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#1
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Breathable Noise Filter
I'm building a box to hold a small compress. Purpose is to mask as
much of the compressor sound as possible. Of course, the compressor will need to have air intake and output availability. Can anybody recommend a filter or filter material that reduces noise transmission but still allows air to pass through it? Thanks |
#2
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Breathable Noise Filter
Can anybody recommend a filter or filter material that reduces noise transmission but still allows air to pass through it? Thanks The real idea is "baffling", not restricted pass through. I am not saying it is a baffling question, I am saying build a box with baffles. You can line the baffles with foam rubber, carpet, ceiling tiles or any sound absorbent material. You don't want to restrict airflow, just make the sound waves travel farther, change direction and crash into surfaces that can absorb them as they try to exit the box. With a little planning you can make the path to outside like 100 feet in a very confined area by making a little maze of sorts. Making the sound change direction will really deaden it if there are surfaces to diffuse it vs bouncing it along. One qualification, I have no real background in sound wave theory so this is just my intuited response. |
#3
Posted to rec.woodworking
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Breathable Noise Filter
On Tuesday, July 29, 2014 12:55:47 PM UTC-5, wrote:
I'm building a box to hold a small compress. When I first read that line, I thought of injury.... a compress for a wound or ice pack on a sore muscle, etc. LOL. Purpose is to mask as much of the compressor sound as possible. Of course, the compressor will need to have air intake and output availability. Can anybody recommend a filter or filter material that reduces noise transmission but still allows air to pass through it? Thanks Cloth is a good sound barrier. Why not make a small 3-sided, w/overhang, room divider type barrier, with heavy cloth or some draping/shielding material, if that's applicable, see how that might work. I would hesitate boxing-in a compressor, maybe. Sonny |
#4
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Breathable Noise Filter
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#5
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Breathable Noise Filter
On Tuesday, July 29, 2014 10:55:47 AM UTC-7, wrote:
I'm building a box to hold a small compress[or]. Can anybody recommend a filter or filter material that reduces noise transmission but still allows air to pass through it? Anything that has different sound propogation than air will work. I'd be tempted to start with coarse steel wool contained by screen wire. Alas, low frequency noise will require some thickness of filter to get any attenuation. For best performance, use distance: put the compressor on the roof, and run extra plumbing and wire length. |
#6
Posted to rec.woodworking
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Breathable Noise Filter
On 7/29/2014 2:57 PM, SonomaProducts.com wrote:
Can anybody recommend a filter or filter material that reduces noise transmission but still allows air to pass through it? Thanks The real idea is "baffling", not restricted pass through. I am not saying it is a baffling question, I am saying build a box with baffles. You can line the baffles with foam rubber, carpet, ceiling tiles or any sound absorbent material. You don't want to restrict airflow, just make the sound waves travel farther, change direction and crash into surfaces that can absorb them as they try to exit the box. With a little planning you can make the path to outside like 100 feet in a very confined area by making a little maze of sorts. Making the sound change direction will really deaden it if there are surfaces to diffuse it vs bouncing it along. One qualification, I have no real background in sound wave theory so this is just my intuited response. Take a look he http://home.comcast.net/~prestondrak...f_Workshop.htm The Shop Vac enclosure demonstrates the baffle idea pretty well. |
#7
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Breathable Noise Filter
wrote in message ... I'm building a box to hold a small compress. Purpose is to mask as much of the compressor sound as possible. Of course, the compressor will need to have air intake and output availability. Can anybody recommend a filter or filter material that reduces noise transmission but still allows air to pass through it? Thanks I have a large air compressor. It is in the attached garage. I piped it down to my basement work shop. Cannot hear it run. WW |
#8
Posted to rec.woodworking
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Breathable Noise Filter
On Tue, 29 Jul 2014 13:47:00 -0700 (PDT), whit3rd
wrote: On Tuesday, July 29, 2014 10:55:47 AM UTC-7, wrote: I'm building a box to hold a small compress[or]. Can anybody recommend a filter or filter material that reduces noise transmission but still allows air to pass through it? Anything that has different sound propogation than air will work. I'd be tempted to start with coarse steel wool contained by screen wire. Alas, low frequency noise will require some thickness of filter to get any attenuation. For best performance, use distance: put the compressor on the roof, and run extra plumbing and wire length. The garage works well. I'd do something like that for dust, too, except that it moves too much air (kinda the idea). |
