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258Vista wrote:

Does anyone have any experience using one of these 12V portable
AC
units on a boat. They look like a good option, but I was curious
if
anyone had any feedback on how they cool and how much ice they
use.
The website says 20lbs an hour which is a lot, wondering if
anyone
has
used this before. http://www.swampy.net/ac12.html

I'm wondering why the ice chest? Just to pump hot air in and suck
cold
out, might as well use a cardboard box.


You're not really that dumb, are you?

What difference would it make? The function of an ice chest is to
insulate. If you are pumping hot air into it, why would you need to
insulate it?

This unit works by pumping cold *water* through a heat exchanger, not
air
across ice.


If you think different, show me the science.

The science is basic- heat always moves to cold.
The cooler is insulating the ice from absorbing heat from whatever it
is
resting on, thus saving the ice for where it can be used more
efficiently-
in the heat exchanger.

Horse****!!! The science is cold is simply lack of heat. You are
blowing the same exact air across the ice that the ice would be
exposed
to. If you are pumping 90 degree air into that cooler, what difference
would it make whether or not the container was insulated??? Try it.
Take a given amount of ice and put in a ice chest. Place another in a
cardboard box. Blow the same exact amount of air into each, with the
same exact equipment, and the same exact exhaust. Measure the
temperature of the exhaust. Guess what? They'll be the same.

You really are that dumb.


\Well, damn! Tell me HOW in the hell insulation would help if you are
pumping the exact same are that you are trying to insulate FROM right
into the cooler!!??? Again, see my last two sentences above. Try it.
Everything exactly the same except for the container. And again, if you
are pumping the same exact air into the chest that you are trying to
insulate from, just what IS the insulation doing? Take this for
instance. Take a piece of isopolycyanurate insulation outdoors. Take
the temperature on one side of the piece. Take the temperature on the
other side of the piece. Huh? They are the same? Imagine THAT! That is
exactly the scenario you'll see with the ice chest. You are pumping air
into it that is exactly the same temperature as that that you are
trying to insulate against. Dumb indeed!


"isopolycyanurate"? Let me help you with that big word...

Polyisocyanurate. It's sold at your local Home Depot under a variety of
brand names. IIRC, the R-value is 7.2 per inch - one of the best for
home sheathing.

--
Uh, it's not a word, it's a combination of abbreviations, thus doesn't
make a hoot which order. I've seen many, many documents with the
abbreviations in both orders.
But, hey, you've followed me to another thread!!!!

If you check, you'll find cyanurate is a "real word".

If not a word, what is the correct grammatical term for polyisocyanurate
besides a collection of abbreviations?

Come on now, were waiting for a cite.

If you've read many, many documents with the "abbreviations" in both orders
how come at least one does not come up with a Google search of
"isopolycyanurate"? Google doesn't even offer an alternate spelling and I
believe Google is much more intelligent than you are.

Some folks here were giving you credit for being 12 years old. I believe
that is very generous.