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Achieving Airtight Ducts In Manufactured Housing, Florida Solar Energy Center, Janet Mcilvaine
Achieving Airtight Ducts In Manufactured Housing, Florida Solar Energy Center, Janet Mcilvaine
FSEC Energy Research Center®
Data and findings presented here were gathered between 1996 and 2003 during 39 factory visits at 24 factories of six HUD Code home manufacturers interested in improving the energy efficiency their homes. Factory observations typically showed that building a tighter duct system was the most cost effective way to improve the product's energy efficiency.
Air Handler Leakage: Field Testing Results In Residences, Florida Solar Energy Center, James Cummings
Air Handler Leakage: Field Testing Results In Residences, Florida Solar Energy Center, James Cummings
FSEC Energy Research Center®
Testing was performed to characterize air leakage in 30 air handler cabinets and at connections to supply and return ductwork. Operating pressures were measured in the air handler and plenums. Q 0.1 (Q 25) in the air handler averaged 23.9 cfm (11.3 l/s) in 30 homes. Leakage at the return and supply ductwork connections averaged 3.9 Q 0.1 (1.8 l/s Q 25) and 2.2 Q 0.1 (1.0 l/s Q 25), respectively. Actual return side leakage of 77.5 cfm (36.6 l/s) and supply side leakage of 3.1 cfm (1.5 l/s) are calculated based on Q 0.1 (Q 25) and measured operating …