. Tha...
Read More »
Recent Comments