Name:
CH-09-063 (RP-1333) -- Pressure Losses in 12”, 14”, and 16” Non-Metallic Flexible Ducts with Compression and Sag PDF
Published Date:
2008
Status:
Active
Publisher:
ASHRAE
This paper is based on findings resulting from ASHRAE Research Project RP-1333.
A study was conducted to measure air pressure loss in nonmetallic flexible ducts and included 12” (305 mm), 14” (356 mm) and 16” (406 mm) diameter ducts on a flat surface and also positioned over joists on 24” (610 mm) centers. For this study, flexible duct compression configurations were fully stretched and 4%, 15%, 30% and 45% compressed. Measurements were performed at each compression. All tests were performed in conformance to ASHRAE 120-1999, Methods of Testing to Determine Flow Resistance of HVAC Air Ducts and Fittings (ASHRAE 1999) with a positive pressure, blowthrough configuration. The data from this study exhibited higher pressure loss than prior Air Conditioning Contractors of America (ACCA) or ASHRAE data. Measured pressure losses were 2 to 13 times higher than round steel ducts.
Units: Dual
| File Size : | 1 file , 2.7 MB |
| Note : | This product is unavailable in Russia, Belarus |
| Number of Pages : | 7 |
| Product Code(s) : | D-CH-09-063 |
| Published : | 2008 |
