Ensures design compliance with ASHRAE standards.
Relying on standardized ASHRAE data rather than "best guesses" or old spreadsheets prevents the costly mistakes of oversizing or undersizing fans. By correctly linking fitting losses into an Excel ESP sheet, you can provide manufacturers with the exact pressure requirements needed to procure the right Air Handling Units (AHUs) or Fan Coil Units (FCUs) for your building.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Duct Fitting Database - ASHRAE
Reference these UDFs in your spreadsheet cells just like native Excel formulas. 3. Third-Party Add-ins and API Integrations ashrae duct fitting database excel link
To build a reliable duct sizing template using an ASHRAE link, structure your workbook logically across three key areas. Step 1: Establish the Inputs Table
But real fittings require two-dimensional interpolation (e.g., for W/H ratios not in the table). A basic VLOOKUP is insufficient.
Export the relevant fitting coefficient tables from the database application into standard CSV or Excel files. Ensures design compliance with ASHRAE standards
: Understanding the specific fitting codes (e.g., "CR3-1") and their geometry requirements is necessary for accurate results. or a guide on how to set up an ESP calculation spreadsheet Duct Fitting Database - ASHRAE
. This file can be opened on a desktop for further analysis or integration into larger project files. Systematic Calculation : In a typical design "story," an engineer identifies the critical path
Sum the column at the bottom of your sheet to instantly find your total external static pressure (ESP) requirements for fan selection. Best Practices for Maintaining Your Link This public link is valid for 7 days
If you cannot link the DLL, create a local Excel table using published Co values from ASHRAE Fundamentals (Chapter 34). This is static but works offline.
import ctypes from ctypes import c_long, c_double import xlwings as xw