How to build a cheap DIY Laminar Flow Hood | Choose Filter and Fan
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- Опубліковано 21 жов 2024
- How to build a cheap DIY Laminar Flow Hood | Choose correct Filter Size and Fan Power. Before we finally build everything together we need to talk about the parameters to guarantee a sterile air flow at the end to grow mushrooms successfully.
Part 2: • How to build a cheap D...
Gear I used to build my Laminar Flow Hood:
Fan 680W: amzn.to/3oECQSW
HEPA 14 Filter: bit.ly/3uKSmNU
Music:
Track: Deep and Abstract [Vlog Music] by MOKKA / Magic Wand • (No Copyright Music) D...
Music provided by "MokkaMusic" channel and inaudio.org
Explains it much better than anyone else because he actually knows what he’s talking about
Thanks mate"!
I have one of those from a bounce house that got torn imma try to make one like yours
Good Video looking for Part 2
Thank you Mate
M2
M2
Out now
Looks promising. Nice tl again
Thank you
Just ordered the hepa setup from Germany hopefully they ship to us🙏
Damn they want 100 to ship to us but don’t see any cheaper in us so might be worrhnit
How you order was? And where you ordered from?
Already made the same order but still waiting to pay the additional shipping fees ..
Excellent content. Thanks for putting this out there.
Thank you:)
great video.
the timelapses alone are awesome.
PS: are you german?
Thank you:) yes I am German
I really need to build one. My contam rate is discouragingly high.
You rock man!
thank you
In Example 2 towards the end, v* = 1800 m/h * 0.72 right? and not 1800 m/h / 0.72?
Yes, you are right 👍
The flame from the lighter should be steady or you have turbulent air flow which is not what we require. The flow of air should barely be felt.
It is very informative video, thanks🙂
Thank you great you liked it😀
Nice Video Thanks for sharing
Thank you
Awesome! Quick question: i found a 1500CFM and 1000CFM fan like you have. I will buy a 47.5'' X 23.5'' HEPA filter 99.99%. Will the 1000CFM be strong enough, will the 1500CFM be too strong, and will I maybe need to create a cone setup to produce an efficient vortex or will it work just fine like your setup (on top)?
Quick optional setup: build a room, can be cheaply made with plastic rolls, to have an enclosed room where the flow hood will purify your air overtime. Giving you even less chance for contamination. Wear paint suit and gas mask.
Thanks for the explanation! Really nicely made. Just a question. There are computer fan with more than 300 m3/h. Do you think I can use those if I couple 6 of them for a 30x 60 cm2 box? I’m consider these fans as they have a smaller footprint and are also less noisy.
Hey, that will not work, as your fan need a lot of pressure to pull air through the filter. As the filter width is at least 7 cm its like blowing air trough a pillow. The only option here is to use a radial fan
I think they did it at least if you take a look at the fan at about 8min of the video. Doesn't necessarily mean it works though I guess :D ua-cam.com/video/tZ-Qe1A2D3w/v-deo.html
Thanks for the explanation, I would like to get the filter with the following specs.
HEPA Filter/ Schwebstofffilter - Güteklasse H14 - 610 x 610 x 78mm - MDF Rahmen
Nenngröße: 610 x 610 x 78 mm
Filterklasse: H14 HEPA Filter nach EN 1822
Abscheidegrad nach EN 1822: >99,995%
Nennvolumenstrom: 700 m³/h
Anfangs-Druckdifferenz: 150 Pa
Empf. End-Druckdifferenz: 600 Pa
Rahmenart: MDF Rahmen
Dichtung: Optional wählbar
In your calculation/example you used 250 PA, can I use 150PA with this filter as stated above or do I have to use the 250PA here too?
Looking forward to your answer!
What fan do you want to use?
Did you have any issues ordering from as-luftfilter? I was thinking of ordering there but I read some bad reviews.
