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Amazon Shop for: Agar, HEPA Filter, Laminar Flow Hood, Petri Dish

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Offlineonetime
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floow hood?
    #3610584 - 01/11/05 01:20 AM (11 years, 10 months ago)

if i had a 1100cfm filter how meny cfm blower do i need?

and how much hp is good is this one any good?

http://cgi.ebay.com/ws/eBayISAPI.dll?Vie...me=STRK:MEWA:IT


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Invisibleagar
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Re: floow hood? [Re: onetime]
    #3611163 - 01/11/05 03:31 AM (11 years, 10 months ago)

That blower is 230 volts :eek:, not 110. It is way more than you need. Read the static pressure CFM rating on your filter. That should tell you what CFM fan you want.

Call around to a few furnace/air con repair places. Most will sell you a good used furnace fan & motor combo out of a defunct furnace - for under $25. Some will even give them to you FREE, if you take it out of some old trade in - they throw away - anyway.

Then buy a rheostat, so you can adjust the fan speed to suit your filter.

All you need is for it to do this:

Not blow petri dish's out of the work area.


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Invisibleohmatic
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Re: floow hood? [Re: agar]
    #3611258 - 01/11/05 04:03 AM (11 years, 10 months ago)

Quote:

agar said:
Not blow petri dish's out of the work area.




lool :laugh:
peace ohm :mushroom2:


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:penis: MONOTUB tek :sun: HEATBOMB tek :penis:

RIP #cultivation! ....can't associate? well FUCK U !


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Offlineonetime
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Re: floow hood? [Re: ohmatic]
    #3611712 - 01/11/05 10:02 AM (11 years, 10 months ago)

yeah but its still only 1200cfm witch is 100cfm than my filter do i want to match the cfm with my filter excactly? i dont think there is funance repair shops here i never seen one its hard enough to find a hard ware store i sometimes sucks to live in a big city


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Offlinepshawny
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Re: floow hood? [Re: onetime]
    #3611746 - 01/11/05 10:17 AM (11 years, 10 months ago)

http://www.shroomery.org/index/par/23404
This might help, kinda confusing to me though.


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Re: floow hood? [Re: pshawny]
    #3611795 - 01/11/05 10:35 AM (11 years, 10 months ago)

yeah i was looking at that over at the nook and it is still confuseing some one i know has the same filter and over at the nook i seen the same filter used the guy i talked to with it has a 120v 1800cfm 3/4hp blower and he says it works fine


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Re: floow hood? [Re: onetime]
    #3611822 - 01/11/05 10:48 AM (11 years, 10 months ago)

So for this filter should one purchase a 1800 cfm or so blower?


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Re: floow hood? [Re: pshawny]
    #3611853 - 01/11/05 10:59 AM (11 years, 10 months ago)

i wonder if this one is good enough for mine http://cgi.ebay.com/ws/eBayISAPI.dll?Vie...me=STRK:MEWA:IT


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See?
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Depression, Misspells , wanting everying thing i cant have haveing nothing i want


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Invisibleagar
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Re: floow hood? [Re: onetime]
    #3612055 - 01/11/05 12:15 PM (11 years, 10 months ago)

That fan states no cfm rating? 1/25th HP seems small. All that crap confused me also.

CFM - Air Volume in cubic feet per minute.

FPM - Velocity of Air in feet per minute.

SP - Static Pressure. This is expressed in inches water gauge. It is resistance to air at rest in a duct, and is also commonly called "resistance", "friction", "friction loss", or "pressure loss."

VP - Velocity Pressure: expressed in inches water gauge. It is kinetic pressure in the direction of flow necessary to cause air at rest to flow at a given velocity.

Here is a rule of thumb: 1200 cfm rated filter needs a fan in that 1200 cfm area. A very little less is okay, so is a lot more.

IMHO.... MORE is far better to error on the safe side. Because you can always throttle it DOWN with a rheostat type dial switch.

