moisture separator
moisture separator
(OP)
how do you know that a moisture separator is undersized?
our problem is that when two air compressors are running, we have liquid water carry over along our pipelines. at this condition, air pressure is varying as opposed to a stable pressure when only 1 compressor is running. does this mean that a moisture separator works well only under stable pressure conditions?
lastly, the only way we cool our air is thru a heat exchanger with water as the cooling medium. the exit temperature of air is way below the dew point of air at 3 barg (our compressor discharge). does this mean that all of the water will condense?
thanks
our problem is that when two air compressors are running, we have liquid water carry over along our pipelines. at this condition, air pressure is varying as opposed to a stable pressure when only 1 compressor is running. does this mean that a moisture separator works well only under stable pressure conditions?
lastly, the only way we cool our air is thru a heat exchanger with water as the cooling medium. the exit temperature of air is way below the dew point of air at 3 barg (our compressor discharge). does this mean that all of the water will condense?
thanks





RE: moisture separator
I've seen designs before with vac pump discharges going to coolers then atmosphere with no separator and they always have liquid carry over.
RE: moisture separator
RE: moisture separator
ash9144 may be right that because of the increase in velocity (due to 2 compressors running) some of the liquid water did not have the opportunity to be separated in the separator.
dcasto, what do you mean when you say "the 2nd compressor requires more water circulation so the air is cooling some more after the separator"? in our case, the exit temperature of the compressed air after the cooler/condenser is the same when either 1 or 2 compressors are running. both at about 37 deg C. dew point for air at 3 barg is 51 deg C. so this means that almost all of the moisture in the compressed air is condensed.
thanks again and hoping for your early reply.
RE: moisture separator
I'm saying that your water cooling system needs more cooling water with 2 units running than 1.
If you outside air temperature or ground temperature is lower than 37 C, then you WILL condense water downstream of the seperator.
RE: moisture separator
for the water cooling system, the exit temperature of the compressed is 37 deg C for both cases, when 1 and/or 2 compressors are running. i suppose the amount of cooling water is enough. is this correct?
dew point for compressed air (3 barg) is 50+ deg C. is it correct to assume that at 37 deg C, all of water vapor in the air has condensed - meaning that after the heat exchanger, no more water will condense even if the temperature of air goes down?
thanks again.
RE: moisture separator
RE: moisture separator