Hey mate I'm trying to calculate the m3/h for my filter. 61x61cm 8cm deep. Using your example calculations I'm getting 4838m3/h and I'm not sure that's right. Have I missed something or is this correct
Hey, I'm a year late to this but someone said that his example should have been V* = 1800 m/h * 0.72
Thank you
Ich bin mir nicht ganz sicher, aber ich glaube bei Minute 4:40 in der zweiten Rechnung hast du dich vertan. Da hast du die benötigte m3/s durch die Fläche des Filters geteilt. Dabei würde allerdings herauskommen, dass je größer der Filter ist, die Menge an Luft die zu pumpen ist geringer sein müsste. Ich glaube, dass man dort statt zu teilen man multiplizieren muss. Dann würde man nicht auf 2500 m3/s kommen sondern auf ca. 1350 m3/s kommen. Vielleicht liege ich ja auch falsch.
Oh verdammt, du hast Recht!!! Kleinere Fläche wengier Volumenstrom notwendig
If I’m buying a fan that has 1700 rated airflow with a 250 inital resistance what kind of fan would I need?
can you share link?
Hey Jens! Thanks a lot for the video! - i was initialy planing on using the same filter, however i could not figure out how to calculate the reynolds number, to figure out if the thickness of the filter is sufficient or if i should take the 150 mm version. Have you calculated the reynolds number for your flow hood?
Hey Carlos,
Do you want to calculate if the flow is laminar or turbulent? I have never thought about that (just calculated the setup to achieve proper air flow speed) ;) With the known pressure drop value of the filter and the flow rate information of the fan you can calculate the resulting flow speed which should be around 0,4-0,7m/s.
@@HappyMushrooms yes, as explained in this video by "oneEarth Mushrooms" ua-cam.com/video/4TVvStn096s/v-deo.html .
I calculated, for the 57cm x 57 cm filter (150 pa - 7 cm) i would need at least 603 m3/h to achieve laminar flow - however this does not take into consideration the reynolds number and the thickness of the filter.
@@HappyMushrooms as i have understood, flow speed does not make the flow laminar. It could be also a steady flow (like from the water tab) of filtered air moving with 0,4-0,7 m/s. Thats why it would be interesting to try to figure out the needed filtersize according to the reynolds number.
Hey, I got your point. As prof. HEPA fitler with a depth are designed for this kind of application, I would suggest to use one with a thickness of at least 8 cm (Pressure drop 150 Pa // Thickness:29cm = 380Pa). If fan is able to still deliver around 0,5m/s the setup should be fine. The danger of 100% turbulent outcome only appears with thinner HEPA Filter or extreme air flow speeds (in my understanding). But you are right... a computable Re would be a save addition before buying the needed gear. But it seems as if the needed parameters are not accessible from fan/filters`?
@@HappyMushrooms yes - its actually quite tricky to calculate it .. in the end, as i went for a pobra 180-70 fan, with 1950 h3 h, i got the 61x61cm -> 150 mm filter with 250 pa. Hopefully its not too loud, when not used at fullpower.
What do you think is the minimum depth / "tiefe" of the box, do you think 40 cm is enough for a 15 cm filter?
Thanks for all the Help and the nice videos, by the way!
Can i use hair dryer.... As a fan
I am not sure, but I think a hair dryer will be WAY to weak when using a thick filter
Hi Jens
I am about to order a HEBA 14 filter via the link in your description
I am not shure witch filter to order: Staubluftseite ore Reinluftseite. My German is not that good :o)
Best and thanks /Henrik
Hey Hendrik. When using the filter like I did in the video, the sealing should be "Reinluftseite" (where clean air goes out). Staubluft is the side where the dirty air is sucked in. Then the dealing is pressing against the wooden frame.
@@HappyMushrooms Thangs a lot!! I will order now.. And Great videos.. Keep up the good work, Jens
How you order was? And how much have you paid for the shipping?
