... refrigerants(R410a,R407c,R404,R134a,R22,R23,etc),oil,water,water and glycol mixtures. 2,Used in various equipment:hot ... oil),air conditioners,refrigerators,air dryer,water cooler,drinking thoughts,constant temperture refrigerator,heat recollection and circulation,floor heating,indoors ... light weight: only equivalent to the shell and tube heat exchanger of 20-30%, greatly reducing the design of the ...