#9
Posted to rec.woodworking
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Breathable Noise Filter
wrote in message ... I'm building a box to hold a small compress. Purpose is to mask as much of the compressor sound as possible. Of course, the compressor will need to have air intake and output availability. Can anybody recommend a filter or filter material that reduces noise transmission but still allows air to pass through it? Foam rubber open cell, like couch cushions, but this is a bad idea, unless substantial extra forced ventilation is added. A squirrel cage blower of at least 1/3 HP would be needed to keep the air inside from overheating. The other ideas such as baffles will also not allow enough fresh air in to keep things cool. Look up how many BTU's are produced per amp/volt of electricity, then multiply that by how many amps your compressor is. Nearly all of that electrical energy is turned into heat. With an overheated enclosure, you risk burning out the motor, and seizing the compressor itself. I'm with others. Locate it outside, or somewhere where the noise will not be an issue. -- Jim in NC --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#10
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Breathable Noise Filter
I'm with others. Locate it outside, or somewhere where the noise will not
be an issue. I live in an apartment and do have a balcony, but relocating the compressor out there is not really a viable option. The compressor is a Senco PC1010 which is pretty small, so I may be able to get away with rubber baffles and reasonably quiet fans to input and output air flow. Hmmm, guess I have some things to consider. |
#11
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Breathable Noise Filter
On Wednesday, July 30, 2014 5:37:20 AM UTC-5, wrote:
I live in an apartment .... Hmmm, guess I have some things to consider. In theaters, large thick curtains are used to dampen and prevent echo. Try installing some thick drapes, on 3 sides and over the compressor, to see how that works. Use some thick bath towels or bed blanket for the testing of the drape option. Use dining chairs for the towel/blanket props, and maybe a broom stick, across the tops of the chairs, for draping overhead. You can test this option at no cost. If the test draping works reasonably well, purchase some thick (remnant! *cheap) fabric (or thick blankets, from Goodwill, Salvation Army) and make a room divider type drape over and around the compressor, leaving one side open (partially open?) for air circulation/ventilation. Room dividers and workplace/work station (office setting) dividers work well for reducing sound/noise from adjacent areas or work stations. Sonny |
#12
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Breathable Noise Filter
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#14
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Breathable Noise Filter
wrote in message ...
The compressor is a Senco PC1010 which is pretty small, so I may be able to get away with rubber baffles and reasonably quiet fans to input and output air flow. Hmmm, guess I have some things to consider. A plywood box lined with Rockwool, or perhaps denim, batt insulation, held in place with wire cloth, that has indirect air intake and indirect air outlets would work well... The insulation absorbs sound and the plywood reflects it back into the insulation. My club built a large one to accommodate a 2 bag 1.5 HP unit so we can use it at our woodworking show. |
#15
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Breathable Noise Filter
John Grossbohlin wrote:
wrote in message ... The compressor is a Senco PC1010 which is pretty small, so I may be able to get away with rubber baffles and reasonably quiet fans to input and output air flow. Hmmm, guess I have some things to consider. A plywood box lined with Rockwool, or perhaps denim, batt insulation, held in place with wire cloth, that has indirect air intake and indirect air outlets would work well... The insulation absorbs sound and the plywood reflects it back into the insulation. My club built a large one to accommodate a 2 bag 1.5 HP unit so we can use it at our woodworking show. Sounds like you're talking about a dust collector and he's talking compressor. Two different types of sound. One way to get compressed air quieter is to change to a belt-driven compressor instead of a direct drive one. I've had both and the noise is much louder with a direct drive. -- GW Ross It is the journey that matters, in the end. |
#16
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Breathable Noise Filter
John Grossbohlin wrote:
wrote in message ... The compressor is a Senco PC1010 which is pretty small, so I may be able to get away with rubber baffles and reasonably quiet fans to input and output air flow. Hmmm, guess I have some things to consider. A plywood box lined with Rockwool, or perhaps denim, batt insulation, held in place with wire cloth, that has indirect air intake and indirect air outlets would work well... The insulation absorbs sound and the plywood reflects it back into the insulation. My club built a large one to accommodate a 2 bag 1.5 HP unit so we can use it at our woodworking show. Lots of varying suggestions here - and not all of them are really based on experience or knowledge. So - I'll step up and offer a suggestion that is not based on experience or knowledge either. But... it's worth you doing a google search on how these guys make quiet compressors these days. There's a ton of infomation out there on that. Even those nasty oiless compressors are very quiet today. DAGS Dave - there is a ton of information out there. It's not worth trying to post a few links - you'd be better spending an evening looking on your own. The manner in which these manufacturers achieve quiet today is a lot more simple than what's been put forward in this thread to date. -- -Mike- |
