Ducting Calculation-Area: esp and ISP

 


Calculate the internal Static pressure in AHU

1. Pressure Drop for Filter

    Fine Filters: 0.0981 inch/wg

    Pre Filters: 0.19-.75 inch/wg

    HEPA Filter: 0.98-2.95 inch/wg


2. Pressure Drop for Coil

    2 Row Coil: .11 inch of Wg- 8 Fins

    4 Row Coil: 0.22 inch of wg-8 Fins

https://www.nrc.gov/docs/ML0916/ML091610395.pdf

HEPA Filter Pressure Losses The HEPA filters in the HEPA filter plenum, shown in Appendix B, have pressure losses as follows: • The 1st stage HEPA filter in the HEPA filter plenum has a pressure loss of 3 in. w.g. • The 2nd stage HEPA filter in the HEPA filter plenum has a pressure loss of 2 in. w.g.  












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