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Bob
I installed a half ass air dryer on the intake side of my air compressor. I fastened an old car radiator to the inside back wall of my garage fridge. I ran a 1" hose through the wall of the fridge from the top radiator outlet to the air compressor intake. On the outside of the fridge I fastened an air filter that connects to the lower outlet on the radiator. A coffee can sits under the radiator petcock to collect the water that condenses on the inside of the radiator. My idea was to get the moisture before it got to the air compressor. Judging by the amount of water this rig collects, it must be helping. I do not have near as much water in my water trap as I used to. The only downside to this is after I have done a days worth of sandblasting MB parts, my Guinness has been warmed up by the radiator. Your idea would also work by installing the pressurized copper coil inside a garage fridge.
---- you wrote:
> Hi,
>
> A little while back, I bought a sandblasting cabinet
> In short, I had "wet" air. The tank, and air, heats up and when there is
> this abrupt pressure reduction as it leaves the nozzle, the temperature
> rapidly decreases as well, releasing lots of water inside the cabinet and
> directly onto my parts.
> dizziness, I realized that if I cooled the air a bit BEFORE it got to the
> nozzle and put another water separator very close to the blaster nozzle, I
> might stop much of the moisture from getting on my precious GPW bits and
> pieces and mixing with the media and just wasting my time, energy and
> PATIENCE.
> I thought, I'll bet a nice length of copper tubing, readily available at
> your local hardware store, in 1/4" in about a 25 ft length would not only
> hold the pressure, but provide a nice heat transfer surface. This stuff come
> in coils for about $12.00 and I didn't even unwind mine. For about $4.00, I
> found compression fittings that would seal the hose and supply me with
> conveniently sized threaded outlets to attach air hoses too. Fill up a
> bucket with cold water and put my slightly stretched out coil in it and
> PRESTO! a functional if not particularly elegant air dryer. I hooked my
> water separator after the coil and boy does it ever fill up with water fast.
> Now I can get alot more production from my cabinet and it didn't cost me
> more than $20.00.
I am just a guy trying to do the most
> with the least amount of money possible.
> so this half-assed set up appears to be more than adequate for my needs
> Regards,
>
> Bob Kelly
> '42 GPW
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This archive was generated by hypermail 2b29 : Thu Mar 02 2000 - 22:30:23 PST