mrb627
Well-known member
Run Length
Calculating the run, including the two 90's, it is about 33 feet.
Malcolm
Calculating the run, including the two 90's, it is about 33 feet.
Malcolm
Dryer Vent Booster Fan
- Thread starter mrb627
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mrb627
Well-known member
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
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
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.
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.
ovrphil
Well-known member
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!
ovrphil
Well-known member
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. 
[this post was last edited: 10/25/2012-07:43]
[this post was last edited: 10/25/2012-07:43]Loading…
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arbilab
Well-known member
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.
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.