If the max output of the fan is to small, you CANNOT throttle it beyond max capacity & are SOL (& will have to find another more powerfull fan).

The static pressure a 99.97 hepa filter creates will SURPRISE you. Fan by itself blows like a mofo. Encase it & put filter in front of it (which creates the resistance = static pressure) & the output out of the hepa is much less that the fan running without any resistance.

CFM - Air Volume in cubic feet per minute.

FPM - Velocity of Air in feet per minute.

You want to create laminar flow of minimum 100 FPM out of the filter.

Again.... call around to AC & furnace repair places & see if they will sell or give you a squrrel cage fan & motor out of a trade in - or junk house furnace.

No matter the city where you live, there are many many houses around. Each needs its own heating system. Those furnaces require maintance, repair & sometimes replacement.

There are MANY MANY air con & furnace repair places in every city. Just look in the PHONE BOOK & give a few a call.

Tell them some BS why you need a inexpensive fan (vent garage, vent basement, vent kitchen, vent dog house, etc, etc).

When I built my first flowhood, on the 3rd call - I found a place that said - "sure - we have few - but they are still in the furnaces we took out & replaced with new. Come on down & you can have one for free, but you have to take it out".

I went (small tool box in hand) & they had 4 old house type furnaces. I thought "what the hell" & took the fan/motors out of all four. All worked fine & any one of them was rated bigger than I needed (built to blow hot air through all the heat vents in a house -after all).

I just used the one that I thought best (newest & biggest) & installed it. Once everything was sealed & it was turned on, it shocked the hell out of me, how much static pressure the hepa filter created.

It didnt seem like much air was coming out of the filter. To test it, I used a candle. I was surprised to find it blew the candle out. Which made me realize - I had more than enough (in reality - to much). So, I installed a rheostat control & bingo bango, tuned the puppy right in & made a mark on the switch - what setting was PERFECT.

Again... this candle demonstrates laminar flow in the OPTIMAL RANGE (anywhere inside work area).

OFF


ON


Hope this helps :wink:


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Edited by agar (01/11/05 12:50 PM)


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Offlinepshawny
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Re: floow hood? [Re: agar]
    #3612074 - 01/11/05 12:24 PM (11 years, 10 months ago)

:thumbup:  Thanks agar!  It makes more sense now.


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Re: floow hood? [Re: agar]
    #3612136 - 01/11/05 12:44 PM (11 years, 10 months ago)

One more thing................. :rolleyes:

A LAMINAR FLOW HOOD IS WONDERFULL......... :grin:

But, don't think for a minute, it is MAGIC, or WORKS MAGIC.

You still have to use STERILE PROCEDURES.

1. TURN OFF or plug furnace vents in room where it is.

2. Clean & vacuum the room.

3. I keep a thin piece of formica panel over the prefiter intake - when NOT in use (so dust & possible contams don't settle on it).

4. Each time you use it, PURGE IT. Start fan, spray a few wisps of lysol on the PREFILTER & let it suck & nblow 15 minutes.

5. After filters are purged, spray lysol all over work area & wipe down with clean lysol or alc soaked paper towel. Fan will evap that in a minute or 2.

6. Use acl or lysol soak paper towels to wipe down ANYTHING you put in, or use in the flowhood working area.

7. Wear clean clothes, hair cover, surgical mask & swabbed gloves when using.

8. You CANNOT in the middle of any procedure, STOP, have a smoke, go to kitchen, make a sandwich, drink a beer, scratch you ass, take a dump.....wipe your ass.....flush toilet...... then go back to middle of procedure - like you NEVER LEFT.

Sure, you can take a break. But.. close everything in work area first. Go do whatever & leave flowhood running. When you come back, clean yourself back to when you started. Then procede. This will minimize contams - you - yourself - bring into the flowhood work area.


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Amazon Shop for: Agar, HEPA Filter, Laminar Flow Hood, Petri Dish

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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