Already made the same order from the same website but still waiting for shipping fees
Hi man, first of all thanks for sharing your knowledge but i have a question: do you know if the website you bought the filter from ships to italy?
Hey thank you:) I have ordered the filter here: www.as-luftfilter.de/Schwebstofffilter-E10-H14/HEPA-Filter--Schwebstofffilter-H14/ They send to italy, but you need to contact them via mail. Online standard shipping is only to germany
@@HappyMushrooms thank you very much :)
You are welcome:)
Amico mio,ho comprato lo stesso identico setup...ti posso chiedere come è andata alla fine?
E di che dimensioni bisogna fare la box intorno di legno?
Ho visto che mette un piccolo dislivello nella parte posteriore,è indispensabile?
Hey Guys, did already somone build Laminar that Jens suggest? Does it work?
Great Video! :) and thanks for providing the links for the Hepa Filter. Which one of the filters did you choose? Stabluftseite, Reinluftseite or Keine?
Thanks mate! "Reinluftseite (Clean-air-side)" ist the side where the clean air is coming out. This should be mounted against the frame from inside.
@@HappyMushrooms Thanks man! I will order it! :) what do you think about this fan? Should be more than enough right?
If you have better ideas please let me know! :) Thanks Jens! looking forward to Part 2!
www.amazon.de/neverest-RV-B-160-Rohrventilator-Abluftventilator/dp/B07YG2BZ7L/ref=sr_1_1?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=neverest%2BRV-B%2B160%2Bmm&qid=1634047900&qsid=262-9249574-8064603&sr=8-1&sres=B07YG2BZ7L%2CB01EFPZHOO%2CB005JRZPMM%2CB08MTGVFT4%2CB07NRN55CH%2CB00832FPS4%2CB08DRJSBDL%2CB07BK2QF5F%2CB07KW6B1FV%2CB07NVQ7SFR%2CB009UG4YBQ%2CB08P4ZK5YZ%2CB007WTSQ3A%2CB00EQ1RG42%2CB075D9R8PZ%2CB00DW75DWS&th=1
900 m³/h looks good as only about 300 m3/h is requires for H14 60cm x 30cm. BUT, they curve is missing so there is no information about pressure drop:/ I am a littel concerned as my fan does 850m3/h but got 680W (the fan you linked just runs with 155W and "shall" deliver 900m3/h)
I would not recommend this one, just checked it again, it is a tube fan which does not produce enough pressure. The radial fans should be the better option here (or a tube fan which shows the diagram to get sure that it got enough pressure). The fan you linked shows 350Pa which a pressure drop of about 230-270Pa there wont be anough pressure to blow air trough the filter
@@HappyMushrooms Can you please recommend me a fan that works (maybe not as big as yours) :), I have searched everywhere and the information is so confusing :/ I would really appreciate your help
Hey there. I’m struggling with finding the right blower for the right price. My filter is the same size. I’ve noticed you’ve linked 2 different blowers. Why? Thanks I’m advance.
Hey, I am using the 680W version. I have removed the other, stronger one in the description as this might be confusing. The 900W version could be a "cheap" solution when using a bigger filter.
Hey Jens I have an idea for a Laminar Flow Setup, would these work for a 30x60 Box ?
Pump:
370W Gebläse, Elektrische Luftgebläse Hochdruckgebläse Luftpumpe Pumpen Radialventilator Hochdruckgebläse, für Aufblasbare Spielzeuge Luftmatratze Hüpfburg
Filter:
HEPA Filter/ Schwebstofffilter - Güteklasse H14 - 305 x 610 x 78mm - MDF Rahmen
Moin, das müsste exakt mein Setup sein, außer dass du ein 370W und ich ein 680W Gebläse hast. Da der Hersteller leider keine Daten/Diagrame online zu dem Gebläse hat: Ja könnte sehr gut funktionieren, ganz sicher weiß man das aber leider nicht. Zur Sicherheit würde ich vll. lieber das 450W Modell nehmen
Hey, hab gerade mal recherchiert, reichen die 78 mm Filtertiefe aus? Habe bei anderen Quellen gelesen, dass man mindestens 5inches (=12,5 cm) braucht.
