apavlin wrote:The washer/dryer has a 3-inch diameter vent hose...
(hoping I did the math right)
Endless Breeze is 12" diameter, for 113 area, less a center of 4" for 12.47, call it a net of 100 sq.in. that it moves air through (ignoring the grill).
The 3" duct's area is 7.07 sq.in..
That's more than a ten times difference.
EB's CFMs are around 250, 500, 900 cfm.
250 CFM in:
- 3" duct needs 5092.96 ft/min, or 84.8 ft/s.
- 6" duct needs 1273.24 ft/min, 21.22 ft/s.
- 10" duct needs 458.37 ft/min, 7.64 ft/s.
- 12" duct needs 318.31 ft/min, 5.31 ft/s.
250 CFM through 10" x 10" (100 sq.in.) would be at 360 ft/min, 6 ft/s.
500 CFM, 720 ft/min and 12 ft/s.
900 CFM, 1296 ft/min and 21.6 ft/s.
Through a box-cooler's three vent/pad of 10x10, they drop to 1/3 velocity. For a much nicer dwell time for the hot air in the irrigated pad. Speed through the pad is of course faster due to the reduce area of the paths through the pad, but you can see the relative differences.
I don't see much hope for a 3" duct supplying enough air to allow a swamp-cooler to cool an RV.
Video games are giving kids unrealistic expectations on how many swords they can carry.
... but don't harm the red dragon that frequents the area from time to time. He and I have an agreement.