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  • EF2000is Portable Generator Sound Deadening Enclosure Box

    Though 20+ air changes per minute sound like a lot it appears not enough for sustained, moderate-high load generator use. Modding design - see UPDATE 6/2017.

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    • EF2000is Portable Generator Sound Deadening Enclosure Box
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  • EF2000is Portable Generator Sound Deadening Enclosure Box

    Oops, my estimated box air turnover calcs were for an *empty* box. But there's a 2+ cu ft generator in it, so maybe > 24 air exchanges per min... Lower CFM fans than what I used would probably work as well.

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  • EF2000is Portable Generator Sound Deadening Enclosure Box

    Like inferred in the instructable, I've run for the gen in box for about 3->4 hrs under load and measured/compared temps by hand & with infrared thermometer & I recall them being "fine". IIRC gen was actually cooler running in this box vs running out in the sun but don't have specific measurements right now.Next time I'm using it I'd do the better thing - use a thermometer that keeps high/low temps with remote (wired) probe in the box & post more specific info.BUT I calculate the box volume at about 5 cu ft and so the 120 cu ft/min pusher & puller fans would mean air turnover of about 24 times per min (in a perfect world)... Seems like a lot to me, much more than any similar passive enclosure relying solely on exhaust to evacuate box.Note dual, matched fa...

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    Like inferred in the instructable, I've run for the gen in box for about 3->4 hrs under load and measured/compared temps by hand & with infrared thermometer & I recall them being "fine". IIRC gen was actually cooler running in this box vs running out in the sun but don't have specific measurements right now.Next time I'm using it I'd do the better thing - use a thermometer that keeps high/low temps with remote (wired) probe in the box & post more specific info.BUT I calculate the box volume at about 5 cu ft and so the 120 cu ft/min pusher & puller fans would mean air turnover of about 24 times per min (in a perfect world)... Seems like a lot to me, much more than any similar passive enclosure relying solely on exhaust to evacuate box.Note dual, matched fans are also used to try to avoid pressure or vacuum in the box (that carburetor may not like). Again its been working great the few times I've had to use it.

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  • cfcubed commented on cfcubed's instructable A Small DIY Home Hydroponics Setup 9 months ago
    A Small DIY Home Hydroponics Setup

    Thanks for your comments / suggestions. Yes, lots of ways to go here, lots of info on various forums WRT lighting, etc. Though it depends on what you're growing (me: non-flowering greens) I learned the more light/lumens the better (to a point I guess). For kicks I'd bought a $13 Docooler light meter to see what my plants were getting, part of the reason for all the bulbs:) And comparing to the sun on a sunny day was interesting too:)My lighting happened to work well lumen & heat-wise as I wanted 10-15 deg F rise anyway. Don't remember why I went white/black sheeting vs cheaper space blanket but the white seems reflective enough. Your curved reflector sounds neat, I've never been one to work with wood hence my bent up metal sheet.Thanks again for tips, others may benefit from ...

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    Thanks for your comments / suggestions. Yes, lots of ways to go here, lots of info on various forums WRT lighting, etc. Though it depends on what you're growing (me: non-flowering greens) I learned the more light/lumens the better (to a point I guess). For kicks I'd bought a $13 Docooler light meter to see what my plants were getting, part of the reason for all the bulbs:) And comparing to the sun on a sunny day was interesting too:)My lighting happened to work well lumen & heat-wise as I wanted 10-15 deg F rise anyway. Don't remember why I went white/black sheeting vs cheaper space blanket but the white seems reflective enough. Your curved reflector sounds neat, I've never been one to work with wood hence my bent up metal sheet.Thanks again for tips, others may benefit from 'em. I've spent enough time & $$$ on this setup as it is, esp. for my category of crops (salad stuff, basil, etc).

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  • cfcubed commented on cfcubed's instructable A Small DIY Home Hydroponics Setup 9 months ago
    A Small DIY Home Hydroponics Setup

    Thanks! A bit about my light hood debacle, started with the two Apollo Horticulture 24W (13W actual) LED Grow Lights and they weren't enough for the 1.5'+ X 2'+ grow area. Then added four 40W flourescents w/Westinghouse 22259 2-Lamp sockets then the four little 13Ws on ends for edge fill.Knowing what I know now would consider 1 or 2 good 45W LED panels (e.g. maybe HIGROW KB-GL45A) or one good 200W-300W one (maybe Roleadro, 125w-175w actual).

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  • cfcubed commented on trebuchet03's instructable Hydroponics - at Home and for Beginners9 months ago
    Hydroponics - at Home and for Beginners

    Nice descriptive, informative instructable. FYI I mentioned this project as one with lots of good information from one I just documented: "A Small DIY Home Hydroponics Setup"

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