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moods.exe
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Is this blower fan suitable for a laminar flow hood build?
#27090576 - 12/15/20 01:48 PM (3 years, 1 month ago) |
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Is this blower suitable for a 2x4 ft laminar flow hood build? Please keep all your answers with respected to the blower fan shown here.
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RoscoeReturns
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: moods.exe]
#27090696 - 12/15/20 02:58 PM (3 years, 1 month ago) |
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Not enough info. How big is it? What motor drives it? Airflow vs pressure curves? What filter?
Anyway, those centrifugal fans are seen if FFU units, but IMO are not ideal for flow hood builds.
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bodhisatta 
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: moods.exe]
#27090713 - 12/15/20 03:04 PM (3 years, 1 month ago) |
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Quote:
moods.exe said:

Is this blower suitable for a 2x4 ft laminar flow hood build? Please keep all your answers with respected to the blower fan shown here.
How would anyone know what blower that is from just a picture.
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sandman420
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: bodhisatta]
#27090810 - 12/15/20 04:16 PM (3 years, 1 month ago) |
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First of all that is a replacement blower wheel not a blower.
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moods.exe
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: sandman420]
#27091402 - 12/15/20 11:45 PM (3 years, 1 month ago) |
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so these are the specification of the fan. I need it to build a 2x4 ft flow hood.It will gather static pressure from hepa(2x4 ft) and prefilter (1.5x1.5 ft).The specs seem to be good enough. I only need to know if this type of Blower is a viable option for building a flow hood.
Edited by moods.exe (12/15/20 11:51 PM)
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sandman420
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: moods.exe]
#27091414 - 12/15/20 11:57 PM (3 years, 1 month ago) |
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No, look for a different blower. You want a squirrel cage type blower such as a 1tdt8.
But you need to know your filter sepcs before you try to match a blower anyway. And filter specs are not just the size...Flow data is what you need.
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moods.exe
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: sandman420]
#27091468 - 12/16/20 01:04 AM (3 years, 1 month ago) |
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That model is not available in india for purchase.I will look for an equivalent model, but could you tell me why this blower wouldnt work? the graph on the product catalog says it does 470 cfm @ 1.5 static pressure.
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sandman420
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: moods.exe]
#27091472 - 12/16/20 01:12 AM (3 years, 1 month ago) |
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Because it's just a wheel there is no shroud or body to direct the air I am quite certain this is just part of a blower not a complete fan. How is a spinning wheel with no shroud going to blow air in a flowhood? The original picture you showed didn't even have the motor man.
It doesnt matter if the 1tdt8 model is available in india, you can see what it looks like now look for fans that look like that.
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sandman420
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: sandman420]
#27091479 - 12/16/20 01:17 AM (3 years, 1 month ago) |
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If I lived in India I'd be looking for manufacturers of actual laminar flow hoods and get a real complete one for cheap.
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moods.exe
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: sandman420]
#27091489 - 12/16/20 01:44 AM (3 years, 1 month ago) |
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It is a backward curved impeller type blower. Its works like the fan inside your PC, by spinning. yes it is a complete fan.
Edited by moods.exe (12/16/20 02:38 AM)
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moods.exe
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: sandman420]
#27091492 - 12/16/20 01:47 AM (3 years, 1 month ago) |
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although there are a too many manufacturers of "laminar air flows" in india, I would be saving a lot of money by building one.
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bodhisatta 
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: sandman420]
#27091564 - 12/16/20 04:49 AM (3 years, 1 month ago) |
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Quote:
sandman420 said: Because it's just a wheel there is no shroud or body to direct the air I am quite certain this is just part of a blower not a complete fan. How is a spinning wheel with no shroud going to blow air in a flowhood? The original picture you showed didn't even have the motor man.
It doesnt matter if the 1tdt8 model is available in india, you can see what it looks like now look for fans that look like that.
Its obviously a complete fan considering the graph. The picture is just of the cool inside parts.
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moods.exe
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: bodhisatta]
#27095107 - 12/17/20 11:06 PM (3 years, 1 month ago) |
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So Bodhisatta , should I start looking at other fan types? like the one shown in DIY videos?
I had another query, what will be the combined static pressure for 2x4ft deep pleated HEPA + 1.5x1.5 ft prefilter?
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bodhisatta 
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: moods.exe]
#27095265 - 12/18/20 04:28 AM (3 years, 1 month ago) |
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Depends on the filter you have to find that out
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PBJ710
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: bodhisatta]
#27095447 - 12/18/20 08:24 AM (3 years, 1 month ago) |
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You must post the filter curve of the EXACT filter for anyone here to be able to help you select a fan. Only once the filter specs are known can anyone provide any useful information about finding the appropriate fan. Similar sized filters can have drastically different ratings, so 'finding an equivalent model' will likely lead to you spending alot more money on components that will not work correctly instead of just buying a properly built one to start with. Buying a random filter because it's the 'right' physical dimensions can be very short sighted - especially if the filter curve is not available.
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moods.exe
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: PBJ710]
#27097012 - 12/19/20 03:12 AM (3 years, 1 month ago) |
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I just got to know that the HEPA contributes 10-15 units. Plus the prefilter adds 3-5 units . As shown in multiple youtube videos, the total drop in pressure is 15-20 units. I think i can make out the calculation on my own now. I would just like to know whether the blower type is right or wrong. Ive found only 2-3 images on google which show flow hoods built with this type of blower.
Edited by moods.exe (12/19/20 03:13 AM)
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moods.exe
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Re: Is this blower fan suitable for a laminar flow hood build? [Re: moods.exe]
#27097921 - 12/19/20 02:59 PM (3 years, 1 month ago) |
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Well the calculations aside , this type of blower is apparently what’s used in commercial LAFs  And yes I’ve asked the engineer of the seller company about the pressure drops , as mentioned above ^
Edited by moods.exe (12/19/20 03:05 PM)
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