Posted by Texasmark1 on August 06, 2015 at 18:58:38 from (198.45.234.19):
A few days ago the subject came up. Somebody was asking about cooling their shop that was uninsulated.
Today I tore into my Ford tractor to upgrade my lift cylinder O-ring. It was over 95 in the shop when I started about 10 AM.
I have a 14k BTU AC sitting on what's left of a kitchen chair...back is missing, that I mounted to a piece of plywood making a flat base and added coaster wheels to that a couple of years ago. Rolls around real nice. The AC was in the house and I upgraded that, saved the unit as a spare and put the wheels under it to roll around the shop and get it out of the way. Runs on 120 at 12A.
I closed the doors and windows in the place and stuck the nose in the shop and the tail out the window and ran it for awhile.
Checked temps after it had been on for a few minutes and the outlet of the evaporator was running around 65, shop at 95 and condenser at 125, right on target....30F above and below ambient.
I was doing a fair amount of moving around and even with supplemental fans I couldn't stay in front of the ac. It was basically stuck to the window to get rid of the condenser heated air. It made the day pleasant but this evening, I was thinking.
Rather than using portable fans to cool you down wherever you are working, why not roll the ac around and use it. Since it's mobile you can put it where you want and enjoy some cool air, not just stir up hot air.
On the condenser output, leave the windows and doors open and let the hot air out, usually a S. breeze blowing, and if it started building up, take one of the fans you were using and blow the condenser discharge air out of the shop.
The thing runs on 120 at 12 A. I pay just under 12c a kWhr. for juice. I was in the shop about 5 hours today.....120x12 = 1.44 kw x 5 hrs is 7.2 kWhrs x 12c/kWhr = about 80 cents.
Heck I couldn't have bought a soda pop for that. I think I'm going to do that.
If you have an old ac sitting around you might try it too......
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