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Forum topic by todd4390 posted 01-25-2015 07:39 PM 1010 views 0 times favorited 12 replies Add to Favorites Watch
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todd4390

130 posts in 932 days


01-25-2015 07:39 PM

Got tired of tripping over 4” hoses laying all over my shop floor so decided to run a short run of pvc pipe to locate the hoses closer to tools and keep most of the piping and hose on this one wall. The high horizontal run is approximately 10’ and each drop is approx 3’ with probably an additional 3’ or so of flex hose that will go from the ends of pvc to the tool with the exception of tablesaw which is probably about 7-8’ of flex hose. I’m wondering before I go any further if you all think the system as piped with fitting transitions and flex hoses will suck, pun intended? The DC I have is the Jet Vortex 1100.


12 replies so far

View DIYaholic's profile

DIYaholic

19179 posts in 2140 days


#1 posted 01-25-2015 08:04 PM

The PVC runs look good from here….
You used 2 – 45s as opposed to a single 90.

The only change that I would consider implementing, since it is the “vortex” with the “baffle”....
I would re-orientate the impeller/motor to be inline with the collection ring.
That would eliminate the flex hose & shorten the distance.
Kinda like this…. (you obviously don’t need the Thien Top Hat)

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View Fred Hargis's profile

Fred Hargis

3942 posts in 1958 days


#2 posted 01-25-2015 08:38 PM

You’re on a roll, good job!

-- Our village hasn't lost it's idiot, he was elected to congress.

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Holbs

1377 posts in 1494 days


#3 posted 01-25-2015 08:50 PM

looking mighty perty!
I used 26gauge HVAC 6” ducting for mine. I always wonder why folks feel inclined to run their ducting all the way to the ceiling when no windows or doors are in the path just to come back down for branches. Mine runs 4’ off the ground level to my Thien Baffle & DC. The added length of going up and down, at least in my situation, would of been a waste of material and efficiency.

-- Yes, my profile picture is of a Carpenter Bee! The name is derived from the Ancient Greek "wood-cutter"

View crank49's profile

crank49

3981 posts in 2435 days


#4 posted 01-25-2015 08:50 PM



I would re-orientate the impeller/motor to be inline with the collection ring.
That would eliminate the flex hose & shorten the distance.
Kinda like this…. (you obviously don t need the Thien Top Hat)

- DIYaholic

DIY, don’t you have the Thein and the impeller spinning in opposite directions.
Looking down from the top the Theiin would spin the air in a clockwise direction while the motor and impeller would be spinning counter clockwise. That’s costing you some static pressure if that’s the case.

-- Michael: Hillary has a long list of accomplishments, though most DAs would refer to them as felonies.

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DIYaholic

19179 posts in 2140 days


#5 posted 01-25-2015 09:05 PM

Crank49,
You are correct…
I had seen this arrangement done elsewhere & wasn’t aware of the static pressure loss.
That is a new one for me, but it does make sense.
How much “efficiency” do you think this is costing???
I really needed this orientation, due to the shop layout.Thanks, for pointing that out.

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View Case101's profile

Case101

107 posts in 1257 days


#6 posted 01-25-2015 09:39 PM

You could also pick up pipe and pipe it directly instead of the flex hose.

-- John, New Jersey

View crank49's profile

crank49

3981 posts in 2435 days


#7 posted 01-25-2015 10:42 PM



How much “efficiency” do you think this is costing???
I really needed this orientation, due to the shop layout.Thanks, for pointing that out.

- DIYaholic


Due to the small size of the connector between the fan and the Thein I guess it’s not huge, but probably offsets the gain from having the fan outlet going straight into the filter.

If you had straightening vanes in the fan inlet you might be able to cancel the backwards spin.

-- Michael: Hillary has a long list of accomplishments, though most DAs would refer to them as felonies.

View todd4390's profile

todd4390

130 posts in 932 days


#8 posted 01-26-2015 11:08 AM

Thanks guys. Forging forward

View jsuede's profile

jsuede

69 posts in 688 days


#9 posted 01-26-2015 03:01 PM

FWIW page 4 shows efficiency losses in flexible HVAC duct. When I was calculating how poorly installed my HVAC system was I found a more detailed table showing all sizes of rigid and flex including various states of extension, I can’t seem to find it now but this gives you an incling of why non flexible is best where possible. I still think it looks like you have a great system design.

https://www.energyvortex.com/files/Airflow_is_Critical.pdf

View tomsteve's profile

tomsteve

394 posts in 684 days


#10 posted 01-26-2015 05:47 PM

Might want to think about Is grounding the PVC. Moving sawdust against plastic builds up static electricity that can possibly cause a fire.

Other than that looks good.

View vXhanz's profile

vXhanz

11 posts in 687 days


#11 posted 01-27-2015 08:53 AM



Might want to think about Is grounding the PVC. Moving sawdust against plastic builds up static electricity that can possibly cause a fire.

Other than that looks good.

- tomsteve

Do you have an actual scientific reference for this?

OP: I like what you’ve done, looks good. I don’t know why you went so high with the pipes, but if it works for you, that’s all that matters.

V

View todd4390's profile

todd4390

130 posts in 932 days


#12 posted 01-27-2015 10:47 AM

I went high because I have a smallish shop and wanted to preserve as much wall space as possible for storage

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