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Posted by Proctologically Violated©® on April 21, 2006, 10:22 am
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Awl--
After much thermodynamic agonizing and wasted BTUs, and a little help on
alt.hvac, alt.home.repair, "mini-splits" or ductless A/C's seem to be the
way to go. Klimaire in FL makes a charged 24,000 btu unit for $799 + $160
s&h. Oh yeah, it's also a heat pump!
You need a techie to vacuum/connect it, but I'm told if you (me) do all the
mechanical setup, this can be a relatively nominal, uh, charge.
PC Richards et al don't seem to supply these type units.
Any other leads/sources/experiences? Any tips?
--
Mr. P.V.'d
formerly Droll Troll
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Posted by Dave Lyon on April 21, 2006, 10:40 am
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While we're on the subject...
My shop is a 4000 square foot metal building with just a little insulation.
I've got 2 residential air conditioning units that keeps it bearable, but
not comfortable in our Missouri summers. I've heard that our humidity is too
high to use an evaporitve cooler in this area effectively, but I've always
wondered how one of those would do in a shop that has two central air units
running non stop. Would it actually add any cooling? Would it cause my
equipment to rust? It would sure be cheaper to operate than a 3rd AC unit.
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Posted by Proctologically Violated©® on April 21, 2006, 10:52 am
Please log in for more thread options Don't know about evaporative cooling. Would that be *inside* the shop, or a
water tower-type deal outside the shop?
Direct sun on roofs is a killer, and likely much worserer in a metal
building.
I think I've heard of insulating paints, that might help.
But *any* kind of air gap would help enormously to reduce the load. If you
have a flat roof, any kind of skin or sheathing a few inches off the top (a
foot or so would be better) would help. I scattered milk crates over an
exposed flat tar roof. Helped!!
An air gap *inside* the building, w/ exhaust forced air, would help also. A
hung ceiling would do very well. Could cut your A/C costs proly in half.
Also reduces the volume requiring A/C/heat.
If you hung a ceiling, in the winter/cold you could direct that hotter air
back into the shop space.
--
Mr. P.V.'d
formerly Droll Troll
>
> While we're on the subject...
>
>
> My shop is a 4000 square foot metal building with just a little
> insulation.
> I've got 2 residential air conditioning units that keeps it bearable, but
> not comfortable in our Missouri summers. I've heard that our humidity is
> too
> high to use an evaporitve cooler in this area effectively, but I've always
> wondered how one of those would do in a shop that has two central air
> units
> running non stop. Would it actually add any cooling? Would it cause my
> equipment to rust? It would sure be cheaper to operate than a 3rd AC unit.
>
>
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Posted by Ecnerwal on April 21, 2006, 11:13 am
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> My shop is a 4000 square foot metal building with just a little insulation.
> I've got 2 residential air conditioning units that keeps it bearable, but
...
> It would sure be cheaper to operate than a 3rd AC unit.
Have you considered that more insulation would cost _nothing_ to run,
and enough of it could even get you down to running one A/C unit?
--
Cats, coffee, chocolate...vices to live by
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Posted by Dave Lyon on April 21, 2006, 11:26 am
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> Have you considered that more insulation would cost _nothing_ to run,
> and enough of it could even get you down to running one A/C unit?
>
> --
> Cats, coffee, chocolate...vices to live by
Ya, but I'm not sure what kind of insulation would hold up to a full time
machine shop. The insulation that is there, is a 4' wide roll with a green
sort of plastic facing the inside of the shop. The plastic is starting to
get holes and stuff in it from the years of abuse.
I've seen shops where they have sprayed insulation on the inside of the
walls. After a year or two, the walls are black with carbon dust and chips
that can't be effectively cleaned.
I'm just looking for a quick and easy solution, cause in the next few years
I'll probably be building a larger shop at a different location. Or, selling
the whole business and starting a different one.
Anybody looking for a small owner financed machine shop with a reasonable
customer base? :)
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> While we're on the subject...
>
>
> My shop is a 4000 square foot metal building with just a little
> insulation.
> I've got 2 residential air conditioning units that keeps it bearable, but
> not comfortable in our Missouri summers. I've heard that our humidity is
> too
> high to use an evaporitve cooler in this area effectively, but I've always
> wondered how one of those would do in a shop that has two central air
> units
> running non stop. Would it actually add any cooling? Would it cause my
> equipment to rust? It would sure be cheaper to operate than a 3rd AC unit.
>
>