Hey gents I’ve got a situation that I could use some advice on and I know someone out there has the answer!
My issue is that the area my evaporator works in is regulated by a health agency and any dripping water is a big no-no and currently I have too much condensation occurring and the fans are blowing water droplets right off the coil.
Fan speed cannot be adjusted.
Additional drip pans are not an option.
Industrial application (ammonia)
Previous settings:
Box Temp goal: 34°F
Realistic Box Temp: 38°F (80% RH)
Suction pressure: 33 psi (20°F)
Liquid feed pressure: 60 psi (recirculated liquid from 30 psi vessel)
Coil size: 15 tons~
Superheat off coil: 0°F
Evap TD: 18°F
So given all this, I strongly believe the large evap TD is causing my excessive condensation.
I’ve raised the pressure to 40 psi (26°F SAT) on the suction regulating valve, bringing the evap TD to 12°F instead.
Temperature to stay below 40° in the room is critical so I’m wary of reducing the TD anymore.
Is this realistically the best option available?
Would closing off the metering device and causing more superheat be helpful here? (Superheat normally isn’t necessarily an issue because it has an overfeed vessel).
Some input from the industrial gurus would be appreciated, thanks!
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