Topic: Mining Room Intake Filters (Read 442 times)

Quote from: mark421421 on May 10, 2018, 01:53:22 AM

Another question for you ... The stuff that is labeled "pre-filter" isn't washable, is that correct? I'm finding different companies that sell activated carbon filter rolls, but they all say "pre-filter" and none say they are washable.

pre-filter label doesn't define if they are washable or no as far as I know, activated carbon foam is washable, those white filters aren't, you can even feel the fabric in your hands. Carbon foam is like kitchen sponge and white pre-filter is like wool fabric, if you wash it it will fall apart

I have a small rig with 24 Asic miners all ducting straight out. I have 8 6" vents to pull air in. At the minute I only have fly screens to filter the air in.

Would I be able to use something like this on the intake

https://www.ebay.co.uk/i/131848661543?chn=ps&adgroupid=43920634520&rlsatarget=pla-359427365517&abcId=1063846&adtype=pla&merchantid=114953937&poi=&googleloc=1006959&device=c&campaignid=797602469&crdt=0

Thanks

you can use those, they are washable and can last long, but keep in mind that they are for large particles, in fact they are great for ASICs at least for my environment.
Also very important to keep an eye on pressure, you should balance intake and outtake of air with filters, you should get positive airflow.

So I tried some of those activated carbon filters on my intake fan over the past few days. I'm still getting dust/dirt build up on surfaces. I have a coupe of tables in that room that I cleaned on the day that I installed the filter. Now this makes better sense, if you're saying they are for large particles. The window I use for intake has a screen in it, so it's stopping large particles, but I'm guessing activated carbon stops large smaller particles than what you are talking about.

Another note ... I ran that intake ran unfiltered in the winter and didn't bring in the dust/dirt, that I'm talking about.

And another note ... Unfiltered, that intake fan pulls in air that you can feel with force while stand in front of it, without the exhaust fan running. Filtered with activated carbon, you can't feel any air coming in, if the exhaust fan is turned off. Only when the exhaust is turned on, you can feel the air coming in.

This leads to my next question ... Are intake fans really necessary, if you have proper exhaust? Seems like intake holes with filters should be good enough, because the exhaust fans are doing the work for the intake.

I don't use any intake fans, just a passive intake, like you said, exhaust fan sucks and naturally pulls air from the intake, just need to make sure your intake is clean and ideally not coming from anywhere near your exhaust. I might convert my passive intake into a chicken coop like crazydane did. Grin

But it looks like hes probably running a shitload more machines than I am, so there is a slight benefit with an intake fan, especially at night if you can pull some cooler air in faster.

You may consider these dangers when placing those intake fans

https://bitcointalksearch.org/topic/m.36569933

just observe the rigs, if passive intake is barely enough, I'd better stay at it.

ltcsprite

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Activity: 269

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Quote from: gotminer on May 14, 2018, 07:51:14 PM

Quote from: mettalmag on May 10, 2018, 07:24:27 AM

Quote from: mark421421 on May 10, 2018, 01:53:22 AM

Another question for you ... The stuff that is labeled "pre-filter" isn't washable, is that correct? I'm finding different companies that sell activated carbon filter rolls, but they all say "pre-filter" and none say they are washable.

pre-filter label doesn't define if they are washable or no as far as I know, activated carbon foam is washable, those white filters aren't, you can even feel the fabric in your hands. Carbon foam is like kitchen sponge and white pre-filter is like wool fabric, if you wash it it will fall apart

I have a small rig with 24 Asic miners all ducting straight out. I have 8 6" vents to pull air in. At the minute I only have fly screens to filter the air in.

Would I be able to use something like this on the intake

https://www.ebay.co.uk/i/131848661543?chn=ps&adgroupid=43920634520&rlsatarget=pla-359427365517&abcId=1063846&adtype=pla&merchantid=114953937&poi=&googleloc=1006959&device=c&campaignid=797602469&crdt=0

Thanks

you can use those, they are washable and can last long, but keep in mind that they are for large particles, in fact they are great for ASICs at least for my environment.
Also very important to keep an eye on pressure, you should balance intake and outtake of air with filters, you should get positive airflow.

