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Leaving freezer on /open | 26 comments (26 topical, editorial)

Re: Leaving freezer on /open (3.00 / 0) (#21)
by elvin1949 (elvin1949@yahoo.com) on Thu Jun 12th, 2008 at 12:27:58 PM MST
(User Info)

JW1111
After more reading and a small amount of thinking.
I think i have the fix for your problem.
You already have what i suggested,so here goes.
First add about 4 more inches insulation to the walls.Second add about 6 more inches of insulation to the ceiling.
Now for the good part find an OLD upright freezer.
They last forever [new=junk}take it apart.Put the compressor and condenser outside out of the weather and in the shade.Run your lines through the wall
and use the evaporator and thermostat from a window A/C.Use a low volt fan {system volt} in the cellar.
{trying to keep system heat outside}Put a small battery bank outside next to the compressor for your dump load from main system and for power for
wine cooler.Wire it so nothing can run unless your main system is dumping.PUT A MANUAL OVER RIDE FOR
EMERGENCIES.
If you live close enough to west-central Louisiana i have a Philco-Ford 10cuft freezer you can have for free.Door gasket and thermostat bad but you won't need those anyway.

later
Elvin PS Most folk's will say i'm crazy [I-AM}
When you recharge the system propane is
a lot colder than 134a.

[ Parent ]

Re: Leaving freezer on /open (3.00 / 0) (#22)
by JW on Thu Jun 12th, 2008 at 02:09:04 PM MST
(User Info)

Elvin, I remember the R-12 phase-out. Its known that propane can be interchanged in an r12 system. I have done it myself and it does work. Actually I used a mix of 25% isobutane and 75% propane.

I also found it was slightly more efficient, however I observed this thru reduced compressor loading. A pully size change would have matched temperature as good as r12 im sure. I only charged auto a/c systems.

As one may use propane based refrigerant, there is a decreased chance of the 'freon' based corrosives, which the dryer normally provides protections for when using r12. Also I saw a couple of refridgerators charged with the propane mix, the oil viscosity had to be reduced to accomodate the alternative freon. but all the systems I observed worked ok for a pretty long time(over 3 years)

But im pretty sure propane based freon is not allowed, because of the possibilite of a leak developing in such a system charged with that. But it does infact work, interesting that you know that.

I have never tried this with a system charged with 134a.

JW

[ Parent ]

Re: Leaving freezer on /open (3.00 / 0) (#23)
by elvin1949 (elvin1949@yahoo.com) on Thu Jun 12th, 2008 at 10:10:55 PM MST
(User Info)

JW
The old upright freezer has r12.
So when remaking it into a walkin it has to be converted to something.
134a is easy to get and propane works better than the 134a and is easier to get.
JW don't give your age away but when is the last time you saw a Philco-Ford deep freeze.
later
Elvin

[ Parent ]

Re: Leaving freezer on /open (3.00 / 0) (#24)
by JW1111 on Fri Jun 13th, 2008 at 04:20:07 PM MST
(User Info)

"Wire it so nothing can run unless your main system is dumping" My problem here is that I have to invert, and the inverter will not run off a Xantrex charge controller, the inverter will not reset. And the lvd of the inverter is too low, 22.5v, with no way to adjust. So i have to manually turn it on and off. Which I do during peak power.

[ Parent ]

Leaving freezer on /open | 26 comments (26 topical, 0 editorial)

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