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Thread Number: 42820
Dryer Vent Booster Fan |
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| Post# 629830 10/6/2012 at 13:04 (4,213 days old) by mrb627 (Buford, GA) | ||
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| Post# 630316 , Reply# 3 10/8/2012 at 19:55 (4,211 days old) by DirectDriveDave () | ||
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The dryers in my college dorm building had boosters, but only because the pipes travel a little more distance than normal. | ||
| Post# 630452 , Reply# 5 10/9/2012 at 12:42 (4,210 days old) by mrb627 (Buford, GA) | ||
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Booster Fan | ||
Post# 630472 , Reply# 6 10/9/2012 at 13:46 (4,210 days old) by joe_in_philly  (Philadelphia, PA, USA) |
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| Post# 630904 , Reply# 8 10/11/2012 at 16:33 (4,208 days old) by mrb627 (Buford, GA) | ||
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Vent Kit Arrived | ||
| Post# 631767 , Reply# 9 10/15/2012 at 07:00 (4,204 days old) by mrb627 (Buford, GA) | ||
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Installed | ||
| Post# 631768 , Reply# 10 10/15/2012 at 07:02 (4,204 days old) by mrb627 (Buford, GA) | ||
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Another Shot | ||
| Post# 631769 , Reply# 11 10/15/2012 at 07:05 (4,204 days old) by mrb627 (Buford, GA) | ||
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Airflow.
You could really hear the air being forced out of the vent outside. The dogs sat out in the yard and looked up at the vent during my test run.
Also, inside when the dryer would pause to reverse the drum rotation, you could hear the suction being pulled through it. Don't think I will ever have to worry about cleaning the exhaust line again. Malcolm | ||
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Post# 631815 , Reply# 12 10/15/2012 at 11:32 (4,204 days old) by joe_in_philly (Philadelphia, PA, USA) |
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| Post# 631818 , Reply# 13 10/15/2012 at 11:37 (4,204 days old) by mrb627 (Buford, GA) | ||
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Faster Drying | ||
| Post# 631948 , Reply# 14 10/15/2012 at 21:41 (4,204 days old) by A440 () | ||
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Great job Malcolm! Do you have a switch that turns the fan on, or is it automatic when you start the dryer? One of my dryers has a very long vent run and I am thinking about trying this out. Thanks for the pictures. Brent | ||
| Post# 632075 , Reply# 15 10/16/2012 at 08:58 (4,203 days old) by mrb627 (Buford, GA) | ||
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Pressure Activated | ||
| Post# 632078 , Reply# 16 10/16/2012 at 09:43 (4,203 days old) by A440 () | ||
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Thanks Malcolm! | ||
| Post# 632217 , Reply# 17 10/16/2012 at 23:23 (4,202 days old) by danmantn (Tennessee) | ||
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| Post# 632257 , Reply# 18 10/17/2012 at 05:44 (4,202 days old) by mark_wpduet (Lexington KY) | ||
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| Post# 632264 , Reply# 19 10/17/2012 at 06:00 (4,202 days old) by mrb627 (Buford, GA) | ||
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Run Length | ||
| Post# 633771 , Reply# 20 10/23/2012 at 17:32 (4,196 days old) by mrb627 (Buford, GA) | ||
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Fan performance.
Well, I made it through the weekend and did an enormous amount of laundry to help evaluate the booster fan performance. All in all, the amount of time it takes to dry a load of clothing averages about 20% reduction.
I feel that the fan would perform better if I were using an American style dryer instead of the Miele. The Miele dryer that I have doesn't always produce enough airflow to engage the booster fan. As a result, the dryer may run for several minutes before the fan spins up. When the fan does power up, there is a ridiculous amount of air pulled through the dryer. Bottom line, I am satisfied that the fan does what it promised to do. And if I don't have to clean out the duct work twice a year, then it was worth the money. Malcolm | ||
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Post# 633818 , Reply# 21 10/23/2012 at 20:51 (4,196 days old) by combo52 (50 Year Repair Tech Beltsville,Md) |
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Long Dryer Vents Thanks for sharing your experiences with the booster blower for your dryer Malcolm.
I have found that compact American and all European 24" dryers should NEVER be used with a vent system longer than 6 or 8 feet and two elbows. Anything longer that this requires some sort of booster or just inside venting with good additional ventilation used in the area where the dryer is located. | ||
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Post# 633828 , Reply# 22 10/23/2012 at 21:24 (4,196 days old) by ovrphil (N.Atlanta / Georgia ) |
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Great idea - good device choice - never knew about this - why I like AW.org. I 've never seen a dryer vent run of more than 6-8 feet, at the most. If you're shaving off 20%, and your Miele was running 30 -40 minutes or more each time you did loads of wash, that helps on the annual electrical. Good job!
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| Post# 634091 , Reply# 23 10/24/2012 at 23:34 (4,194 days old) by Iowegian () | ||
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@ovrphil: There is a difference between physical length and effective length of duct run. The difference is important. Most people don't need a dryer duct booster fan, unless there's a problem with the original house design or construction. | ||
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Post# 634132 , Reply# 24 10/25/2012 at 07:00 (4,194 days old) by ovrphil (N.Atlanta / Georgia ) |
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Malcom: But, it brought to mind...a long time friend's father, a chief mechanical engineer, whose firm designed the Saturn V rocket cooling system(the system that sprayed water on the engines to prevent meltdown of launch structure)... passively mentioned math and physics relative to his work - kind of entertaining, too( Bernoulli principle, thermal dynamics, etc.) He's gone now, but your mentioning of "effective length" reminded me of him and it led me to a link(read about half).....thankfully, most don't need a fan..or that link! ...but it's good to see someone using their engineering skills here...never know, one day that idea might be useful to me/anyone. :-)
CLICK HERE TO GO TO ovrphil's LINK This post was last edited 10/25/2012 at 07:43 | ||
| Post# 634234 , Reply# 25 10/25/2012 at 15:14 (4,194 days old) by arbilab (Ft Worth TX (Ridglea)) | ||
Notice one pipe (booster inlet?) is corrugated and the other is smooth. That makes a HUGE difference in flow resistance. Had the entire pipe been smooth the booster may not have been needed.
I had a high-flow vacuum device (broadcast industry) with very noisy vacuum pumps. The vendor said the pumps could not be remoted. They had tried it with the same corrugated hoses used within the machine and it definitely did not work. I used food processor hose, same size only smooth inside, moved the pumps to an adjacent utility room. Worked fine and a lot less noise fatigue for the guys in the room with the machine. | ||
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