• The refrigeration air dryer low pressure cools the incoming compressed air first in an air­to­air heat exchanger where the outgoing cool dry air pre cools the hot incoming air and condenses some moisture out.

• Then the incoming air enters an air to refrigeration air dryer low pressure where the air is cooled to 38⁰F by the liquid refrigerant.

• This process causes the moisture to condense into liquid water and it is drained away.

• The outgoing air then enters the air­to­air refrigeration air dryer low pressure and is warmed up to keep the outside of the pipes from sweating.