Recent content by ned3000

@u3b3rg33k Thanks for the link. I hadn't seen that particular product line in my searches. Definitely something to consider. That unit is big, heavy, and expensive, but the idea of not wasting all the heat in the exhaust air is a big draw. I guess the question is how effectively that system...

The idea of heat recovery is really appealing but from what I've seen it seems that they're mostly designed to gradually replace 'stale' air so the air flow volume is pretty low. With the system that I proposed I should be able to get well over 1000 CFM. Anything approaching that that I've seen...

ChatGPT's number may have been high, but I've looked it up before and the recommended size of passive intake is surprisingly large (even if totally unrestricted). As far as what's being exhausted, yes, paint fumes, welding fumes (not really too worried about that except for maybe zinc coating)...

The exhaust fan is in the wall. No hood or booth or anything at this time.

I'm surprised this comment took so long. Usually when I describe a project I'm planning that's the first response. :lol: There's a couple of problems with passive makeup air: 1.) The size required is huge if there's a significant amount of exhaust airflow. ChatGPT says I would need 8 square ft...

The only systems that I could find that do any kind of heat exchange (other than huge $$$ commercial units) were in the 50-400 CFM range, so if I want > 1000 CFM I think I'm stuck with heating outside air. It seems like the 10kW heater that I linked (this one) would work OK if I kept the CFM...

Yeah, the issue is mostly welding and painting. Probably some other chemical processes moving forward.

@American Locomotive I was a bit concerned with the makeup air heating. As you said, it seems like a lot of power and not quite strong enough. Could you be a little more specific about what you're talking about with the fume hood? I'm kind of clueless about this stuff.

For makeup air, I'm planning on using this fan, and this heater. No cooling. I'm only going to run the system as needed to remove contaminants, so I was planning on just dealing with the heat in the summer. For the filter I was thinking of just using an aluminum "pre-filter" without a pleated...

I was planning to accept that there will be some degree of negative pressure in the garage. It's attached to the house, so my thinking is better for any leakage to go house -> garage rather than the opposite. I looked at those energy recovery units, but I'm looking to move a good amount of air...

I'm partway through setting up a ventilation system for my 700 sq. ft. garage. I have a good exhaust setup (2400 cfm fan) but now I need to deal with providing makeup air for that. I thought I'd post my plan here to see if anyone else who's dealt with this has opinions or insights. I'm...

I've just finished putting down this product on my garage floor. It's a primer/base/urethane topcoat. When I opened the can of the topcoat there appeared to be something clearly wrong. It's a colored topcoat (light blue) but there was a lot of brownish gunk in there that would not blend in with...

That's a good idea w/ the plastic welding. I've done some of that to modify plastic parts cases, but hadn't thought of it for forming dust collection components. Even with my existing shop vac setup it seems like I never have exactly the right adapters to get a good fit for everything (despite...

Awesome info @WilsonLR. Sounds like modifying my 2.5" port tools or adding an additional dust collection point is another interesting option. That should work with a standard low pressure, high CFM sysem; wouldn't need the expensive (and relatively low CFM) Supercell unit. Seems like kind of...

That's a pretty good summary. I've read a lot of the Bill Pentz site, but the info there is so dense and detailed that it's sometimes hard to draw simple conclusions from. I'm leaning toward that Supercell system w/ 4" PVC and metal blast gates at the individual tools. I'm only running one tool...