So I tried some of those activated carbon filters on my intake fan over the past few days. I'm still getting dust/dirt build up on surfaces. I have a coupe of tables in that room that I cleaned on the day that I installed the filter. Now this makes better sense, if you're saying they are for large particles. The window I use for intake has a screen in it, so it's stopping large particles, but I'm guessing activated carbon stops large smaller particles than what you are talking about.

Another note ... I ran that intake ran unfiltered in the winter and didn't bring in the dust/dirt, that I'm talking about.

And another note ... Unfiltered, that intake fan pulls in air that you can feel with force while stand in front of it, without the exhaust fan running. Filtered with activated carbon, you can't feel any air coming in, if the exhaust fan is turned off. Only when the exhaust is turned on, you can feel the air coming in.

This leads to my next question ... Are intake fans really necessary, if you have proper exhaust? Seems like intake holes with filters should be good enough, because the exhaust fans are doing the work for the intake.

I don't use any intake fans, just a passive intake, like you said, exhaust fan sucks and naturally pulls air from the intake, just need to make sure your intake is clean and ideally not coming from anywhere near your exhaust. I might convert my passive intake into a chicken coop like crazydane did. Grin

But it looks like hes probably running a shitload more machines than I am, so there is a slight benefit with an intake fan, especially at night if you can pull some cooler air in faster.

ltcsprite

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Activity: 269

Merit: 101

Quote from: crazydane on May 14, 2018, 08:13:19 PM

I run 10 of these 24x24 washable filters:

https://www.amazon.com/gp/product/B00N6RHFKM/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

I build this extension to house them:

That's a 10,000 CFM intake fan and there is also another 10k exhaust fan.

That's a great idea, why didn't I think of that! Cool

crazydane

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I run 10 of these 24x24 washable filters:

https://www.amazon.com/gp/product/B00N6RHFKM/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

I build this extension to house them:

That's a 10,000 CFM intake fan and there is also another 10k exhaust fan.

gotminer

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Activity: 644

Merit: 24

Quote from: mettalmag on May 10, 2018, 07:24:27 AM

Quote from: mark421421 on May 10, 2018, 01:53:22 AM

Another question for you ... The stuff that is labeled "pre-filter" isn't washable, is that correct? I'm finding different companies that sell activated carbon filter rolls, but they all say "pre-filter" and none say they are washable.

pre-filter label doesn't define if they are washable or no as far as I know, activated carbon foam is washable, those white filters aren't, you can even feel the fabric in your hands. Carbon foam is like kitchen sponge and white pre-filter is like wool fabric, if you wash it it will fall apart

I have a small rig with 24 Asic miners all ducting straight out. I have 8 6" vents to pull air in. At the minute I only have fly screens to filter the air in.

Would I be able to use something like this on the intake

https://www.ebay.co.uk/i/131848661543?chn=ps&adgroupid=43920634520&rlsatarget=pla-359427365517&abcId=1063846&adtype=pla&merchantid=114953937&poi=&googleloc=1006959&device=c&campaignid=797602469&crdt=0

Thanks

you can use those, they are washable and can last long, but keep in mind that they are for large particles, in fact they are great for ASICs at least for my environment.
Also very important to keep an eye on pressure, you should balance intake and outtake of air with filters, you should get positive airflow.

So I tried some of those activated carbon filters on my intake fan over the past few days. I'm still getting dust/dirt build up on surfaces. I have a coupe of tables in that room that I cleaned on the day that I installed the filter. Now this makes better sense, if you're saying they are for large particles. The window I use for intake has a screen in it, so it's stopping large particles, but I'm guessing activated carbon stops large smaller particles than what you are talking about.

Another note ... I ran that intake ran unfiltered in the winter and didn't bring in the dust/dirt, that I'm talking about.

And another note ... Unfiltered, that intake fan pulls in air that you can feel with force while stand in front of it, without the exhaust fan running. Filtered with activated carbon, you can't feel any air coming in, if the exhaust fan is turned off. Only when the exhaust is turned on, you can feel the air coming in.

This leads to my next question ... Are intake fans really necessary, if you have proper exhaust? Seems like intake holes with filters should be good enough, because the exhaust fans are doing the work for the intake.

gotminer

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Activity: 644

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Quote from: mark421421 on May 11, 2018, 12:03:29 AM

you can use those, they are washable and can last long, but keep in mind that they are for large particles, in fact they are great for ASICs at least for my environment.
Also very important to keep an eye on pressure, you should balance intake and outtake of air with filters, you should get positive airflow.

