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PhytoExtractum Shop: Maeng Da Thai Kratom Leaf Powder

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Invisiblenightman
Mushroom Enthusiast

Registered: 03/07/10
Posts: 24
Loc: Western United States
Nightman's 2' x 4' Flowhood Design
    #18341071 - 05/29/13 10:58 PM (10 years, 11 months ago)

After much tribulation and research, I think I've come up with a final design for my horizontal flow hood. I would appreciate any feedback or advice before I begin my build.

Materials:
  • 24" x 48" x 5.25" Astrocel II HEPA Filter
      (H14 Efficiency) ( Initial Resistance .39" WG @ 307 CFM/ 1" WG Final Resistance)

  • (2) 14" x 24" x 1" 3-M Filtrete Max Allergen Reduction Pre-Filters
      (92% Efficiency)

  • Fantech Direct-Drive Blower 1/6 HP, 115V
      (992 CFM @ 0.3" SP)

  • Dayton Variable Speed Controller

  • AC Power Outlet

  • CFL Work Light

  • Acrylic sheeting / plywood

  • Other construction materials (Furring strips, silicone, weather-proofing tape... etc)



This is the design I plan on going with, I drew it on MS Paint :cool:



Something I'm still ambivalent on is the material to house everything in, would you guys recommend using acrylic, plywood, or anything else?


--------------------
“My technique is don’t believe anything. If you believe in something, you are automatically precluded from believing its opposite.”

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Offlinesimonjester44
Old AF
 User Gallery


Registered: 03/22/13
Posts: 94
Loc: EAST COAST
Last seen: 1 year, 2 months
Re: Nightman's 2' x 4' Flowhood Design [Re: nightman]
    #18342070 - 05/30/13 06:34 AM (10 years, 11 months ago)

Looking good.  Plan Plan Plan..measure twice, cut once...the basics.

Pre drill all holes with a countersink bit.

Here are my thoughts:



1)  I'm not sure if that fan will cut it for the size of filter that you're talking about.  Can you post the specs?  I can not recommend enough that you spend an hour calling all the local HVAC companies for surplus blowers.

2) I was under the impression that you needed the same amount of  plenum as is your filter size.  See:

http://www.shroomery.org/forums/showflat.php/Number/17150168

3)  Construction Material:  I hope you dont plan on moving this beast.  I just finished a 2' x 2' and it is too heavy for me to move alone.  I used 3/4 inch oak.  There may be lighter stuff, but I would assume that it will either be expensive and/or inappropriate material.  In hindsight I would have used regular sanded plywood. Whatever you do, it wont be going anywhere until you disassemble it.

4)  Speed control.  Just remember that not all blower motors can be operated with a variable current controller, some require a variable frequency controller.  I like to just unscrew the wire nut for the power and switch between hi-med-low contact wires.  Who needs a switch anyway?

Here is just one such discussion:

http://www.shroomery.org/forums/showflat.php/Number/16761533#16761533



Here is my build:

http://www.shroomery.org/forums/showflat.php/Number/18293945

About half way down there are also links to several other great builds.


--------------------
"Never underestimate the power of friction as a construction adhesive."

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PhytoExtractum Shop: Maeng Da Thai Kratom Leaf Powder


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