| Your situation | Best method | |----------------|--------------| | Occasional use, no coding | Buy DuctLink add-in | | Already have ASHRAE DLL, use Excel daily | VBA wrapper (Method A) | | Python user, want flexible reporting | xlwings + ctypes (Method B) | | Cannot purchase DLL | Static lookup table (Section 7) |
If you own the desktop version of the database, the backend often relies on a Microsoft Access ( .mdb or .accdb ) or SQL database. Locate the source database file on your local drive. In Excel, navigate to . ashrae duct fitting database excel link
Historically, calculating pressure losses through duct fittings was a manual, tedious process involving charts, tables, and interpolation. You had to look up the loss coefficient ($C_f$), determine the velocity pressure, and manually calculate the total loss. What version of Excel are you running
Do you use the or a cloud/web-based portal ? What version of Excel are you running? Do you prefer using Power Query (SQL/Access) or VBA macros ? tedious process involving charts
Eliminate manual data-entry typos when transferring coefficients from a lookup table to a calculation sheet.
The ASHRAE Duct Fitting Database with Excel Link is the definition of a "force multiplier." It does not replace the engineer's judgment—you still have to select the right fitting type—but it removes the arithmetic drudgery.
per path → fan sizing.