How would I test this?

[/quote]

From what I've been reading, the tool you use to measure it is called a manometer.

mark421421

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Activity: 44

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you can use those, they are washable and can last long, but keep in mind that they are for large particles, in fact they are great for ASICs at least for my environment.
Also very important to keep an eye on pressure, you should balance intake and outtake of air with filters, you should get positive airflow.

[/quote]

Hi Thanks for the reply,

What are the effects of Negative pressure in a room?

How would I test this?

DataMike

newbie

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MERV-11 filters are meant to be used for electronic equipment / server rooms. Try your search there.

MERV chart: https://um874equv4cl05m3i4xwrb93-wpengine.netdna-ssl.com/wp-content/uploads/2017/05/merv_rating_meaning.png

mettalmag

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Quote from: mark421421 on May 10, 2018, 01:53:22 AM

Another question for you ... The stuff that is labeled "pre-filter" isn't washable, is that correct? I'm finding different companies that sell activated carbon filter rolls, but they all say "pre-filter" and none say they are washable.

pre-filter label doesn't define if they are washable or no as far as I know, activated carbon foam is washable, those white filters aren't, you can even feel the fabric in your hands. Carbon foam is like kitchen sponge and white pre-filter is like wool fabric, if you wash it it will fall apart

I have a small rig with 24 Asic miners all ducting straight out. I have 8 6" vents to pull air in. At the minute I only have fly screens to filter the air in.

Would I be able to use something like this on the intake

https://www.ebay.co.uk/i/131848661543?chn=ps&adgroupid=43920634520&rlsatarget=pla-359427365517&abcId=1063846&adtype=pla&merchantid=114953937&poi=&googleloc=1006959&device=c&campaignid=797602469&crdt=0

Thanks

you can use those, they are washable and can last long, but keep in mind that they are for large particles, in fact they are great for ASICs at least for my environment.
Also very important to keep an eye on pressure, you should balance intake and outtake of air with filters, you should get positive airflow.

mark421421

jr. member

Activity: 44

Merit: 10

I have a small rig with 24 Asic miners all ducting straight out. I have 8 6" vents to pull air in. At the minute I only have fly screens to filter the air in.

Would I be able to use something like this on the intake

https://www.ebay.co.uk/i/131848661543?chn=ps&adgroupid=43920634520&rlsatarget=pla-359427365517&abcId=1063846&adtype=pla&merchantid=114953937&poi=&googleloc=1006959&device=c&campaignid=797602469&crdt=0

Thanks

gotminer

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Activity: 644

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Another question for you ... The stuff that is labeled "pre-filter" isn't washable, is that correct? I'm finding different companies that sell activated carbon filter rolls, but they all say "pre-filter" and none say they are washable.

mettalmag

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Quote from: gotminer on May 09, 2018, 02:45:54 PM

Quote from: mettalmag on May 09, 2018, 02:29:11 PM

Quote from: gotminer on May 09, 2018, 02:17:47 PM

Quote from: mettalmag on May 09, 2018, 02:29:11 PM

Anyone have suggestions on filter types for intake? I'm pulling in air from the outside and I it's pulling in a lot of dust/dirt/ect. I know I've seen someone talk about what types to use and what not to use, but I can't find the old post I read it in.

depends on what kind of dust are you trying to avoid, all of them obvious.
My configs are one time use filters plus activated carbon foam 5mm filters which you can wash and reinstall. In fact you can use only activated carbon foam and choose thickness depending on your needs.
Also you have to consider aperture (PPI) to avoid positive or negative pressure in mining room

Something like this? ...

https://www.amazon.com/Resinta-Activated-Purifier-Replacement-Pre-Filter/dp/B075CGH938/ref=cm_wl_huc_item

yes but I'd suggest you to find some sellers on alibaba or
here is the company I'm dealing with http://www.bktech.com.cn/english/

this is a pre filter for small particles of dust, the bad thing about this is that once it's full you have to throw it away http://www.bktech.com.cn/english/product.php?id=91#VIEW
this is the second washable filter http://www.bktech.com.cn/english/product.php?id=109#VIEW (I use only this)

Awesome! Thanks so much for your help. Why do you suggest Alibaba? Won't shipping take way longer? I'm in the United States.

