Thanks for the reply! I also work in a hospital setting and familiar with air dryers. We have a couple refrigerated for building automation as well as a regenerative desiccant system which brings dew point down to about -50 deg F for medical compressed air. I also have many years in HVAC specifically so I have some other understandings of pressure/temperature…
I’ve read as just general information that a dew point of +50 deg F is adequate for nearly all general usage. That’s that’s a water vapor content of only 1.1%. Using a refrigerated dryer would reduce the dew point to approximately +38 deg F but would only reduce the vapor content to .8%… so not really a substantial advantage in operating a refrigerated dryer if it really isn’t gonna make any difference in operation of the plasma cutter.
I’ve seen people build these elaborate systems from copper that consume half of their garage wall to dissipate heat and condenser out whatever moisture they can and that seems to be quite effective! I just don’t want to do that. So the hvac guy in me thought I could accomplish the same thing just by creating a reduction in air pressure such as refrigerant does in an air conditioning system when it exits the metering device on its way into the evaporator coil. Sure as heck I found a company that makes what I was envisioning. JT Air Options Inc. So there’s no desiccant and it’s not refrigerated… no electricity.
So with this device I should be able to reach a +50 deg F dew point (1.1% vapor content) quite easily! But I just haven’t specifically seen anyone say what dew point is recommended for plasma cutting. I just read “low”… but never know how low… low actually is.
I ordered this system from JT air solutions and thought if I wanted to try and bring the dew point even lower… such as from the 1.1% to something lower I would just get a smaller desiccant system set up near my plasma table. Only if I have reason to add it though.
So any info to clarify this would be great!