A duct fan
blows across the heating element toward the back of the cabinet, forcing recently heated air down the back duct.
Before installing a duct fan
, try to adjust all the duct dampers to get more heat in that room.
The heat removal from the wall just after start-up peaks at 200 W or about 30 W/[m.sup.2] over the 7 [m.sup.2] surface area of the panel with an energy expenditure of 17 W for the duct fan
Dual duct fan
and reheat savings are the same as the VAV savings previously seen in a constant volume reheat system: $17,794/year.
Recessed duct fans
are sized to fit either a 4 x 10-in.
While not actually a source of supplemental heat, duct fans
are designed to boost the flow of air from the central heating system to areas in a house that are hard to heat or cool.
ALDES offers powerful inline duct fans
for use with nonmotorized range hoods to eliminate exhaust fan noise in kitchens by remote mounting (attic or basement) of the fans.