File Size: 552 Kb
1. Instruction
2. Linx Duct Size Calculator
3. Duct Calculator
4. Flat Oval to Round
5. Number of Conduits @ equal velocity
6. Duct Diameter
7. SMACNA 2005 standards for +10 iwg and nominal weight lb/sf
How to use this Excel Sheet :-
- None of the cells are locked or protected. Keep a backup copy.
- YELLOW boxes indicate where you can input numerical values as deemed necessary
- All pressure drops are expressed in inches water gauge per 100 linear feet unless user redefines "Length"
- Calculations are based upon ASHRAE 1993 Fundamentals, Chapter 32, Duct Design
- Temperature, barometric pressure, elevation, air density, and conduit roughness coefficients are all user definable .
- TAB "Rect to FO & Round" calculates equivalent flat oval and round for a given rectangular duct cross section
- TAB "Rect to FO & Round" calculates multiple round conduits based upon "equal friction" and "equal velocity"
- TAB "Flat Oval Tables" tabulate Lindab's published standards
- TAB "Calculator" is a stand alone calculator for rectangular, flat oval, and round
- TAB "Flat Oval to Round" is a stand alone calculator to convert flat oval to equivalent round
- TABS "Equal Velocity" and "Equal deltaP" is used to make calculations for "Rectangular to FO & Round"
- TAB "Weights" is used to make calculations for "Rectangular to FO & Round"
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