#17
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Breathable Noise Filter
On 7/30/2014 1:03 PM, Mike Marlow wrote:
But... it's worth you doing a google search on how these guys make quiet compressors these days. There's a ton of infomation out there on that. Even those nasty oiless compressors are very quiet today. Apparently the one Dave has, the Senco 1010?, is advertised as "ultra quiet", but that does not appear to be sufficient from his request. -- eWoodShop: www.eWoodShop.com Wood Shop: www.e-WoodShop.net https://www.google.com/+eWoodShop https://plus.google.com/+KarlCaillouet/posts http://www.custommade.com/by/ewoodshop/ KarlCaillouet@ (the obvious) |
#18
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Breathable Noise Filter
Swingman wrote:
On 7/30/2014 1:03 PM, Mike Marlow wrote: But... it's worth you doing a google search on how these guys make quiet compressors these days. There's a ton of infomation out there on that. Even those nasty oiless compressors are very quiet today. Apparently the one Dave has, the Senco 1010?, is advertised as "ultra quiet", but that does not appear to be sufficient from his request. Could well be - but then that may point to an level of quiet that Dave can't really achieve. Don't really know what he's looking for. -- -Mike- |
#19
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Breathable Noise Filter
"Mike Marlow" wrote: Could well be - but then that may point to an level of quiet that Dave can't really achieve. Don't really know what he's looking for. ----------------------------------------------------------- Pretty basic rules of appartment living. He wants to run his air compressor without it ****ing off the neighbors. Lew |
#20
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Breathable Noise Filter
"Lew Hodgett" wrote Pretty basic rules of appartment living. He wants to run his air compressor without it ****ing off the neighbors. If that is the case, transmitted vibration through the floors is the larger problem. In that case, setting the compressor on a piece of plywood on top of a couch cushion is definitely the way to go. Even better, instead of plywood, something with really high mass, like a piece of marble or granite countertop. -- Jim in NC --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#21
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Breathable Noise Filter
On 7/30/2014 2:47 PM, Lew Hodgett wrote:
"Mike Marlow" wrote: Could well be - but then that may point to an level of quiet that Dave can't really achieve. Don't really know what he's looking for. ----------------------------------------------------------- Pretty basic rules of appartment living. He wants to run his air compressor without it ****ing off the neighbors. Lew Like the other power tools are not going to be noisy? I have often wondered how that worked. Maybe his compressor is way noisier. |
#22
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Breathable Noise Filter
On Wed, 30 Jul 2014 13:34:31 -0500, Swingman wrote:
Apparently the one Dave has, the Senco 1010?, is advertised as "ultra quiet", but that does not appear to be sufficient from his request. Well, "quiet" in a usable workshop and "quiet" in an apartment are two different things. The Senco PC1010 *is* the quietest one I could find for use with a brad nailer. And by my saying that, it means there's not a great amount of noise to filter which suggests that a great amount of baffling probably isn't necessary either. For the time being I've been running the compressor for short periods of ten minutes at a time. But, it's getting tiresome, especially with the running time it takes to build up suitable pressure. I'd like to be able to run it for longer periods, so I'm trying to figure a way to do that and also do the responsible neighbour stuff. I may end up having to settle for just running it on several inches of foam rubber to curtail that vibration and leave it at that... Guess I'll have to play with it a bit. |
#23
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Breathable Noise Filter
On Wed, 30 Jul 2014 22:33:26 -0500, Leon lcb11211@swbelldotnet
Like the other power tools are not going to be noisy? I have often wondered how that worked. Maybe his compressor is way noisier. For short durations of noisy stuff, I use my balcony. For other longer durations of really noisy stuff, I go over to a friend's place. I sold my tablesaw really cheaply to him over ten years ago, advantage being that I get to go over and use it when needed. That's his backyard patio where I built the garden trestle table. It's a pain having to go all the way over there, but it's damned better than not having the option at all. |
#24
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Breathable Noise Filter
wrote in message ...