Hey, puh... was ist denn da für ein Grund bei der Quelle angegeben? Meiner funktioniert eig ganz gut und da dieser auch einen ordentlich Druckabfall aufweist denke ich dieser tut was er soll. Klar dicker ist immer besser, aber ob das jetzt den großen Unterschied macht?
@@HappyMushrooms Wie ist denn die Kontaminationsrate? Wenns funktioniert funktionierts, ist ja dann auch egal wie die Werte sind. Will mir eben auch so ein Teil zusammenbasteln und will natürlich dann auch, dass es gut funktioniert :D
Der Druckabfall sind ja 150 pa, oder? (damit wir vom gleichen Filter reden). Vielen Dank übrigens fürs Antworten!!!
Bei Shiitake, Löwenmähe und pinken Austern habe ich in den letzten 3 Monaten keine einzige Konti gehabt. Bei Kräuterseitlingen leider schon... denke die habe ich mir aber schon vorher irgendwie in der Petri oder beim ersten Übersetzen in Roggen eingefangen. Von daher denke ich dass die Anlage sehr gut funktioniert. Im nachhinein würde ich aber auf jedenfall einen doppelt so großen Filter nehmen, das erleichtert einfach die Arbeit;) und das Gebläse sollte das auch locker schaffen, denke ich werde mir hier noch ein upgrade bauen.
Genau, ich habe den H14, MDF von AS Luftfilter: HEPA Filter/ Schwebstofffilter - Güteklasse H14 - 305 x 610 x 78mm - MDF Rahmen
Nenngröße: 305 x 610 x 78 mm
Filterklasse: H14 HEPA Filter nach EN 1822
Abscheidegrad nach EN 1822: >99,995%
Nennvolumenstrom: 280 m³/h
Anfangs-Druckdifferenz: 150 Pa
If you want to build one for even less money, see my vid "Build Your Own Laminar Flow Hood for less than $100 (really WORKS!)". Hundreds of people have built these already and I've received nothing but positive feedback, not a single complaint. I show in the vid laser particle counts, flame test, how to tune and use, how to adjust the flow, do a 5 minutes empty plate test, and a complete spores to harvest grow to demonstrate that it works.
☝️THIS RIGHT HERE💯☝️
I don't usually comment on these videos, but when I seen your name and read your comment I just had to. I want to thank you personally mostly because of your video on the Laminar Flow box. I've built it and it's amazing the difference in contaminants rates even compared to using a SAB. It was soo easy and affordable. You then explained everything in detail. Even what Laminar Flow really means and how to make it, test it, and even backed it all up with crazy testing results on agar. You already know all this. LOL. I just want you to know how important you and people like yourself are to a quiet but ever growing mushroom community. Keep it up cause we need U!
They only deliver to germany sadly.
I like your content and I wanted to offer some constructive feedback and also provide engagement to benefit your video for the algorithm as I think it's a decent video. I found this a little hard to follow, I think freshcap does it better, (but more american orientated) and it's still not perfect but at least he sticks to a single filter and a single fan for explaining how it works. Just stick to a single example throughout and then maybe do some examples at the end, instead of having a physical example and then using different fans and filter values for your explanation throughout the video as it's easier for watcher to reference what you're talking about, walk through it themselves to see if they get the same conclusions as in the video so they know if they get it or just think they get it. 2:27 is what I'm referring to, you talk about a filter with initial resistance of 220, then talk about a random fan different to the fan you have which you clearly showed the specs for but not for this new example fan, and then you talk about a filter with initial resistance of 250, and this all occurs within 16seconds. I liked the presentation otherwise and that fan has a nice aesthetic to it. [Boomer Shroomer's video on this is also great]
That fan doesn't look cheap... lol