NEED HELP...... Ventilation to loud ..cant work at night

[Infinity glass]

I need some ideas of how to silence my ventilation... Neighbors are complaining at night and working during the day is not really an option...

Too much foot traffic and people always walking in the shop and watching. 59428594295943059431

[Infinity glass]

I thought about boxing it up...I also thought about putting a sillencer on the outside....Another idea I had was switching out the fan.

[misticglass]

boxing it in with insulation could work but might also be a fire hazard. Have you tried hanging the the fan by bungies or rope or some sort of rubber washers where its bolted to the wall. Sometimes the vibrations of the fan itself will go through the wall, hood, and building making the fan seem twice as loud.

Another option is a fan dimmer.

-m

[Mike_Aurelius]

Two things:

1. check the motor and fan for worn bearings. A lot of fan noise comes from bad bearings.
2. put rubber vibration isolators on all the fan mounting points -- wherever support or structural members come in contact with the fan, you will have transmitted noise.

[Infinity glass]

i have not checked the bearings... But i have noticed that it seems most of the noise is coming from the machine its self not from the actual air moving threw it

[Mike_Aurelius]

Yep. Especially in 'motor up' installations, and where there is a lot of dust, bearings can take a hit from the stress and contamination.

[gypsea]

ya know, i have inline fans and i have come to really dislike the level of noise that they make. i wish i knew of a solution for this.

[Greymatter Glass]

If you'd rather spend money than have a loud fan you can get a speed controllable fan, over size it by a large factor, and run it slow.

Also, smooth duct work with the least amount of constriction will be quieter than stuff like flexible duct, and convoluted twists and turns. Round is quieter than square as well.

[Mike_Aurelius]

ya know, i have inline fans and i have come to really dislike the level of noise that they make. i wish i knew of a solution for this.

Moving air is an inherently noisy process. As Doug notes, there are ways to handle it, but they are expensive and time consuming.

[Mike_Aurelius]

If you'd rather spend money than have a loud fan you can get a speed controllable fan, over size it by a large factor, and run it slow.

Also, smooth duct work with the least amount of constriction will be quieter than stuff like flexible duct, and convoluted twists and turns. Round is quieter than square as well.

And on large square/rectangular ducting, you also get the occasional booming sound as the duct flexes from warming up/cooling down. That can be controlled with stiffeners, which is more work and more expense.

I've always thought of ventilation as a trial and error process. You start with a design and build it, then improve it over time, dealing with air flow issues, noise, condensation, etc. It can take awhile to get even the best design exactly right...and then you change your studio and have to start all over again. :D :bangHead:

[Matt P]

ya know, i have inline fans and i have come to really dislike the level of noise that they make. i wish i knew of a solution for this.

I'm working under a hood hooked up to a huge inline right now. Pretty damn loud under the hood. Not my favorite, but much preferred to shoddy ventilation, that's for sure!

[Infinity glass]

How bad is the damage for a speed controllable fan? What i saw out here for an inline was about 1800usd. But I couldn't find a store in town i could test them out to get a noise comparison. Also trying to find a worker that knows anything about real ventilation is almost impossible.

That's why I brought it to the board.

[Mike_Aurelius]

Depends on the speed controller and whether or not the fan can even be used with a controller. First check the fan specifications. It should tell you whether or not the fan can be used with a controller, and many times it will tell you what type.

Speed controllers are basically nothing more than a rheostat, that varies the voltage to the fan. If a motor requires a constant voltage, it cannot be used with any type of controller.

[FredLight]

As long as you have it mounted to the wall like that, you'll be transmitting sound using your whole building as a speaker. That's what mine does.

It's a great fan, you should keep it.

[CripSkillz]

Tell your neighborhood to eat a dick,,,n keep working

[CripSkillz]

Sheriff's stopped by other night asking me what I was doing out here so late,, I said working. Wtf you doing here,, he said working. We left it at that he checked out my shit n left , he said I was expecting this to go much different. An they left just had to turn music down ..w3eeeeeeeeeee

[mistahead]

http://www.globalindustrial.ca/p/hvac/exhaust-fans/in-line-duct-fans/vortex-inline-duct-blower-fan-12-in-2?infoParam.campaignId=T9F&gclid=COi_l7PJmr0CFYY7MgodpmEA5g


this fan is hella quiet and moves some air.

[Infinity glass]

i am not telling my neighbors shit since I live on government land.

[Greymatter Glass]

That fan is a bit over priced (Global isn't cheap)

I use Fantech FKD-12XL fans in my hoods (basically the same as the Vortex fans). If you find a good supplier willing to work with you, they're about $550-600 each.