On Wed, 30 Jul 2014 22:33:26 -0500, Leon lcb11211@swbelldotnet Like the other power tools are not going to be noisy? I have often wondered how that worked. Maybe his compressor is way noisier. For short durations of noisy stuff, I use my balcony. For other longer durations of really noisy stuff, I go over to a friend's place. I sold my tablesaw really cheaply to him over ten years ago, advantage being that I get to go over and use it when needed. That's his backyard patio where I built the garden trestle table. It's a pain having to go all the way over there, but it's damned better than not having the option at all. This situation reminds me of a song Roger McGuinn wrote about his brother in law (my aunt's husband). "If it's free it cost too much." In the case of the BIL if he ever did anything for you or gave you something you ended up paying it back 10 times over fulfilling requests from the BIL. In this case, your friend got to provide space, electric, blades, and quiet over the course of 10 years for the privilege of a deal on the table saw. ;~) John |
#25
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Breathable Noise Filter
On 2014-07-30, Morgans wrote:
"Lew Hodgett" wrote Pretty basic rules of appartment living. He wants to run his air compressor without it ****ing off the neighbors. If that is the case, transmitted vibration through the floors is the larger problem. In that case, setting the compressor on a piece of plywood on top of a couch cushion is definitely the way to go. Even better, instead of plywood, something with really high mass, like a piece of marble or granite countertop. I've also seen people hang things from bungie cords to accomplish that. -- Grant Edwards grant.b.edwards Yow! Is it 1974? What's at for SUPPER? Can I spend gmail.com my COLLEGE FUND in one wild afternoon?? |
#26
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Breathable Noise Filter
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#27
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Breathable Noise Filter
On Thu, 31 Jul 2014 02:23:53 -0400, wrote:
On Wed, 30 Jul 2014 13:34:31 -0500, Swingman wrote: Apparently the one Dave has, the Senco 1010?, is advertised as "ultra quiet", but that does not appear to be sufficient from his request. Well, "quiet" in a usable workshop and "quiet" in an apartment are two different things. The Senco PC1010 *is* the quietest one I could find for use with a brad nailer. And by my saying that, it means there's not a great amount of noise to filter which suggests that a great amount of baffling probably isn't necessary either. For the time being I've been running the compressor for short periods of ten minutes at a time. But, it's getting tiresome, especially with the running time it takes to build up suitable pressure. I'd like to be able to run it for longer periods, so I'm trying to figure a way to do that and also do the responsible neighbour stuff. I may end up having to settle for just running it on several inches of foam rubber to curtail that vibration and leave it at that... Guess I'll have to play with it a bit. Not a direct answer to your question Dave, but have you considered CO2 bottles? www.powertank.com basilisk |
#28
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Breathable Noise Filter
On Thu, 31 Jul 2014 10:13:34 -0500, basilisk
Not a direct answer to your question Dave, but have you considered CO2 bottles? I am aware of them, just didn't give them much thought to be honest. |
#29
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Breathable Noise Filter
On Tuesday, July 29, 2014 6:58:06 PM UTC-7, Morgans wrote:
wrote in message ... I'm building a box to hold a small compress[or] other ideas such as baffles will also not allow enough fresh air in to keep things cool. Look up how many BTU's are produced per amp/volt of electricity, then multiply that by how many amps your compressor is. Nearly all of that electrical energy is turned into heat. That's too optimistic: MORE heat is liberated than the electric power, because compression changes the heat capacity of the air. and the air temperature rises. When you release the gas, it gets cooler than ambient (this is a kind of open-end refrigeration cycle). That's why the compressor cylinder always has heatsink fins. |
#30
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Breathable Noise Filter
On 2014-07-31, whit3rd wrote:
On Tuesday, July 29, 2014 6:58:06 PM UTC-7, Morgans wrote: ... I'm building a box to hold a small compress[or] other ideas such as baffles will also not allow enough fresh air in to keep things cool. Look up how many BTU's are produced per amp/volt of electricity, then multiply that by how many amps your compressor is. In theory you'll have to take the power factor into account, since you want to know real Watts (vs. the imaginary component that's included in the Volt Amps value). Nearly all of that electrical energy is turned into heat. That's too optimistic: MORE heat is liberated than the electric power, because compression changes the heat capacity of the air. and the air temperature rises. When you release the gas, it gets cooler than ambient (this is a kind of open-end refrigeration cycle). Yup. Assuming the air expands outside the enclosure, in addition to dissapating the electrical power, you're also pumping heat from outside the enclosure to inside the enclosure. -- Grant Edwards grant.b.edwards Yow! We just joined the at civil hair patrol! gmail.com |
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