Flexible connection to fan
 

Flexible connections must be taut or else turbulence at the fan inlet, noise level and pressure loss are all increased.

 

Don't

Don't

Slack or misaligned flexible connectors reduce the effective duct area.  This generates turbulence and the blade tips are starved of air.  Fan performance is reduced and noise levels increased.

 

Do

Do

If flexible connectors are fitted they should be remote from the fan and ensure they are taut.  The air to the impeller tips is then not obstructed allowing the fan to operate to its optimum and minimises noise generation.

 

 

Propriety information courtesy of FANTECH (Australia)
(NOT TO BE REPRODUCED)
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