Please plot the system curve(ductwork,HEPA etc) against the blower performance curve.HEPA filter will give a higher airflow indicated by the intersection of the two curves
Thank you for your respond SAK9. So it is recommended to have a lesser blower airflow compare to the rated airflow indicated in HEPA filter? Sorry I am a newbie
The fan will be on a VFD so its speed will vary to maintain design airflow rate.Also bear in mind that HEPA filter constitutes a big chunk in system resistance and it goes up(doubles) as the filter gets dirty.
Thanks SAK9. I have HEPA Filter with a rated airflow of 1000 cfm and 1 in. W.G resistance. So it will be okay if my blower have an airflow of 1000 cfm then 1.5 in. W.G right?