happy to help,
I'm on the other side of the planet plus I have agent in China so it's easier for me to order directly from there

gotminer

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Quote from: gotminer on May 09, 2018, 02:17:47 PM

Quote from: gotminer on May 09, 2018, 02:17:47 PM

Anyone have suggestions on filter types for intake? I'm pulling in air from the outside and I it's pulling in a lot of dust/dirt/ect. I know I've seen someone talk about what types to use and what not to use, but I can't find the old post I read it in.

depends on what kind of dust are you trying to avoid, all of them obvious.
My configs are one time use filters plus activated carbon foam 5mm filters which you can wash and reinstall. In fact you can use only activated carbon foam and choose thickness depending on your needs.
Also you have to consider aperture (PPI) to avoid positive or negative pressure in mining room

Something like this? ...

https://www.amazon.com/Resinta-Activated-Purifier-Replacement-Pre-Filter/dp/B075CGH938/ref=cm_wl_huc_item

yes but I'd suggest you to find some sellers on alibaba or
here is the company I'm dealing with http://www.bktech.com.cn/english/

this is a pre filter for small particles of dust, the bad thing about this is that once it's full you have to throw it away http://www.bktech.com.cn/english/product.php?id=91#VIEW
this is the second washable filter http://www.bktech.com.cn/english/product.php?id=109#VIEW (I use only this)

Awesome! Thanks so much for your help. Why do you suggest Alibaba? Won't shipping take way longer? I'm in the United States.

mettalmag

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Anyone have suggestions on filter types for intake? I'm pulling in air from the outside and I it's pulling in a lot of dust/dirt/ect. I know I've seen someone talk about what types to use and what not to use, but I can't find the old post I read it in.

depends on what kind of dust are you trying to avoid, all of them obvious.
My configs are one time use filters plus activated carbon foam 5mm filters which you can wash and reinstall. In fact you can use only activated carbon foam and choose thickness depending on your needs.
Also you have to consider aperture (PPI) to avoid positive or negative pressure in mining room

Something like this? ...

https://www.amazon.com/Resinta-Activated-Purifier-Replacement-Pre-Filter/dp/B075CGH938/ref=cm_wl_huc_item

yes but I'd suggest you to find some sellers on alibaba or
here is the company I'm dealing with http://www.bktech.com.cn/english/

this is a pre filter for small particles of dust, the bad thing about this is that once it's full you have to throw it away http://www.bktech.com.cn/english/product.php?id=91#VIEW
this is the second washable filter http://www.bktech.com.cn/english/product.php?id=109#VIEW (I use only this)

gotminer

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Quote from: ivakar on May 09, 2018, 01:10:24 PM

Anyone have suggestions on filter types for intake? I'm pulling in air from the outside and I it's pulling in a lot of dust/dirt/ect. I know I've seen someone talk about what types to use and what not to use, but I can't find the old post I read it in.

depends on what kind of dust are you trying to avoid, all of them obvious.
My configs are one time use filters plus activated carbon foam 5mm filters which you can wash and reinstall. In fact you can use only activated carbon foam and choose thickness depending on your needs.
Also you have to consider aperture (PPI) to avoid positive or negative pressure in mining room

Something like this? ...

https://www.amazon.com/Resinta-Activated-Purifier-Replacement-Pre-Filter/dp/B075CGH938/ref=cm_wl_huc_item

If I only use activated carbon foam, would the 10-12mm be sufficient?

mettalmag

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i though about it too, cause the dust is hurting my farms as well, and have no really good findins and clues how to solve this.. i think the only one good method is to use aircondition with a filters.. but if there would be more ideas here i will definetly try them

you can use air conditioning but it will take 1/3 of whole farms electricity to cool the room so it's not efficient.
even though most of my farms are located in town were outside temps in summer can reach 35C I still manage to work with only managed airflow and in fact different solutions in different farms.
Filters are mandatory and also as I mentioned it is important to keep an eye on pressure in the room which you can manage with air vents and those are not as energy hungry as air conditioners.
It all can be calculated

ivakar

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i though about it too, cause the dust is hurting my farms as well, and have no really good findins and clues how to solve this.. i think the only one good method is to use aircondition with a filters.. but if there would be more ideas here i will definetly try them

mettalmag

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Activity: 1084

Merit: 1003

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